data/dataset.json

查看原始文件 · 全部源码

唯一需要维护的数据文件：60 张事实卡，对话按集合平级存放（train 500 段、val 50 段、test 50 段）。facts 提供每题可依据的资料，train/val/test 提供示范对话；逐字段说明与使用位置。

第一段对话和它引用的事实

下方只摘取一个完整样例，保留顶层结构；全部数据在折叠区与原文件中。

{
  "facts": [
    {
      "id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "text": "自转使地球表面各处交替朝向和背向太阳，形成主要的昼夜变化。太阳没有按昼夜关闭发光。地球还绕太阳公转；假定取消自转但保留公转，光照位置仍会随公转缓慢变化。",
      "source_url": "https://spaceplace.nasa.gov/seasons/en/",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "昼夜的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    }
  ],
  "train": [
    {
      "id": "day-night-01",
      "group_id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "day-night"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么白天亮、晚上黑？",
          "assistant": "地球在不停转，我们住的地方转向太阳就是白天，转到背光的一面就是晚上。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "太阳晚上关灯睡觉了吧？",
          "assistant": "太阳没有在晚上关灯。是我们所在的地面转到了背向太阳的一侧。还可以接着想：如果地球不转，就没有黑夜了吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    }
  ],
  "val": [
    "…"
  ],
  "test": [
    "…"
  ]
}

展开全部原始记录

{
  "schema_version": 4,
  "description": "小学科学探索伙伴：facts 为参考事实卡；train 500 段训练、val 50 段验证、test 50 段测试；单一可编辑源。",
  "facts": [
    {
      "id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "text": "自转使地球表面各处交替朝向和背向太阳，形成主要的昼夜变化。太阳没有按昼夜关闭发光。地球还绕太阳公转；假定取消自转但保留公转，光照位置仍会随公转缓慢变化。",
      "source_url": "https://spaceplace.nasa.gov/seasons/en/",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "昼夜的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "seasons",
      "category": "space",
      "topic": "四季",
      "text": "地轴相对公转轨道倾斜，造成一年中太阳照射角度和白昼时长的变化。两半球季节相反。日地距离变化不是解释地球四季的主要因素。照射角度模型只能展示部分机制。",
      "source_url": "https://spaceplace.nasa.gov/seasons/en/",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "四季的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "moonlight",
      "category": "space",
      "topic": "月亮的光",
      "text": "月面可见光的主要来源为太阳照射后的反射，区别于太阳内部核聚变供能。地月日位置合适时白天也可见月球。月球表面是粗糙岩质表面，并非平面镜。",
      "source_url": "https://spaceplace.nasa.gov/moon-phases/en/",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "月亮的光的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "moon-phase",
      "category": "space",
      "topic": "月相",
      "text": "太阳通常照亮月球半球；月球公转使日地月几何关系变化，地面观察者看见的受光比例随之改变。月相过程中月球形状不变。地球影子遮月属于月食，不能用来解释通常的月相。",
      "source_url": "https://spaceplace.nasa.gov/moon-phases/en/",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "月相的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "tides",
      "category": "space",
      "topic": "潮汐",
      "text": "太阳与月球的引力在地球不同位置有差异，这种潮汐作用影响海水分布；不能只画朝月球一侧隆起。海岸几何、水深及海水运动使不同地点高潮时间不同。读潮汐表不能替代海岸安全安排。",
      "source_url": "https://oceanservice.noaa.gov/education/tutorial_tides/tides02_cause.html",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "潮汐的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "orbit",
      "category": "space",
      "topic": "绕地运动",
      "text": "近地轨道存在显著重力。引力与物体横向速度共同决定轨迹；合适条件下物体持续绕地自由落体。空间站和站内宇航员共同下落而产生失重体验，不能据此推论太空无重力。",
      "source_url": "https://spaceplace.nasa.gov/what-is-gravity/en/",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "绕地运动的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "stars",
      "category": "space",
      "topic": "星星眨眼",
      "text": "大气中不均匀且变化的折射条件导致恒星视亮度和位置闪烁。恒星视面很小，效应较显著；行星通常闪烁较弱。离开大气会去掉这一来源的闪烁；恒星自身亮度变化属另一机制。",
      "source_url": "https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question26.html",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "星星眨眼的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "sun",
      "category": "space",
      "topic": "太阳的能量",
      "text": "太阳中心的核聚变将氢转化为氦并释放能量。这是核反应而非煤炭等化学燃烧。恒星会随内部燃料和结构变化而演化，太阳也有演化历程，不能描述为无限燃料。",
      "source_url": "https://science.nasa.gov/sun/facts/",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "太阳的能量的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "meteor",
      "category": "space",
      "topic": "流星",
      "text": "流星体进入大气形成发光现象，称流星；幸存落地的物质称陨石。流星现象通常不涉及恒星本体坠落。颜色、外形或许愿不能分别作为可靠的陨石鉴定证据或改变流星运动的机制。",
      "source_url": "https://spaceplace.nasa.gov/asteroid-or-meteor/en/",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "流星的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "comet",
      "category": "space",
      "topic": "彗星",
      "text": "彗星含冰和尘埃；靠近太阳加热可释放气体并带出尘埃。离子尾受太阳风作用，尘埃尾受太阳辐射压力作用，方向总体受太阳支配，不必背向运动方向。远日时可无显著彗尾。",
      "source_url": "https://spaceplace.nasa.gov/comets/en/",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "彗星的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "galaxy",
      "category": "space",
      "topic": "星系",
      "text": "银河系是一个由引力联系的恒星、气体、尘埃及暗物质系统，包含太阳系。太阳系由太阳及其引力联系的天体构成，属于不同大小层级。宇宙存在银河系以外的其他星系。",
      "source_url": "https://spaceplace.nasa.gov/galaxy/en/",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "星系的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "exoplanet",
      "category": "space",
      "topic": "系外行星",
      "text": "系外行星位于太阳系之外。凌星方法利用行星遮挡恒星时的亮度下降等信号，需排除其他干扰；径向速度等也可探测行星。处在适居带不等于存在生命，也不足以确认整个环境适居。",
      "source_url": "https://spaceplace.nasa.gov/all-about-exoplanets/en/",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "系外行星的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "water-cycle",
      "category": "earth",
      "topic": "水循环",
      "text": "水可经蒸发、降水、径流、下渗等途径在环境中迁移，土壤水、地下水、冰雪等能储水。不同行程和储存位置对应不同停留时间，水滴没有统一的循环路线或时刻表。",
      "source_url": "https://www.usgs.gov/faqs/what-earths-water-cycle",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "水循环的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "cloud-rain",
      "category": "earth",
      "topic": "云与雨",
      "text": "可见云由微小液滴和冰晶组成，气态水通常不可见。云中粒子通过碰并或冰晶生长等增大，满足条件时形成降水。仅有云不能推出一定下雨；有些降水也未到地面。",
      "source_url": "https://www.usgs.gov/water-science-school/science/condensation-and-water-cycle",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "云与雨的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "snow",
      "category": "earth",
      "topic": "雪花",
      "text": "冰晶分子排列具有六重对称基础。雪晶生长受温度与湿度历程影响，外形可以多样。聚合、破损与部分融化会产生不规则外观，因此六角外观不是每团天然雪都能清楚显示的特征。",
      "source_url": "https://www.noaa.gov/stories/how-do-snowflakes-form-science-behind-snow",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "雪花的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "wind",
      "category": "earth",
      "topic": "风",
      "text": "空气整体流动形成风。受热不均等可造成气压差并驱动运动；自转和地形也改变风场。自然风通常使树叶运动，不能反过来认定树叶运动是大范围风的主要成因。",
      "source_url": "https://www.noaa.gov/jetstream/global/global-atmospheric-circulations",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "风的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "lightning",
      "category": "earth",
      "topic": "闪电与雷",
      "text": "雷来自闪电通道使空气快速加热与膨胀产生的声波。光的传播速度远大于空气中声音速度，所以远处闪电通常先被看见。听不见雷并不能单独作为室外雷暴安全判据。",
      "source_url": "https://www.noaa.gov/jetstream/lightning",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "闪电与雷的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "rainbow",
      "category": "earth",
      "topic": "彩虹",
      "text": "太阳光进入水滴发生折射，在内部反射并离开时再次折射，不同波长偏折不同，可形成主虹。可见虹取决于观察者、光源和水滴几何关系，不能视作固定实体桥或能接近触摸的终点。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/25-5-dispersion-the-rainbow-and-prisms",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "彩虹的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "rocks",
      "category": "earth",
      "topic": "岩石变化",
      "text": "岩石可经历风化、侵蚀、沉积、受热受压、熔融及冷却等变化，次序不固定。坚硬不等于永不改变。外形只是地质判断的一部分；圆润外形不足以唯一确定来自河流。",
      "source_url": "https://www.nps.gov/subjects/geology/rocks-and-minerals.htm",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "岩石变化的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "volcano",
      "category": "earth",
      "topic": "火山",
      "text": "岩浆是地下熔融岩质物质，伴随气体；上升与压力、浮力及气体释放等有关。喷发样式随条件不同。地球不是空心火炉，山体也不全是火山，需用地质证据判断。",
      "source_url": "https://www.usgs.gov/programs/VHP/about-volcanoes",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "火山的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "earthquake",
      "category": "earth",
      "topic": "地震",
      "text": "常见构造地震涉及断层两侧突然滑动与积累能量释放，扰动由地震波传播。震源位于地下且深度可变；震中是地表对应位置。孤立动物异常不足以可靠预报具体地震。",
      "source_url": "https://spaceplace.nasa.gov/earthquakes/en/",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "地震的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "river",
      "category": "earth",
      "topic": "流水侵蚀",
      "text": "河流可侵蚀、搬运并沉积岩土，运输中碰撞磨蚀可改变颗粒棱角。流速、岩性与搬运历程等影响结果，河内也可有新鲜棱角石。浑浊常涉及悬浮颗粒，不能由浑浊程度单独判断饮用安全。",
      "source_url": "https://water.usgs.gov/outreach/Posters/water_quality/grade_school/Page4.html",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "流水侵蚀的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "salty-ocean",
      "category": "earth",
      "topic": "海水盐分",
      "text": "岩石风化物经河流进入海洋，海底过程也输入溶解物质。蒸发主要移去水，盐类还存在其他输出途径。海域间盐度受条件影响；河水通常含盐较低，不能说完全没有溶解盐。",
      "source_url": "https://oceanservice.noaa.gov/facts/whysalty.html",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "海水盐分的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "earth-magnet",
      "category": "earth",
      "topic": "地磁场",
      "text": "地磁场主要与外核导电流体的运动有关，并会变化。磁针响应当地磁场，所指磁北与地理北不完全相同。附近磁性物体可造成局地偏转，不能据此断言全球地磁变化。",
      "source_url": "https://www.usgs.gov/faqs/how-does-earths-core-generate-a-magnetic-field",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "地磁场的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "green-leaf",
      "category": "life",
      "topic": "绿叶",
      "text": "叶绿素参与光能吸收，较强吸收红、蓝波段，常见绿叶较多反射或透过绿光。叶色还由其他色素和结构决定；红色叶片也可能含叶绿素并进行光合作用。",
      "source_url": "https://openstax.org/books/biology-2e/pages/8-2-the-light-dependent-reactions-of-photosynthesis",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "绿叶的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "photosynthesis",
      "category": "life",
      "topic": "光合作用",
      "text": "多数绿色植物依靠光能，把二氧化碳和水转化为糖等有机物。植物体中许多含碳物质的碳来自空气，而非全部取自土壤。水与矿质营养同样重要。植物在日夜均可进行呼吸等活动。",
      "source_url": "https://openstax.org/books/biology-2e/pages/8-1-overview-of-photosynthesis",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "光合作用的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "germination",
      "category": "life",
      "topic": "种子萌发",
      "text": "种子内有胚与储存物质。萌发要求适宜水分、温度和氧气，部分种类另有光照、休眠条件。长期积水可能限制供氧；未立即发芽也可能是条件或休眠问题，不足以独立证明已死亡。",
      "source_url": "https://openstax.org/books/biology-2e/pages/32-2-pollination-and-fertilization",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "种子萌发的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "roots",
      "category": "life",
      "topic": "植物的根",
      "text": "根具有固定、吸收水与矿质离子等作用，根毛增加接触面积。根不直接吞食完整小石块，也不能提供植物的全部有机碳来源。部分根具有储藏功能，例如胡萝卜肉质根。",
      "source_url": "https://openstax.org/books/biology-2e/pages/30-3-roots",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "植物的根的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "autumn-leaf",
      "category": "life",
      "topic": "秋叶",
      "text": "一些落叶植物秋季叶绿素减少，使已有黄色类胡萝卜素更明显；花青素的形成可增加红色。日照时长、温度等影响变化。常绿植物也会换叶，只是常不集中落光。",
      "source_url": "https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprd3817419.pdf",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "秋叶的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "pollination",
      "category": "life",
      "topic": "传粉",
      "text": "传粉是花粉向适当接受部位转移，之后还有受精、发育等过程。昆虫访花常为觅食，并可携带花粉；风、其他动物及自花传粉等也是途径，不能把植物繁殖全归于蜜蜂。",
      "source_url": "https://openstax.org/books/biology-2e/pages/32-2-pollination-and-fertilization",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "传粉的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "butterfly",
      "category": "life",
      "topic": "蝴蝶的一生",
      "text": "蝴蝶的完全变态包含卵、幼虫、蛹、成虫。蛹内发生复杂发育和组织重建，不是幼虫原样睡眠后只添翅膀。蛾也有毛毛虫样幼虫，需结合物种证据区分。",
      "source_url": "https://www.nps.gov/grca/learn/nature/butterflies.htm",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "蝴蝶的一生的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "fungi",
      "category": "life",
      "topic": "蘑菇",
      "text": "真菌通常从有机物获取营养，不像绿色植物光合造糖；可以腐生、寄生或共生。常见蘑菇为部分真菌的子实体，菌丝可分布在基质内。不能以颜色、美观或简单民间方法判定野菇可食。",
      "source_url": "https://openstax.org/books/biology-2e/pages/24-1-characteristics-of-fungi",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "蘑菇的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "decomposition",
      "category": "life",
      "topic": "落叶分解",
      "text": "细菌、真菌及部分动物参与落叶破碎、分解和物质循环。分解并非整片叶子直接蒸发，温度、水分、供氧与材料等影响速率。冷季许多分解过程减慢，但不能给所有落叶统一时长。",
      "source_url": "https://openstax.org/books/biology-2e/pages/46-3-biogeochemical-cycles",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "落叶分解的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "food-web",
      "category": "life",
      "topic": "食物网",
      "text": "取食关系常构成多条连接的食物网，能量与物质沿相关路径传递。某种生物减少的后果取决于替代食物、数量、环境等，不能凭单条链断言所有相关动物立即死亡。人也是生态系统的一部分。",
      "source_url": "https://openstax.org/books/biology-2e/pages/46-2-energy-flow-through-ecosystems",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "食物网的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "camouflage",
      "category": "life",
      "topic": "动物伪装",
      "text": "与环境相似的颜色、形态或行为可降低被发现概率，效果依背景与观察者而变。适应经跨世代演化形成，不是个体通过意愿立即变成想要的形状。背景改变可使原先有效的伪装变差。",
      "source_url": "https://openstax.org/books/biology-2e/pages/19-3-adaptive-evolution",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "动物伪装的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "coral",
      "category": "life",
      "topic": "珊瑚",
      "text": "珊瑚虫是动物，许多形成群体，部分建造钙质骨骼。造礁珊瑚常与微藻共生并获得部分有机物。白化涉及共生藻或其色素减少；有恢复可能，也有死亡风险，不能等同立即全部死亡。",
      "source_url": "https://oceanservice.noaa.gov/facts/coral.html",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "珊瑚的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "shadow",
      "category": "physics",
      "topic": "影子",
      "text": "在均匀介质中可用直线光路近似描述照明。不透明物体遮挡部分光可形成较暗区域。简单点光源模型下，光源和接收面不变时，遮挡物靠近光源通常使投影增大。影子不是独立物质。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/25-1-the-ray-aspect-of-light",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "影子的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "mirror",
      "category": "physics",
      "topic": "镜面反射",
      "text": "平面镜反射光并形成虚像；光路符合反射定律。可见像对应当前入射光，而非存储的旧图像。镜后虚像不能当作真实存在的另一个人，球反弹只能提供方向变化的有限类比。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/25-2-the-law-of-reflection",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "镜面反射的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "refraction",
      "category": "physics",
      "topic": "折射",
      "text": "光在介质分界面斜入射时通常改变传播方向，水下物体由此可有不同视位置。筷子或吸管外形未必真实改变。方向变化依观察与入射角而定，垂直入射时可不改变方向。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/25-3-the-law-of-refraction",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "折射的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "sound",
      "category": "physics",
      "topic": "声音振动",
      "text": "发声涉及物体振动，机械声波需要介质。频率与音高关系密切，振幅影响响度；加大拨动幅度不等同增加频率。真空不传播普通机械声音，但固体可作为另外的传播路径。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/17-1-sound",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "声音振动的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "echo",
      "category": "physics",
      "topic": "回声",
      "text": "声波可被界面反射，返回声与原声间隔足够大且足够强时可分辨为回声。距离很近时反射可能混成混响；表面材料、家具等影响反射和吸收。回声不能证明存在另一个说话者。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/17-7-ultrasound",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "回声的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "friction",
      "category": "physics",
      "topic": "摩擦",
      "text": "摩擦及抓地效果取决于材料、受力、表面和水冰等条件，花纹可能助排水，但不能保证任何地面都安全。摩擦既可支持行走、书写，也会带来磨损和能量耗散。粗糙程度不是唯一指标。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/5-1-friction",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "摩擦的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "buoyancy",
      "category": "physics",
      "topic": "浮力",
      "text": "流体压力差对物体产生浮力，其大小等于被排开流体的重力。船体形状及内部空气使整体可在足够排水量下浮起，重量或外形大小不能单独决定浮沉。进水改变负载及浮力条件，浸没物体也有浮力。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/11-7-archimedes-principle",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "浮力的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "melting",
      "category": "physics",
      "topic": "冰融化",
      "text": "冰和液水具有相同水分子组成，状态和排列特征不同。冰熔化需要能量，是否发生取决于热交换及环境条件。不能因时间推移而认定任何低温环境下的冰都会立刻融化。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/14-3-phase-change-and-latent-heat",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "冰融化的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "evaporation",
      "category": "physics",
      "topic": "蒸发",
      "text": "液体表面的分子可进入气相，蒸发可发生于沸点以下。净蒸发速度受温度、湿度、气流和暴露面积等影响；较高空气湿度通常使晾干变慢。白雾是微滴，气态水通常不可见。",
      "source_url": "https://www.usgs.gov/water-science-school/science/evaporation-and-water-cycle",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "蒸发的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "dissolving",
      "category": "physics",
      "topic": "溶解",
      "text": "食盐溶入水后以离子形式分散，物质未凭空消失。在相同条件下溶解度有限；搅拌影响速率，不能无限提高饱和容量。普通沙粒在常温水里明显悬浮、沉降不等同食盐溶解。",
      "source_url": "https://openstax.org/books/chemistry-2e/pages/11-3-solubility",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "溶解的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "inertia",
      "category": "physics",
      "topic": "惯性",
      "text": "物体具有保持原运动状态的惯性，速度改变需要合力。车辆减速时乘员原有运动不会瞬间自动同步改变，约束装置提供作用。不能把惯性描述为额外向前推人的新力。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/4-2-newtons-first-law-of-motion-inertia",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "惯性的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "static",
      "category": "physics",
      "topic": "静电",
      "text": "材料接触摩擦可发生电荷转移，满足电荷守恒。带电体能改变附近中性物体内部电荷分布并产生吸引，故吸引不直接证明对方原先带异号净电荷。湿度、材料和操作会影响可见效果，静电不是磁性。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/18-1-static-electricity-and-charge-conservation-of-charge",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "静电的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "arch",
      "category": "engineering",
      "topic": "拱桥",
      "text": "拱结构把荷载沿构件以压力传向两端支撑，并可对支座施加水平推力。几何、材料、连接与边界共同决定稳定和承载能力，移除支撑可能导致失稳。不能仅凭拱形保证任何负载下安全。",
      "source_url": "https://www.teachengineering.org/lessons/cub_brid_lesson01",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "拱桥的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "triangle",
      "category": "engineering",
      "topic": "三角支架",
      "text": "理想平面铰接杆件中，三角单元边长固定时形状稳定，四边形可通过角度变化而变形。实际加斜撑需要有效连接和承力。真实结构强度还取决于材料、尺寸等，不等于三角形永远更强。",
      "source_url": "https://www.teachengineering.org/lessons/cub_brid_lesson01",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "三角支架的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "lever",
      "category": "engineering",
      "topic": "杠杆",
      "text": "绕支点转动的效果与力及垂直力臂相关，移动支点可改变力的比例。在理想情况下省力以更大位移为代价，不能凭杠杆任意减少所需功。真实构件有强度和使用空间限制。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/9-5-simple-machines",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "杠杆的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "pulley",
      "category": "engineering",
      "topic": "滑轮",
      "text": "理想单个定滑轮通常改变施力方向而不降低力的大小。合适动滑轮组合可获得机械优势，但拉绳距离相应增加。真实绳与轮有摩擦和自重，不能将所有滑轮都视作固定减半拉力。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/9-5-simple-machines",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "滑轮的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "gears",
      "category": "engineering",
      "topic": "齿轮",
      "text": "相接触的外齿轮通过齿形传递转动，单次外啮合改变转向；连续两次外啮合使首尾转向相同。转速比受齿数比约束，齿多轮转速较低。传动有能量损耗，不是永动机构。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/9-5-simple-machines",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "齿轮的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "wheel",
      "category": "engineering",
      "topic": "车轮",
      "text": "轮子可把大部分直接滑动改为滚动，常使运输阻力下降，但保留轮轴摩擦及滚动阻力。轮胎和地面形变、障碍、轮径等影响性能；轮子在软地上不必像硬地一样省力。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/5-1-friction",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "车轮的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "airplane",
      "category": "engineering",
      "topic": "机翼",
      "text": "机翼改变气流的动量和压力分布而获得升力。形状、速度、迎角等影响效果。不存在上下表面气流必须同时在后缘会合的规定。迎角过大可造成分离和失速，不能无限增加升力。",
      "source_url": "https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/what-is-lift/",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "机翼的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "parachute",
      "category": "engineering",
      "topic": "降落伞",
      "text": "伞张开通常增大迎风面积和空气阻力，减缓下降而未取消重力。速度、形状、空气条件、重量与展开状态影响效果；某些阶段阻力可平衡重力。只有其他条件受控时才适合比较伞面积。",
      "source_url": "https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/what-is-drag/",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "降落伞的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "insulation",
      "category": "engineering",
      "topic": "保温",
      "text": "热交换可通过传导、对流和辐射发生，隔热结构减缓其中部分途径而非完全阻止。普通保温容器不主动产热；可同时延缓热水冷却及冷水升温。真实效果由设计和条件决定。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/14-5-conduction",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "保温的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "solar-cell",
      "category": "engineering",
      "topic": "太阳能电池",
      "text": "光伏器件把一部分入射光能转为电能，通常使用半导体，转换不可能按本例假定为全部无损。光照、温度和电路影响功率。阴天散射光仍可能供发电；夜间供电通常需另有储能等来源。",
      "source_url": "https://www.energy.gov/cmei/systems/solar-photovoltaic-technology-basics",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "太阳能电池的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "zipper",
      "category": "engineering",
      "topic": "拉链",
      "text": "普通拉链依靠拉头通道引导两列链齿进入相互咬合的位置，反向移动则分离。塑料链齿也能形成机械闭合，无需磁力。布料夹入或齿位不正可卡住，继续硬拉可能造成损坏。",
      "source_url": "https://www.ykk.com/english/ykk/tech/01.html",
      "checked_at": "2026-09-29",
      "source_review": "reference_read_claim_review_pending",
      "scope": "拉链的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    },
    {
      "id": "pixels",
      "category": "engineering",
      "topic": "屏幕像素",
      "text": "许多显示器用红绿蓝子像素的发光强度组合显示颜色，属于加色混合；颜料的吸收反射机制不同。各显示技术构造有差异。图像细节还受原图、屏幕尺寸、观察距离等限制，并非像素数唯一决定。",
      "source_url": "https://openstax.org/books/college-physics-2e/pages/26-3-color-and-color-vision",
      "checked_at": "pending",
      "source_review": "pending",
      "scope": "屏幕像素的入门解释；模型和比喻不能替代真实测量。",
      "kind": "fact",
      "reuse": "科学事实摘要和教学对话为原创中文表达；来源仅供事实核对，不复制来源的教材段落、题目或图像，不把网页正文纳入训练。链接不表示来源机构认可本数据或授予网页内容的训练许可。"
    }
  ],
  "train": [
    {
      "id": "day-night-01",
      "group_id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "day-night"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么白天亮、晚上黑？",
          "assistant": "地球在不停转，我们住的地方转向太阳就是白天，转到背光的一面就是晚上。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "太阳晚上关灯睡觉了吧？",
          "assistant": "太阳没有在晚上关灯。是我们所在的地面转到了背向太阳的一侧。还可以接着想：如果地球不转，就没有黑夜了吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "day-night-02",
      "group_id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "day-night"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么白天亮、晚上黑？",
          "assistant": "地球在不停转，我们住的地方转向太阳就是白天，转到背光的一面就是晚上。昼夜交替主要来自地球自转；太阳并不是每天绕着地球跑一圈。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "可以拿小球当地球，固定一盏灯当太阳，转动球看看亮面和暗面。灯和小球只演示照亮方向，不代表真实大小和距离；不要用眼睛直看太阳。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "day-night-03",
      "group_id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "day-night"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么白天亮、晚上黑？",
          "assistant": "昼夜交替主要来自地球自转；太阳并不是每天绕着地球跑一圈。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "如果地球不转，就没有黑夜了吗？",
          "assistant": "若地球不自转但仍绕太阳公转，太阳照到各地的情况仍会缓慢改变，不能简单说永远没有黑夜。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "day-night-04",
      "group_id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "day-night"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么白天亮、晚上黑？",
          "assistant": "地球在不停转，我们住的地方转向太阳就是白天，转到背光的一面就是晚上。还可以想想：如果地球不转，就没有黑夜了吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在普通台灯旁转动纸球，在球上画一个点，记录这个点何时被照亮；灯不必很亮。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：地球在不停转，我们住的地方转向太阳就是白天，转到背光的一面就是晚上。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "day-night-05",
      "group_id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "day-night"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳晚上关灯睡觉了吧？",
          "assistant": "太阳没有在晚上关灯。是我们所在的地面转到了背向太阳的一侧。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在普通台灯旁转动纸球，在球上画一个点，记录这个点何时被照亮；灯不必很亮。灯和小球只演示照亮方向，不代表真实大小和距离；不要用眼睛直看太阳。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "day-night-06",
      "group_id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "day-night"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么白天亮、晚上黑？先用一句话说。",
          "assistant": "地球在不停转，我们住的地方转向太阳就是白天，转到背光的一面就是晚上。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "昼夜交替主要来自地球自转；太阳并不是每天绕着地球跑一圈。打个比方：可以拿小球当地球，固定一盏灯当太阳，转动球看看亮面和暗面。灯和小球只演示照亮方向，不代表真实大小和距离；不要用眼睛直看太阳。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "day-night-07",
      "group_id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "day-night"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么白天亮、晚上黑？能打个比方吗？",
          "assistant": "地球在不停转，我们住的地方转向太阳就是白天，转到背光的一面就是晚上。可以拿小球当地球，固定一盏灯当太阳，转动球看看亮面和暗面。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "灯和小球只演示照亮方向，不代表真实大小和距离；不要用眼睛直看太阳。所以要记住的科学解释是：昼夜交替主要来自地球自转；太阳并不是每天绕着地球跑一圈。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "day-night-08",
      "group_id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "day-night"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么白天亮、晚上黑？",
          "assistant": "地球在不停转，我们住的地方转向太阳就是白天，转到背光的一面就是晚上。昼夜交替主要来自地球自转；太阳并不是每天绕着地球跑一圈。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在普通台灯旁转动纸球，在球上画一个点，记录这个点何时被照亮；灯不必很亮。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。昼夜的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "day-night-09",
      "group_id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "day-night"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么白天亮、晚上黑？不要考我，也不要反问。",
          "assistant": "昼夜交替主要来自地球自转；太阳并不是每天绕着地球跑一圈。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：太阳晚上关灯睡觉了吧？",
          "assistant": "太阳没有在晚上关灯。是我们所在的地面转到了背向太阳的一侧。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "day-night-10",
      "group_id": "day-night",
      "category": "space",
      "topic": "昼夜",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "day-night"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么白天亮、晚上黑？",
          "assistant": "地球在不停转，我们住的地方转向太阳就是白天，转到背光的一面就是晚上。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "如果地球不转，就没有黑夜了吗？",
          "assistant": "若地球不自转但仍绕太阳公转，太阳照到各地的情况仍会缓慢改变，不能简单说永远没有黑夜。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于昼夜，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "seasons-01",
      "group_id": "seasons",
      "category": "space",
      "topic": "四季",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "seasons"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么夏天热、冬天冷？",
          "assistant": "地球有点歪着转。夏天我们这边通常晒得更直、白天更长，得到的阳光更多。地轴倾斜使不同季节的太阳高度和白昼长度改变；南北半球季节相反，不能主要用日地距离解释。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "夏天地球离太阳更近，对吗？",
          "assistant": "距离的想法很自然，但两半球同时离太阳一样远，季节却相反。关键是倾斜造成的照射角度和日照时间变化。还可以接着想：为什么澳大利亚和中国的夏天不同步？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "seasons-02",
      "group_id": "seasons",
      "category": "space",
      "topic": "四季",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "seasons"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么夏天热、冬天冷？",
          "assistant": "地轴倾斜使不同季节的太阳高度和白昼长度改变；南北半球季节相反，不能主要用日地距离解释。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像手电光正照和斜照桌面，同一束光会铺在不同大小的地方。光斑只能帮助理解照射角度，不能独自解释白天长短，也不表示桌面就是地球。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "seasons-03",
      "group_id": "seasons",
      "category": "space",
      "topic": "四季",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "seasons"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么夏天热、冬天冷？",
          "assistant": "地球有点歪着转。夏天我们这边通常晒得更直、白天更长，得到的阳光更多。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "为什么澳大利亚和中国的夏天不同步？",
          "assistant": "两地分处南北半球，一个半球更朝向太阳时，另一个更背向太阳，所以季节大致相反。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "seasons-04",
      "group_id": "seasons",
      "category": "space",
      "topic": "四季",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "seasons"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么夏天热、冬天冷？",
          "assistant": "地球有点歪着转。夏天我们这边通常晒得更直、白天更长，得到的阳光更多。还可以想想：为什么澳大利亚和中国的夏天不同步？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "把普通手电固定高度，分别正照、斜照白纸，比较光斑面积；不照眼睛。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：地球有点歪着转。夏天我们这边通常晒得更直、白天更长，得到的阳光更多。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "seasons-05",
      "group_id": "seasons",
      "category": "space",
      "topic": "四季",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "seasons"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "夏天地球离太阳更近，对吗？",
          "assistant": "距离的想法很自然，但两半球同时离太阳一样远，季节却相反。关键是倾斜造成的照射角度和日照时间变化。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "把普通手电固定高度，分别正照、斜照白纸，比较光斑面积；不照眼睛。光斑只能帮助理解照射角度，不能独自解释白天长短，也不表示桌面就是地球。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "seasons-06",
      "group_id": "seasons",
      "category": "space",
      "topic": "四季",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "seasons"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么夏天热、冬天冷？先用一句话说。",
          "assistant": "地球有点歪着转。夏天我们这边通常晒得更直、白天更长，得到的阳光更多。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "地轴倾斜使不同季节的太阳高度和白昼长度改变；南北半球季节相反，不能主要用日地距离解释。打个比方：像手电光正照和斜照桌面，同一束光会铺在不同大小的地方。光斑只能帮助理解照射角度，不能独自解释白天长短，也不表示桌面就是地球。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "seasons-07",
      "group_id": "seasons",
      "category": "space",
      "topic": "四季",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "seasons"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么夏天热、冬天冷？能打个比方吗？",
          "assistant": "地球有点歪着转。夏天我们这边通常晒得更直、白天更长，得到的阳光更多。像手电光正照和斜照桌面，同一束光会铺在不同大小的地方。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "光斑只能帮助理解照射角度，不能独自解释白天长短，也不表示桌面就是地球。所以要记住的科学解释是：地轴倾斜使不同季节的太阳高度和白昼长度改变；南北半球季节相反，不能主要用日地距离解释。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "seasons-08",
      "group_id": "seasons",
      "category": "space",
      "topic": "四季",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "seasons"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么夏天热、冬天冷？",
          "assistant": "地轴倾斜使不同季节的太阳高度和白昼长度改变；南北半球季节相反，不能主要用日地距离解释。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "把普通手电固定高度，分别正照、斜照白纸，比较光斑面积；不照眼睛。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。四季的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "seasons-09",
      "group_id": "seasons",
      "category": "space",
      "topic": "四季",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "seasons"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么夏天热、冬天冷？不要考我，也不要反问。",
          "assistant": "地球有点歪着转。夏天我们这边通常晒得更直、白天更长，得到的阳光更多。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：夏天地球离太阳更近，对吗？",
          "assistant": "距离的想法很自然，但两半球同时离太阳一样远，季节却相反。关键是倾斜造成的照射角度和日照时间变化。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "seasons-10",
      "group_id": "seasons",
      "category": "space",
      "topic": "四季",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "seasons"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么夏天热、冬天冷？",
          "assistant": "地球有点歪着转。夏天我们这边通常晒得更直、白天更长，得到的阳光更多。地轴倾斜使不同季节的太阳高度和白昼长度改变；南北半球季节相反，不能主要用日地距离解释。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "为什么澳大利亚和中国的夏天不同步？",
          "assistant": "两地分处南北半球，一个半球更朝向太阳时，另一个更背向太阳，所以季节大致相反。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于四季，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "moonlight-01",
      "group_id": "moonlight",
      "category": "space",
      "topic": "月亮的光",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "moonlight"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮为什么会发亮？",
          "assistant": "月面主要靠反射太阳光被看见；它不像太阳那样由内部核聚变提供可见光。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "月亮里面也点着大火吗？",
          "assistant": "月亮不是靠大火照亮夜空。我们看到的主要是月面反射来的太阳光。还可以接着想：白天也能见到月亮吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "moonlight-02",
      "group_id": "moonlight",
      "category": "space",
      "topic": "月亮的光",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "moonlight"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮为什么会发亮？",
          "assistant": "月亮像被太阳照亮的一块大石头，把一些阳光反射到我们眼里。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "白纸放在灯下会亮起来，关灯后就暗了，纸没有自己变成灯泡。月面不是白纸，也不像平整镜子；这个比方只说明物体可以反射外来的光。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "moonlight-03",
      "group_id": "moonlight",
      "category": "space",
      "topic": "月亮的光",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "moonlight"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮为什么会发亮？",
          "assistant": "月亮像被太阳照亮的一块大石头，把一些阳光反射到我们眼里。月面主要靠反射太阳光被看见；它不像太阳那样由内部核聚变提供可见光。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "白天也能见到月亮吗？",
          "assistant": "能。有时月亮在白天的天空中，而且反射的光足够让我们看见；并非一定要等到夜晚。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "moonlight-04",
      "group_id": "moonlight",
      "category": "space",
      "topic": "月亮的光",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "moonlight"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮为什么会发亮？",
          "assistant": "月亮像被太阳照亮的一块大石头，把一些阳光反射到我们眼里。还可以想想：白天也能见到月亮吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用普通台灯照白纸，再拿纸到灯照不到的地方，比较亮暗；不要直看强灯。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：月亮像被太阳照亮的一块大石头，把一些阳光反射到我们眼里。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "moonlight-05",
      "group_id": "moonlight",
      "category": "space",
      "topic": "月亮的光",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "moonlight"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮里面也点着大火吗？",
          "assistant": "月亮不是靠大火照亮夜空。我们看到的主要是月面反射来的太阳光。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用普通台灯照白纸，再拿纸到灯照不到的地方，比较亮暗；不要直看强灯。月面不是白纸，也不像平整镜子；这个比方只说明物体可以反射外来的光。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "moonlight-06",
      "group_id": "moonlight",
      "category": "space",
      "topic": "月亮的光",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "moonlight"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮为什么会发亮？先用一句话说。",
          "assistant": "月亮像被太阳照亮的一块大石头，把一些阳光反射到我们眼里。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "月面主要靠反射太阳光被看见；它不像太阳那样由内部核聚变提供可见光。打个比方：白纸放在灯下会亮起来，关灯后就暗了，纸没有自己变成灯泡。月面不是白纸，也不像平整镜子；这个比方只说明物体可以反射外来的光。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "moonlight-07",
      "group_id": "moonlight",
      "category": "space",
      "topic": "月亮的光",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "moonlight"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮为什么会发亮？能打个比方吗？",
          "assistant": "月亮像被太阳照亮的一块大石头，把一些阳光反射到我们眼里。白纸放在灯下会亮起来，关灯后就暗了，纸没有自己变成灯泡。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "月面不是白纸，也不像平整镜子；这个比方只说明物体可以反射外来的光。所以要记住的科学解释是：月面主要靠反射太阳光被看见；它不像太阳那样由内部核聚变提供可见光。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "moonlight-08",
      "group_id": "moonlight",
      "category": "space",
      "topic": "月亮的光",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "moonlight"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮为什么会发亮？",
          "assistant": "月亮像被太阳照亮的一块大石头，把一些阳光反射到我们眼里。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用普通台灯照白纸，再拿纸到灯照不到的地方，比较亮暗；不要直看强灯。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。月亮的光的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "moonlight-09",
      "group_id": "moonlight",
      "category": "space",
      "topic": "月亮的光",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "moonlight"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮为什么会发亮？不要考我，也不要反问。",
          "assistant": "月亮像被太阳照亮的一块大石头，把一些阳光反射到我们眼里。月面主要靠反射太阳光被看见；它不像太阳那样由内部核聚变提供可见光。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：月亮里面也点着大火吗？",
          "assistant": "月亮不是靠大火照亮夜空。我们看到的主要是月面反射来的太阳光。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "moonlight-10",
      "group_id": "moonlight",
      "category": "space",
      "topic": "月亮的光",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "moonlight"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮为什么会发亮？",
          "assistant": "月面主要靠反射太阳光被看见；它不像太阳那样由内部核聚变提供可见光。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "白天也能见到月亮吗？",
          "assistant": "能。有时月亮在白天的天空中，而且反射的光足够让我们看见；并非一定要等到夜晚。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于月亮的光，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "moon-phase-01",
      "group_id": "moon-phase",
      "category": "space",
      "topic": "月相",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "moon-phase"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮怎么一会儿圆、一会儿弯？",
          "assistant": "月亮没有被咬掉。太阳照亮它的一半，我们从地球上看到的亮面份量会变。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "弯月是地球挡住了一半阳光吗？",
          "assistant": "普通弯月主要是观察角度变了。地球影子落到月面上属于月食，是另一种现象。还可以接着想：半个月亮时，另一半真的消失了吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "moon-phase-02",
      "group_id": "moon-phase",
      "category": "space",
      "topic": "月相",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "moon-phase"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮怎么一会儿圆、一会儿弯？",
          "assistant": "月亮没有被咬掉。太阳照亮它的一半，我们从地球上看到的亮面份量会变。月球绕地球运动，日地月相对位置变化，让我们看到不同部分的受光面；普通月相不是地球影子遮出来的。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "用灯照球，绕到不同位置看，球没变形，能看到的亮面却会改变。模型要避开头部挡光，否则演示的是遮挡；真实月球也没有变成薄饼。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "moon-phase-03",
      "group_id": "moon-phase",
      "category": "space",
      "topic": "月相",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "moon-phase"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮怎么一会儿圆、一会儿弯？",
          "assistant": "月球绕地球运动，日地月相对位置变化，让我们看到不同部分的受光面；普通月相不是地球影子遮出来的。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "半个月亮时，另一半真的消失了吗？",
          "assistant": "没有。整个月球还在，只是从我们的方向看，有一部分月面没有被阳光直接照亮。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "moon-phase-04",
      "group_id": "moon-phase",
      "category": "space",
      "topic": "月相",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "moon-phase"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮怎么一会儿圆、一会儿弯？",
          "assistant": "月亮没有被咬掉。太阳照亮它的一半，我们从地球上看到的亮面份量会变。还可以想想：半个月亮时，另一半真的消失了吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在安全室内用台灯照球，改变观察位置，画下亮面形状；不要对太阳做这个实验。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：月亮没有被咬掉。太阳照亮它的一半，我们从地球上看到的亮面份量会变。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "moon-phase-05",
      "group_id": "moon-phase",
      "category": "space",
      "topic": "月相",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "moon-phase"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "弯月是地球挡住了一半阳光吗？",
          "assistant": "普通弯月主要是观察角度变了。地球影子落到月面上属于月食，是另一种现象。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在安全室内用台灯照球，改变观察位置，画下亮面形状；不要对太阳做这个实验。模型要避开头部挡光，否则演示的是遮挡；真实月球也没有变成薄饼。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "moon-phase-06",
      "group_id": "moon-phase",
      "category": "space",
      "topic": "月相",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "moon-phase"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮怎么一会儿圆、一会儿弯？先用一句话说。",
          "assistant": "月亮没有被咬掉。太阳照亮它的一半，我们从地球上看到的亮面份量会变。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "月球绕地球运动，日地月相对位置变化，让我们看到不同部分的受光面；普通月相不是地球影子遮出来的。打个比方：用灯照球，绕到不同位置看，球没变形，能看到的亮面却会改变。模型要避开头部挡光，否则演示的是遮挡；真实月球也没有变成薄饼。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "moon-phase-07",
      "group_id": "moon-phase",
      "category": "space",
      "topic": "月相",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "moon-phase"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮怎么一会儿圆、一会儿弯？能打个比方吗？",
          "assistant": "月亮没有被咬掉。太阳照亮它的一半，我们从地球上看到的亮面份量会变。用灯照球，绕到不同位置看，球没变形，能看到的亮面却会改变。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "模型要避开头部挡光，否则演示的是遮挡；真实月球也没有变成薄饼。所以要记住的科学解释是：月球绕地球运动，日地月相对位置变化，让我们看到不同部分的受光面；普通月相不是地球影子遮出来的。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "moon-phase-08",
      "group_id": "moon-phase",
      "category": "space",
      "topic": "月相",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "moon-phase"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮怎么一会儿圆、一会儿弯？",
          "assistant": "月亮没有被咬掉。太阳照亮它的一半，我们从地球上看到的亮面份量会变。月球绕地球运动，日地月相对位置变化，让我们看到不同部分的受光面；普通月相不是地球影子遮出来的。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在安全室内用台灯照球，改变观察位置，画下亮面形状；不要对太阳做这个实验。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。月相的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "moon-phase-09",
      "group_id": "moon-phase",
      "category": "space",
      "topic": "月相",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "moon-phase"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮怎么一会儿圆、一会儿弯？不要考我，也不要反问。",
          "assistant": "月球绕地球运动，日地月相对位置变化，让我们看到不同部分的受光面；普通月相不是地球影子遮出来的。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：弯月是地球挡住了一半阳光吗？",
          "assistant": "普通弯月主要是观察角度变了。地球影子落到月面上属于月食，是另一种现象。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "moon-phase-10",
      "group_id": "moon-phase",
      "category": "space",
      "topic": "月相",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "moon-phase"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮怎么一会儿圆、一会儿弯？",
          "assistant": "月亮没有被咬掉。太阳照亮它的一半，我们从地球上看到的亮面份量会变。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "半个月亮时，另一半真的消失了吗？",
          "assistant": "没有。整个月球还在，只是从我们的方向看，有一部分月面没有被阳光直接照亮。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于月相，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "tides-01",
      "group_id": "tides",
      "category": "space",
      "topic": "潮汐",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "tides"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么有时涨、有时退？",
          "assistant": "月亮和太阳的引力让海水分布发生变化，海岸就会出现涨潮和退潮。潮汐与月球、太阳引力在地球各处的差异有关；实际潮时还受海岸形状和水深影响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "月亮像吸管，只把正下面的海水吸起来吧？",
          "assistant": "吸管这个想法少了另一侧。潮汐要看不同位置受力的差异，地球朝月球和背月球两侧都可出现潮汐隆起。还可以接着想：为什么不同海边涨潮时间不一样？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "tides-02",
      "group_id": "tides",
      "category": "space",
      "topic": "潮汐",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "tides"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么有时涨、有时退？",
          "assistant": "潮汐与月球、太阳引力在地球各处的差异有关；实际潮时还受海岸形状和水深影响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "可以把引力差想成一条带子两头受到的拉力不完全相同。海洋不是橡皮带，潮汐也不是月亮用手提水；比方只强调不同位置的差异。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "tides-03",
      "group_id": "tides",
      "category": "space",
      "topic": "潮汐",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "tides"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么有时涨、有时退？",
          "assistant": "月亮和太阳的引力让海水分布发生变化，海岸就会出现涨潮和退潮。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "为什么不同海边涨潮时间不一样？",
          "assistant": "海湾形状、水深和海水传播都影响潮汐，不能只根据月亮是否在头顶来判断。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "tides-04",
      "group_id": "tides",
      "category": "space",
      "topic": "潮汐",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "tides"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么有时涨、有时退？",
          "assistant": "月亮和太阳的引力让海水分布发生变化，海岸就会出现涨潮和退潮。还可以想想：为什么不同海边涨潮时间不一样？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "由成人陪同查看当地官方潮汐表，比较连续几天的高潮时间；只读记录，不去追逐潮水。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：月亮和太阳的引力让海水分布发生变化，海岸就会出现涨潮和退潮。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "tides-05",
      "group_id": "tides",
      "category": "space",
      "topic": "潮汐",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "tides"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "月亮像吸管，只把正下面的海水吸起来吧？",
          "assistant": "吸管这个想法少了另一侧。潮汐要看不同位置受力的差异，地球朝月球和背月球两侧都可出现潮汐隆起。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "由成人陪同查看当地官方潮汐表，比较连续几天的高潮时间；只读记录，不去追逐潮水。海洋不是橡皮带，潮汐也不是月亮用手提水；比方只强调不同位置的差异。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "tides-06",
      "group_id": "tides",
      "category": "space",
      "topic": "潮汐",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "tides"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么有时涨、有时退？先用一句话说。",
          "assistant": "月亮和太阳的引力让海水分布发生变化，海岸就会出现涨潮和退潮。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "潮汐与月球、太阳引力在地球各处的差异有关；实际潮时还受海岸形状和水深影响。打个比方：可以把引力差想成一条带子两头受到的拉力不完全相同。海洋不是橡皮带，潮汐也不是月亮用手提水；比方只强调不同位置的差异。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "tides-07",
      "group_id": "tides",
      "category": "space",
      "topic": "潮汐",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "tides"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么有时涨、有时退？能打个比方吗？",
          "assistant": "月亮和太阳的引力让海水分布发生变化，海岸就会出现涨潮和退潮。可以把引力差想成一条带子两头受到的拉力不完全相同。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "海洋不是橡皮带，潮汐也不是月亮用手提水；比方只强调不同位置的差异。所以要记住的科学解释是：潮汐与月球、太阳引力在地球各处的差异有关；实际潮时还受海岸形状和水深影响。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "tides-08",
      "group_id": "tides",
      "category": "space",
      "topic": "潮汐",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "tides"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么有时涨、有时退？",
          "assistant": "潮汐与月球、太阳引力在地球各处的差异有关；实际潮时还受海岸形状和水深影响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "由成人陪同查看当地官方潮汐表，比较连续几天的高潮时间；只读记录，不去追逐潮水。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。潮汐的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "tides-09",
      "group_id": "tides",
      "category": "space",
      "topic": "潮汐",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "tides"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么有时涨、有时退？不要考我，也不要反问。",
          "assistant": "月亮和太阳的引力让海水分布发生变化，海岸就会出现涨潮和退潮。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：月亮像吸管，只把正下面的海水吸起来吧？",
          "assistant": "吸管这个想法少了另一侧。潮汐要看不同位置受力的差异，地球朝月球和背月球两侧都可出现潮汐隆起。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "tides-10",
      "group_id": "tides",
      "category": "space",
      "topic": "潮汐",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "tides"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么有时涨、有时退？",
          "assistant": "月亮和太阳的引力让海水分布发生变化，海岸就会出现涨潮和退潮。潮汐与月球、太阳引力在地球各处的差异有关；实际潮时还受海岸形状和水深影响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "为什么不同海边涨潮时间不一样？",
          "assistant": "海湾形状、水深和海水传播都影响潮汐，不能只根据月亮是否在头顶来判断。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于潮汐，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "orbit-01",
      "group_id": "orbit",
      "category": "space",
      "topic": "绕地运动",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "orbit"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "卫星为什么不掉到地上？",
          "assistant": "合适的横向速度与重力共同形成轨道运动；在轨并不意味着没有重力。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "太空没有重力，所以卫星停在那里？",
          "assistant": "近地轨道仍有很强的重力。卫星不断向地球方向下落，同时向前运动，才沿轨道飞行。还可以接着想：宇航员漂浮是不是也因为没有重力？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "orbit-02",
      "group_id": "orbit",
      "category": "space",
      "topic": "绕地运动",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "orbit"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "卫星为什么不掉到地上？",
          "assistant": "卫星也被地球拉着，但它还在很快地向前走，走出一条绕着地球的弯路。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "可以想象球向前飞又向下弯；卫星的轨迹弯曲得能绕过地球。随手扔出的球达不到入轨条件；不要从高处抛东西来模拟卫星。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "orbit-03",
      "group_id": "orbit",
      "category": "space",
      "topic": "绕地运动",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "orbit"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "卫星为什么不掉到地上？",
          "assistant": "卫星也被地球拉着，但它还在很快地向前走，走出一条绕着地球的弯路。合适的横向速度与重力共同形成轨道运动；在轨并不意味着没有重力。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "宇航员漂浮是不是也因为没有重力？",
          "assistant": "他们和空间站一起处于绕地的自由下落中，彼此不需要像站在地面那样承托，所以出现失重感。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "orbit-04",
      "group_id": "orbit",
      "category": "space",
      "topic": "绕地运动",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "orbit"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "卫星为什么不掉到地上？",
          "assistant": "卫星也被地球拉着，但它还在很快地向前走，走出一条绕着地球的弯路。还可以想想：宇航员漂浮是不是也因为没有重力？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在纸上画圆形地球，再画卫星向前的箭头和指向地球的箭头，比较两个方向的作用。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：卫星也被地球拉着，但它还在很快地向前走，走出一条绕着地球的弯路。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "orbit-05",
      "group_id": "orbit",
      "category": "space",
      "topic": "绕地运动",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "orbit"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太空没有重力，所以卫星停在那里？",
          "assistant": "近地轨道仍有很强的重力。卫星不断向地球方向下落，同时向前运动，才沿轨道飞行。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在纸上画圆形地球，再画卫星向前的箭头和指向地球的箭头，比较两个方向的作用。随手扔出的球达不到入轨条件；不要从高处抛东西来模拟卫星。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "orbit-06",
      "group_id": "orbit",
      "category": "space",
      "topic": "绕地运动",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "orbit"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "卫星为什么不掉到地上？先用一句话说。",
          "assistant": "卫星也被地球拉着，但它还在很快地向前走，走出一条绕着地球的弯路。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "合适的横向速度与重力共同形成轨道运动；在轨并不意味着没有重力。打个比方：可以想象球向前飞又向下弯；卫星的轨迹弯曲得能绕过地球。随手扔出的球达不到入轨条件；不要从高处抛东西来模拟卫星。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "orbit-07",
      "group_id": "orbit",
      "category": "space",
      "topic": "绕地运动",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "orbit"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "卫星为什么不掉到地上？能打个比方吗？",
          "assistant": "卫星也被地球拉着，但它还在很快地向前走，走出一条绕着地球的弯路。可以想象球向前飞又向下弯；卫星的轨迹弯曲得能绕过地球。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "随手扔出的球达不到入轨条件；不要从高处抛东西来模拟卫星。所以要记住的科学解释是：合适的横向速度与重力共同形成轨道运动；在轨并不意味着没有重力。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "orbit-08",
      "group_id": "orbit",
      "category": "space",
      "topic": "绕地运动",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "orbit"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "卫星为什么不掉到地上？",
          "assistant": "卫星也被地球拉着，但它还在很快地向前走，走出一条绕着地球的弯路。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在纸上画圆形地球，再画卫星向前的箭头和指向地球的箭头，比较两个方向的作用。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。绕地运动的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "orbit-09",
      "group_id": "orbit",
      "category": "space",
      "topic": "绕地运动",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "orbit"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "卫星为什么不掉到地上？不要考我，也不要反问。",
          "assistant": "卫星也被地球拉着，但它还在很快地向前走，走出一条绕着地球的弯路。合适的横向速度与重力共同形成轨道运动；在轨并不意味着没有重力。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：太空没有重力，所以卫星停在那里？",
          "assistant": "近地轨道仍有很强的重力。卫星不断向地球方向下落，同时向前运动，才沿轨道飞行。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "orbit-10",
      "group_id": "orbit",
      "category": "space",
      "topic": "绕地运动",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "orbit"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "卫星为什么不掉到地上？",
          "assistant": "合适的横向速度与重力共同形成轨道运动；在轨并不意味着没有重力。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "宇航员漂浮是不是也因为没有重力？",
          "assistant": "他们和空间站一起处于绕地的自由下落中，彼此不需要像站在地面那样承托，所以出现失重感。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于绕地运动，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "stars-01",
      "group_id": "stars",
      "category": "space",
      "topic": "星星眨眼",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "stars"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "星星为什么一闪一闪？",
          "assistant": "星光穿过不停变化的空气，到眼睛这里会忽亮忽暗，看起来像在眨眼。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "是星星在向我发信号吗？",
          "assistant": "眨眼的样子很像信号，但常见闪烁主要来自地球空气的变化，并不是星星有意和我们说话。还可以接着想：到了没有空气的太空也这样闪吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "stars-02",
      "group_id": "stars",
      "category": "space",
      "topic": "星星眨眼",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "stars"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "星星为什么一闪一闪？",
          "assistant": "星光穿过不停变化的空气，到眼睛这里会忽亮忽暗，看起来像在眨眼。大气折射随气流变化，使遥远恒星的点状像闪烁；行星有可分辨的视面，通常闪烁较弱。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像隔着轻轻晃动的水看池底，物体没在跳，光经过的路却在变。水和空气的具体情况不同，这个比方只说明中间介质会影响看到的光。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "stars-03",
      "group_id": "stars",
      "category": "space",
      "topic": "星星眨眼",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "stars"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "星星为什么一闪一闪？",
          "assistant": "大气折射随气流变化，使遥远恒星的点状像闪烁；行星有可分辨的视面，通常闪烁较弱。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "到了没有空气的太空也这样闪吗？",
          "assistant": "通常不会有地球大气造成的这种闪烁；星星本身的亮度变化又是另一个问题。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "stars-04",
      "group_id": "stars",
      "category": "space",
      "topic": "星星眨眼",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "stars"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "星星为什么一闪一闪？",
          "assistant": "星光穿过不停变化的空气，到眼睛这里会忽亮忽暗，看起来像在眨眼。还可以想想：到了没有空气的太空也这样闪吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在成人陪同下选安全位置，观察一颗已辨认的恒星；不必用望远镜，不把每个亮点都当恒星。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：星光穿过不停变化的空气，到眼睛这里会忽亮忽暗，看起来像在眨眼。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "stars-05",
      "group_id": "stars",
      "category": "space",
      "topic": "星星眨眼",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "stars"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "是星星在向我发信号吗？",
          "assistant": "眨眼的样子很像信号，但常见闪烁主要来自地球空气的变化，并不是星星有意和我们说话。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在成人陪同下选安全位置，观察一颗已辨认的恒星；不必用望远镜，不把每个亮点都当恒星。水和空气的具体情况不同，这个比方只说明中间介质会影响看到的光。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "stars-06",
      "group_id": "stars",
      "category": "space",
      "topic": "星星眨眼",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "stars"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "星星为什么一闪一闪？先用一句话说。",
          "assistant": "星光穿过不停变化的空气，到眼睛这里会忽亮忽暗，看起来像在眨眼。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "大气折射随气流变化，使遥远恒星的点状像闪烁；行星有可分辨的视面，通常闪烁较弱。打个比方：像隔着轻轻晃动的水看池底，物体没在跳，光经过的路却在变。水和空气的具体情况不同，这个比方只说明中间介质会影响看到的光。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "stars-07",
      "group_id": "stars",
      "category": "space",
      "topic": "星星眨眼",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "stars"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "星星为什么一闪一闪？能打个比方吗？",
          "assistant": "星光穿过不停变化的空气，到眼睛这里会忽亮忽暗，看起来像在眨眼。像隔着轻轻晃动的水看池底，物体没在跳，光经过的路却在变。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "水和空气的具体情况不同，这个比方只说明中间介质会影响看到的光。所以要记住的科学解释是：大气折射随气流变化，使遥远恒星的点状像闪烁；行星有可分辨的视面，通常闪烁较弱。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "stars-08",
      "group_id": "stars",
      "category": "space",
      "topic": "星星眨眼",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "stars"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "星星为什么一闪一闪？",
          "assistant": "星光穿过不停变化的空气，到眼睛这里会忽亮忽暗，看起来像在眨眼。大气折射随气流变化，使遥远恒星的点状像闪烁；行星有可分辨的视面，通常闪烁较弱。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在成人陪同下选安全位置，观察一颗已辨认的恒星；不必用望远镜，不把每个亮点都当恒星。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。星星眨眼的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "stars-09",
      "group_id": "stars",
      "category": "space",
      "topic": "星星眨眼",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "stars"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "星星为什么一闪一闪？不要考我，也不要反问。",
          "assistant": "大气折射随气流变化，使遥远恒星的点状像闪烁；行星有可分辨的视面，通常闪烁较弱。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：是星星在向我发信号吗？",
          "assistant": "眨眼的样子很像信号，但常见闪烁主要来自地球空气的变化，并不是星星有意和我们说话。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "stars-10",
      "group_id": "stars",
      "category": "space",
      "topic": "星星眨眼",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "stars"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "星星为什么一闪一闪？",
          "assistant": "星光穿过不停变化的空气，到眼睛这里会忽亮忽暗，看起来像在眨眼。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "到了没有空气的太空也这样闪吗？",
          "assistant": "通常不会有地球大气造成的这种闪烁；星星本身的亮度变化又是另一个问题。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于星星眨眼，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "sun-01",
      "group_id": "sun",
      "category": "space",
      "topic": "太阳的能量",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "sun"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳怎么一直那么亮？",
          "assistant": "太阳中心非常热，那里发生的核聚变释放能量，让太阳不断发光。太阳主要将氢通过核聚变转成氦并释放能量；这与燃烧木头等化学反应不同，太阳燃料也不是无限的。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "太阳是在烧一大堆煤吗？",
          "assistant": "煤燃烧是化学反应，太阳的主要能量来自核聚变。两者都能放出能量，过程却不同。还可以接着想：太阳会永远这样亮吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "sun-02",
      "group_id": "sun",
      "category": "space",
      "topic": "太阳的能量",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "sun"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳怎么一直那么亮？",
          "assistant": "太阳主要将氢通过核聚变转成氦并释放能量；这与燃烧木头等化学反应不同，太阳燃料也不是无限的。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "把太阳想成一个巨大的能量工厂，能帮助记住它把内部能量送向外界。工厂只是比喻，太阳里没有工人、锅炉或运煤车；不能用火焰实验模拟核聚变。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "sun-03",
      "group_id": "sun",
      "category": "space",
      "topic": "太阳的能量",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "sun"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳怎么一直那么亮？",
          "assistant": "太阳中心非常热，那里发生的核聚变释放能量，让太阳不断发光。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "太阳会永远这样亮吗？",
          "assistant": "不会。恒星会演化，太阳的燃料和结构会逐渐改变，但这不是我们日常要担心明天就发生的事。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "sun-04",
      "group_id": "sun",
      "category": "space",
      "topic": "太阳的能量",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "sun"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳怎么一直那么亮？",
          "assistant": "太阳中心非常热，那里发生的核聚变释放能量，让太阳不断发光。还可以想想：太阳会永远这样亮吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "阅读正规天文机构的太阳结构图，找出核心和表面；不要直接或用望远镜看太阳。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：太阳中心非常热，那里发生的核聚变释放能量，让太阳不断发光。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "sun-05",
      "group_id": "sun",
      "category": "space",
      "topic": "太阳的能量",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "sun"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳是在烧一大堆煤吗？",
          "assistant": "煤燃烧是化学反应，太阳的主要能量来自核聚变。两者都能放出能量，过程却不同。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "阅读正规天文机构的太阳结构图，找出核心和表面；不要直接或用望远镜看太阳。工厂只是比喻，太阳里没有工人、锅炉或运煤车；不能用火焰实验模拟核聚变。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "sun-06",
      "group_id": "sun",
      "category": "space",
      "topic": "太阳的能量",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "sun"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳怎么一直那么亮？先用一句话说。",
          "assistant": "太阳中心非常热，那里发生的核聚变释放能量，让太阳不断发光。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "太阳主要将氢通过核聚变转成氦并释放能量；这与燃烧木头等化学反应不同，太阳燃料也不是无限的。打个比方：把太阳想成一个巨大的能量工厂，能帮助记住它把内部能量送向外界。工厂只是比喻，太阳里没有工人、锅炉或运煤车；不能用火焰实验模拟核聚变。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "sun-07",
      "group_id": "sun",
      "category": "space",
      "topic": "太阳的能量",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "sun"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳怎么一直那么亮？能打个比方吗？",
          "assistant": "太阳中心非常热，那里发生的核聚变释放能量，让太阳不断发光。把太阳想成一个巨大的能量工厂，能帮助记住它把内部能量送向外界。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "工厂只是比喻，太阳里没有工人、锅炉或运煤车；不能用火焰实验模拟核聚变。所以要记住的科学解释是：太阳主要将氢通过核聚变转成氦并释放能量；这与燃烧木头等化学反应不同，太阳燃料也不是无限的。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "sun-08",
      "group_id": "sun",
      "category": "space",
      "topic": "太阳的能量",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "sun"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳怎么一直那么亮？",
          "assistant": "太阳主要将氢通过核聚变转成氦并释放能量；这与燃烧木头等化学反应不同，太阳燃料也不是无限的。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "阅读正规天文机构的太阳结构图，找出核心和表面；不要直接或用望远镜看太阳。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。太阳的能量的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "sun-09",
      "group_id": "sun",
      "category": "space",
      "topic": "太阳的能量",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "sun"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳怎么一直那么亮？不要考我，也不要反问。",
          "assistant": "太阳中心非常热，那里发生的核聚变释放能量，让太阳不断发光。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：太阳是在烧一大堆煤吗？",
          "assistant": "煤燃烧是化学反应，太阳的主要能量来自核聚变。两者都能放出能量，过程却不同。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "sun-10",
      "group_id": "sun",
      "category": "space",
      "topic": "太阳的能量",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "sun"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳怎么一直那么亮？",
          "assistant": "太阳中心非常热，那里发生的核聚变释放能量，让太阳不断发光。太阳主要将氢通过核聚变转成氦并释放能量；这与燃烧木头等化学反应不同，太阳燃料也不是无限的。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "太阳会永远这样亮吗？",
          "assistant": "不会。恒星会演化，太阳的燃料和结构会逐渐改变，但这不是我们日常要担心明天就发生的事。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于太阳的能量，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "meteor-01",
      "group_id": "meteor",
      "category": "space",
      "topic": "流星",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "meteor"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "流星真的是星星掉下来了吗？",
          "assistant": "流星是流星体进入大气产生的发光现象；到达地面的残余物叫陨石，恒星不会这样掉下来。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我捡到黑石头就是流星了吗？",
          "assistant": "流星是天空中的发光现象，落地的才可能叫陨石；普通石头也可能黑，单凭颜色不能鉴定。还可以接着想：许愿会让流星飞得更久吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "meteor-02",
      "group_id": "meteor",
      "category": "space",
      "topic": "流星",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "meteor"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "流星真的是星星掉下来了吗？",
          "assistant": "通常是小石块等物体冲进地球大气，让周围气体和物体发亮，划出一道光。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像给天空划了一笔亮线，不过这支“笔”是进入大气的小天体。亮线不是实体长尾，也不是恒星从原位置坠落；比喻不说明具体发光机制。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "meteor-03",
      "group_id": "meteor",
      "category": "space",
      "topic": "流星",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "meteor"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "流星真的是星星掉下来了吗？",
          "assistant": "通常是小石块等物体冲进地球大气，让周围气体和物体发亮，划出一道光。流星是流星体进入大气产生的发光现象；到达地面的残余物叫陨石，恒星不会这样掉下来。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "许愿会让流星飞得更久吗？",
          "assistant": "许愿可以是一个仪式，但没有证据表明愿望会改变流星体的运动或发光时间。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "meteor-04",
      "group_id": "meteor",
      "category": "space",
      "topic": "流星",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "meteor"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "流星真的是星星掉下来了吗？",
          "assistant": "通常是小石块等物体冲进地球大气，让周围气体和物体发亮，划出一道光。还可以想想：许愿会让流星飞得更久吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "看天文机构的流星录像，留意亮线出现多久，和固定星点比较；不需要夜间独自外出。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：通常是小石块等物体冲进地球大气，让周围气体和物体发亮，划出一道光。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "meteor-05",
      "group_id": "meteor",
      "category": "space",
      "topic": "流星",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "meteor"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "我捡到黑石头就是流星了吗？",
          "assistant": "流星是天空中的发光现象，落地的才可能叫陨石；普通石头也可能黑，单凭颜色不能鉴定。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "看天文机构的流星录像，留意亮线出现多久，和固定星点比较；不需要夜间独自外出。亮线不是实体长尾，也不是恒星从原位置坠落；比喻不说明具体发光机制。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "meteor-06",
      "group_id": "meteor",
      "category": "space",
      "topic": "流星",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "meteor"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "流星真的是星星掉下来了吗？先用一句话说。",
          "assistant": "通常是小石块等物体冲进地球大气，让周围气体和物体发亮，划出一道光。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "流星是流星体进入大气产生的发光现象；到达地面的残余物叫陨石，恒星不会这样掉下来。打个比方：像给天空划了一笔亮线，不过这支“笔”是进入大气的小天体。亮线不是实体长尾，也不是恒星从原位置坠落；比喻不说明具体发光机制。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "meteor-07",
      "group_id": "meteor",
      "category": "space",
      "topic": "流星",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "meteor"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "流星真的是星星掉下来了吗？能打个比方吗？",
          "assistant": "通常是小石块等物体冲进地球大气，让周围气体和物体发亮，划出一道光。像给天空划了一笔亮线，不过这支“笔”是进入大气的小天体。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "亮线不是实体长尾，也不是恒星从原位置坠落；比喻不说明具体发光机制。所以要记住的科学解释是：流星是流星体进入大气产生的发光现象；到达地面的残余物叫陨石，恒星不会这样掉下来。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "meteor-08",
      "group_id": "meteor",
      "category": "space",
      "topic": "流星",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "meteor"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "流星真的是星星掉下来了吗？",
          "assistant": "通常是小石块等物体冲进地球大气，让周围气体和物体发亮，划出一道光。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "看天文机构的流星录像，留意亮线出现多久，和固定星点比较；不需要夜间独自外出。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。流星的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "meteor-09",
      "group_id": "meteor",
      "category": "space",
      "topic": "流星",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "meteor"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "流星真的是星星掉下来了吗？不要考我，也不要反问。",
          "assistant": "通常是小石块等物体冲进地球大气，让周围气体和物体发亮，划出一道光。流星是流星体进入大气产生的发光现象；到达地面的残余物叫陨石，恒星不会这样掉下来。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：我捡到黑石头就是流星了吗？",
          "assistant": "流星是天空中的发光现象，落地的才可能叫陨石；普通石头也可能黑，单凭颜色不能鉴定。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "meteor-10",
      "group_id": "meteor",
      "category": "space",
      "topic": "流星",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "meteor"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "流星真的是星星掉下来了吗？",
          "assistant": "流星是流星体进入大气产生的发光现象；到达地面的残余物叫陨石，恒星不会这样掉下来。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "许愿会让流星飞得更久吗？",
          "assistant": "许愿可以是一个仪式，但没有证据表明愿望会改变流星体的运动或发光时间。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于流星，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "comet-01",
      "group_id": "comet",
      "category": "space",
      "topic": "彗星",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "comet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "彗星为什么拖着长尾巴？",
          "assistant": "彗星靠近太阳时，冰升华成气体，带出尘埃，太阳的影响让它们形成尾巴。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "尾巴一定在彗星飞行方向的后面吧？",
          "assistant": "不一定。决定尾巴朝向的重要因素是太阳，彗星远离太阳时，尾巴甚至能朝着前进方向。还可以接着想：彗星一直都有大尾巴吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "comet-02",
      "group_id": "comet",
      "category": "space",
      "topic": "彗星",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "comet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "彗星为什么拖着长尾巴？",
          "assistant": "彗星靠近太阳时，冰升华成气体，带出尘埃，太阳的影响让它们形成尾巴。太阳加热使彗星释放气体和尘埃；离子尾主要受太阳风影响，尘埃尾受辐射压力影响，尾巴大体背离太阳。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像风会决定旗子往哪边飘，太阳的作用也会影响彗尾朝向。太空不是充满普通空气，彗尾也不是布旗；太阳风是带电粒子流。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "comet-03",
      "group_id": "comet",
      "category": "space",
      "topic": "彗星",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "comet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "彗星为什么拖着长尾巴？",
          "assistant": "太阳加热使彗星释放气体和尘埃；离子尾主要受太阳风影响，尘埃尾受辐射压力影响，尾巴大体背离太阳。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "彗星一直都有大尾巴吗？",
          "assistant": "不一定。远离太阳时通常活动较弱，显著彗尾往往在更靠近太阳、释放物质较多时出现。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "comet-04",
      "group_id": "comet",
      "category": "space",
      "topic": "彗星",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "comet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "彗星为什么拖着长尾巴？",
          "assistant": "彗星靠近太阳时，冰升华成气体，带出尘埃，太阳的影响让它们形成尾巴。还可以想想：彗星一直都有大尾巴吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "看标出太阳位置的彗星图片，在纸上画太阳到彗星的连线，再比较尾巴方向。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：彗星靠近太阳时，冰升华成气体，带出尘埃，太阳的影响让它们形成尾巴。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "comet-05",
      "group_id": "comet",
      "category": "space",
      "topic": "彗星",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "comet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "尾巴一定在彗星飞行方向的后面吧？",
          "assistant": "不一定。决定尾巴朝向的重要因素是太阳，彗星远离太阳时，尾巴甚至能朝着前进方向。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "看标出太阳位置的彗星图片，在纸上画太阳到彗星的连线，再比较尾巴方向。太空不是充满普通空气，彗尾也不是布旗；太阳风是带电粒子流。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "comet-06",
      "group_id": "comet",
      "category": "space",
      "topic": "彗星",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "comet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "彗星为什么拖着长尾巴？先用一句话说。",
          "assistant": "彗星靠近太阳时，冰升华成气体，带出尘埃，太阳的影响让它们形成尾巴。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "太阳加热使彗星释放气体和尘埃；离子尾主要受太阳风影响，尘埃尾受辐射压力影响，尾巴大体背离太阳。打个比方：像风会决定旗子往哪边飘，太阳的作用也会影响彗尾朝向。太空不是充满普通空气，彗尾也不是布旗；太阳风是带电粒子流。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "comet-07",
      "group_id": "comet",
      "category": "space",
      "topic": "彗星",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "comet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "彗星为什么拖着长尾巴？能打个比方吗？",
          "assistant": "彗星靠近太阳时，冰升华成气体，带出尘埃，太阳的影响让它们形成尾巴。像风会决定旗子往哪边飘，太阳的作用也会影响彗尾朝向。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "太空不是充满普通空气，彗尾也不是布旗；太阳风是带电粒子流。所以要记住的科学解释是：太阳加热使彗星释放气体和尘埃；离子尾主要受太阳风影响，尘埃尾受辐射压力影响，尾巴大体背离太阳。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "comet-08",
      "group_id": "comet",
      "category": "space",
      "topic": "彗星",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "comet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "彗星为什么拖着长尾巴？",
          "assistant": "彗星靠近太阳时，冰升华成气体，带出尘埃，太阳的影响让它们形成尾巴。太阳加热使彗星释放气体和尘埃；离子尾主要受太阳风影响，尘埃尾受辐射压力影响，尾巴大体背离太阳。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "看标出太阳位置的彗星图片，在纸上画太阳到彗星的连线，再比较尾巴方向。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。彗星的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "comet-09",
      "group_id": "comet",
      "category": "space",
      "topic": "彗星",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "comet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "彗星为什么拖着长尾巴？不要考我，也不要反问。",
          "assistant": "太阳加热使彗星释放气体和尘埃；离子尾主要受太阳风影响，尘埃尾受辐射压力影响，尾巴大体背离太阳。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：尾巴一定在彗星飞行方向的后面吧？",
          "assistant": "不一定。决定尾巴朝向的重要因素是太阳，彗星远离太阳时，尾巴甚至能朝着前进方向。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "comet-10",
      "group_id": "comet",
      "category": "space",
      "topic": "彗星",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "comet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "彗星为什么拖着长尾巴？",
          "assistant": "彗星靠近太阳时，冰升华成气体，带出尘埃，太阳的影响让它们形成尾巴。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "彗星一直都有大尾巴吗？",
          "assistant": "不一定。远离太阳时通常活动较弱，显著彗尾往往在更靠近太阳、释放物质较多时出现。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于彗星，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "water-cycle-01",
      "group_id": "water-cycle",
      "category": "earth",
      "topic": "水循环",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "water-cycle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "下过的雨后来去哪儿了？",
          "assistant": "有的流进河里，有的渗进土里，还有的变成水蒸气回到空气中。水在海洋、陆地和大气之间通过蒸发、降水、径流及渗透等过程移动，不会每滴都走同一路线。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "每一滴雨都马上回到原来的云里？",
          "assistant": "不会。有的水可能在地下或冰雪中停留很久，水循环不是每滴水都按同一时刻表绕圈。还可以接着想：水渗进土里就消失了吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "water-cycle-02",
      "group_id": "water-cycle",
      "category": "earth",
      "topic": "水循环",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "water-cycle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "下过的雨后来去哪儿了？",
          "assistant": "水在海洋、陆地和大气之间通过蒸发、降水、径流及渗透等过程移动，不会每滴都走同一路线。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "可以把水的旅行画成有很多岔路的地图，有的路快，有的路慢。水没有旅行计划，也不是每条路都必须走一遍；地图只表示可能的流动。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "water-cycle-03",
      "group_id": "water-cycle",
      "category": "earth",
      "topic": "水循环",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "water-cycle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "下过的雨后来去哪儿了？",
          "assistant": "有的流进河里，有的渗进土里，还有的变成水蒸气回到空气中。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "水渗进土里就消失了吗？",
          "assistant": "没有。它可能留在土壤中、被植物吸收，或继续向下进入地下水，仍然是水循环的一部分。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "water-cycle-04",
      "group_id": "water-cycle",
      "category": "earth",
      "topic": "水循环",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "water-cycle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "下过的雨后来去哪儿了？",
          "assistant": "有的流进河里，有的渗进土里，还有的变成水蒸气回到空气中。还可以想想：水渗进土里就消失了吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "雨停后从安全室内观察地面，隔一段时间画下水洼大小；不要靠近积水深处。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：有的流进河里，有的渗进土里，还有的变成水蒸气回到空气中。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "water-cycle-05",
      "group_id": "water-cycle",
      "category": "earth",
      "topic": "水循环",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "water-cycle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "每一滴雨都马上回到原来的云里？",
          "assistant": "不会。有的水可能在地下或冰雪中停留很久，水循环不是每滴水都按同一时刻表绕圈。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "雨停后从安全室内观察地面，隔一段时间画下水洼大小；不要靠近积水深处。水没有旅行计划，也不是每条路都必须走一遍；地图只表示可能的流动。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "water-cycle-06",
      "group_id": "water-cycle",
      "category": "earth",
      "topic": "水循环",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "water-cycle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "下过的雨后来去哪儿了？先用一句话说。",
          "assistant": "有的流进河里，有的渗进土里，还有的变成水蒸气回到空气中。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "水在海洋、陆地和大气之间通过蒸发、降水、径流及渗透等过程移动，不会每滴都走同一路线。打个比方：可以把水的旅行画成有很多岔路的地图，有的路快，有的路慢。水没有旅行计划，也不是每条路都必须走一遍；地图只表示可能的流动。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "water-cycle-07",
      "group_id": "water-cycle",
      "category": "earth",
      "topic": "水循环",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "water-cycle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "下过的雨后来去哪儿了？能打个比方吗？",
          "assistant": "有的流进河里，有的渗进土里，还有的变成水蒸气回到空气中。可以把水的旅行画成有很多岔路的地图，有的路快，有的路慢。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "水没有旅行计划，也不是每条路都必须走一遍；地图只表示可能的流动。所以要记住的科学解释是：水在海洋、陆地和大气之间通过蒸发、降水、径流及渗透等过程移动，不会每滴都走同一路线。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "water-cycle-08",
      "group_id": "water-cycle",
      "category": "earth",
      "topic": "水循环",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "water-cycle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "下过的雨后来去哪儿了？",
          "assistant": "水在海洋、陆地和大气之间通过蒸发、降水、径流及渗透等过程移动，不会每滴都走同一路线。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "雨停后从安全室内观察地面，隔一段时间画下水洼大小；不要靠近积水深处。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。水循环的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "water-cycle-09",
      "group_id": "water-cycle",
      "category": "earth",
      "topic": "水循环",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "water-cycle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "下过的雨后来去哪儿了？不要考我，也不要反问。",
          "assistant": "有的流进河里，有的渗进土里，还有的变成水蒸气回到空气中。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：每一滴雨都马上回到原来的云里？",
          "assistant": "不会。有的水可能在地下或冰雪中停留很久，水循环不是每滴水都按同一时刻表绕圈。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "water-cycle-10",
      "group_id": "water-cycle",
      "category": "earth",
      "topic": "水循环",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "water-cycle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "下过的雨后来去哪儿了？",
          "assistant": "有的流进河里，有的渗进土里，还有的变成水蒸气回到空气中。水在海洋、陆地和大气之间通过蒸发、降水、径流及渗透等过程移动，不会每滴都走同一路线。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "水渗进土里就消失了吗？",
          "assistant": "没有。它可能留在土壤中、被植物吸收，或继续向下进入地下水，仍然是水循环的一部分。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于水循环，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "cloud-rain-01",
      "group_id": "cloud-rain",
      "category": "earth",
      "topic": "云与雨",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "cloud-rain"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "云看起来轻飘飘，怎么会下雨？",
          "assistant": "云由悬浮的小水滴或冰晶组成；降水粒子经碰并或冰晶生长等过程增大，并非所有云都会下雨。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "云是水蒸气，所以雨是气体掉下来了？",
          "assistant": "看得见的云主要是小水滴或冰晶，看不见的水蒸气是气态水；雨滴不是一团气体直接掉落。还可以接着想：有云就一定会下雨吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "cloud-rain-02",
      "group_id": "cloud-rain",
      "category": "earth",
      "topic": "云与雨",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "cloud-rain"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "云看起来轻飘飘，怎么会下雨？",
          "assistant": "云里有许多很小的水滴或冰晶，它们长大到空气托不住时，就可能落下来。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像很多极小的珠子聚成一片，单颗很小，聚起来我们才看见白白的云。云滴比普通珠子小得多，珠子比方不能说明云为何悬浮或怎样长大。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "cloud-rain-03",
      "group_id": "cloud-rain",
      "category": "earth",
      "topic": "云与雨",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "cloud-rain"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "云看起来轻飘飘，怎么会下雨？",
          "assistant": "云里有许多很小的水滴或冰晶，它们长大到空气托不住时，就可能落下来。云由悬浮的小水滴或冰晶组成；降水粒子经碰并或冰晶生长等过程增大，并非所有云都会下雨。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "有云就一定会下雨吗？",
          "assistant": "不一定。云滴大小、云层厚度、空气运动等条件都有关，有些云里的水滴没有长成能落到地面的雨滴。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "cloud-rain-04",
      "group_id": "cloud-rain",
      "category": "earth",
      "topic": "云与雨",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "cloud-rain"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "云看起来轻飘飘，怎么会下雨？",
          "assistant": "云里有许多很小的水滴或冰晶，它们长大到空气托不住时，就可能落下来。还可以想想：有云就一定会下雨吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在室内看同一天不同时间的天空照片，记录云形和是否下雨；不要雷雨时到室外观察。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：云里有许多很小的水滴或冰晶，它们长大到空气托不住时，就可能落下来。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "cloud-rain-05",
      "group_id": "cloud-rain",
      "category": "earth",
      "topic": "云与雨",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "cloud-rain"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "云是水蒸气，所以雨是气体掉下来了？",
          "assistant": "看得见的云主要是小水滴或冰晶，看不见的水蒸气是气态水；雨滴不是一团气体直接掉落。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在室内看同一天不同时间的天空照片，记录云形和是否下雨；不要雷雨时到室外观察。云滴比普通珠子小得多，珠子比方不能说明云为何悬浮或怎样长大。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "cloud-rain-06",
      "group_id": "cloud-rain",
      "category": "earth",
      "topic": "云与雨",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "cloud-rain"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "云看起来轻飘飘，怎么会下雨？先用一句话说。",
          "assistant": "云里有许多很小的水滴或冰晶，它们长大到空气托不住时，就可能落下来。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "云由悬浮的小水滴或冰晶组成；降水粒子经碰并或冰晶生长等过程增大，并非所有云都会下雨。打个比方：像很多极小的珠子聚成一片，单颗很小，聚起来我们才看见白白的云。云滴比普通珠子小得多，珠子比方不能说明云为何悬浮或怎样长大。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "cloud-rain-07",
      "group_id": "cloud-rain",
      "category": "earth",
      "topic": "云与雨",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "cloud-rain"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "云看起来轻飘飘，怎么会下雨？能打个比方吗？",
          "assistant": "云里有许多很小的水滴或冰晶，它们长大到空气托不住时，就可能落下来。像很多极小的珠子聚成一片，单颗很小，聚起来我们才看见白白的云。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "云滴比普通珠子小得多，珠子比方不能说明云为何悬浮或怎样长大。所以要记住的科学解释是：云由悬浮的小水滴或冰晶组成；降水粒子经碰并或冰晶生长等过程增大，并非所有云都会下雨。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "cloud-rain-08",
      "group_id": "cloud-rain",
      "category": "earth",
      "topic": "云与雨",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "cloud-rain"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "云看起来轻飘飘，怎么会下雨？",
          "assistant": "云里有许多很小的水滴或冰晶，它们长大到空气托不住时，就可能落下来。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在室内看同一天不同时间的天空照片，记录云形和是否下雨；不要雷雨时到室外观察。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。云与雨的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "cloud-rain-09",
      "group_id": "cloud-rain",
      "category": "earth",
      "topic": "云与雨",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "cloud-rain"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "云看起来轻飘飘，怎么会下雨？不要考我，也不要反问。",
          "assistant": "云里有许多很小的水滴或冰晶，它们长大到空气托不住时，就可能落下来。云由悬浮的小水滴或冰晶组成；降水粒子经碰并或冰晶生长等过程增大，并非所有云都会下雨。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：云是水蒸气，所以雨是气体掉下来了？",
          "assistant": "看得见的云主要是小水滴或冰晶，看不见的水蒸气是气态水；雨滴不是一团气体直接掉落。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "cloud-rain-10",
      "group_id": "cloud-rain",
      "category": "earth",
      "topic": "云与雨",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "cloud-rain"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "云看起来轻飘飘，怎么会下雨？",
          "assistant": "云由悬浮的小水滴或冰晶组成；降水粒子经碰并或冰晶生长等过程增大，并非所有云都会下雨。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "有云就一定会下雨吗？",
          "assistant": "不一定。云滴大小、云层厚度、空气运动等条件都有关，有些云里的水滴没有长成能落到地面的雨滴。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于云与雨，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "snow-01",
      "group_id": "snow",
      "category": "earth",
      "topic": "雪花",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "snow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雪花为什么常有六个角？",
          "assistant": "小水分子结成冰晶时，常按有六角特点的方式排列，雪花就在这个基础上长大。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "雪花都是同一张六角贴纸印出来的？",
          "assistant": "六角结构有共同原因，但每片经历的温度和湿度不同，枝杈可能不同，也有并不漂亮对称的雪晶。还可以接着想：我看到一团雪不像六角，是假雪吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "snow-02",
      "group_id": "snow",
      "category": "earth",
      "topic": "雪花",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "snow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雪花为什么常有六个角？",
          "assistant": "小水分子结成冰晶时，常按有六角特点的方式排列，雪花就在这个基础上长大。雪晶的六重对称与冰的晶体结构有关；温度、湿度影响形态，实际雪花也可能破损或不完整。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像都从六条道路向外修建，却沿途长出不同的小路。雪晶没有施工队，分子也不先画图；道路只是帮助理解生长方向。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "snow-03",
      "group_id": "snow",
      "category": "earth",
      "topic": "雪花",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "snow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雪花为什么常有六个角？",
          "assistant": "雪晶的六重对称与冰的晶体结构有关；温度、湿度影响形态，实际雪花也可能破损或不完整。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我看到一团雪不像六角，是假雪吗？",
          "assistant": "不能这样判断。许多雪晶可能粘在一起，或者已经融化、破损，外观不规则不等于是假雪。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "snow-04",
      "group_id": "snow",
      "category": "earth",
      "topic": "雪花",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "snow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雪花为什么常有六个角？",
          "assistant": "小水分子结成冰晶时，常按有六角特点的方式排列，雪花就在这个基础上长大。还可以想想：我看到一团雪不像六角，是假雪吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "查看气象机构的雪晶显微照片，先数主枝，再比较边缘；没有雪也能做这项观察。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：小水分子结成冰晶时，常按有六角特点的方式排列，雪花就在这个基础上长大。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "snow-05",
      "group_id": "snow",
      "category": "earth",
      "topic": "雪花",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "snow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雪花都是同一张六角贴纸印出来的？",
          "assistant": "六角结构有共同原因，但每片经历的温度和湿度不同，枝杈可能不同，也有并不漂亮对称的雪晶。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "查看气象机构的雪晶显微照片，先数主枝，再比较边缘；没有雪也能做这项观察。雪晶没有施工队，分子也不先画图；道路只是帮助理解生长方向。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "snow-06",
      "group_id": "snow",
      "category": "earth",
      "topic": "雪花",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "snow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雪花为什么常有六个角？先用一句话说。",
          "assistant": "小水分子结成冰晶时，常按有六角特点的方式排列，雪花就在这个基础上长大。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "雪晶的六重对称与冰的晶体结构有关；温度、湿度影响形态，实际雪花也可能破损或不完整。打个比方：像都从六条道路向外修建，却沿途长出不同的小路。雪晶没有施工队，分子也不先画图；道路只是帮助理解生长方向。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "snow-07",
      "group_id": "snow",
      "category": "earth",
      "topic": "雪花",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "snow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雪花为什么常有六个角？能打个比方吗？",
          "assistant": "小水分子结成冰晶时，常按有六角特点的方式排列，雪花就在这个基础上长大。像都从六条道路向外修建，却沿途长出不同的小路。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "雪晶没有施工队，分子也不先画图；道路只是帮助理解生长方向。所以要记住的科学解释是：雪晶的六重对称与冰的晶体结构有关；温度、湿度影响形态，实际雪花也可能破损或不完整。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "snow-08",
      "group_id": "snow",
      "category": "earth",
      "topic": "雪花",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "snow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雪花为什么常有六个角？",
          "assistant": "小水分子结成冰晶时，常按有六角特点的方式排列，雪花就在这个基础上长大。雪晶的六重对称与冰的晶体结构有关；温度、湿度影响形态，实际雪花也可能破损或不完整。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "查看气象机构的雪晶显微照片，先数主枝，再比较边缘；没有雪也能做这项观察。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。雪花的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "snow-09",
      "group_id": "snow",
      "category": "earth",
      "topic": "雪花",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "snow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雪花为什么常有六个角？不要考我，也不要反问。",
          "assistant": "雪晶的六重对称与冰的晶体结构有关；温度、湿度影响形态，实际雪花也可能破损或不完整。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：雪花都是同一张六角贴纸印出来的？",
          "assistant": "六角结构有共同原因，但每片经历的温度和湿度不同，枝杈可能不同，也有并不漂亮对称的雪晶。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "snow-10",
      "group_id": "snow",
      "category": "earth",
      "topic": "雪花",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "snow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雪花为什么常有六个角？",
          "assistant": "小水分子结成冰晶时，常按有六角特点的方式排列，雪花就在这个基础上长大。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我看到一团雪不像六角，是假雪吗？",
          "assistant": "不能这样判断。许多雪晶可能粘在一起，或者已经融化、破损，外观不规则不等于是假雪。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于雪花，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "wind-01",
      "group_id": "wind",
      "category": "earth",
      "topic": "风",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "wind"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "看不见空气，风是怎么来的？",
          "assistant": "空气从一个地方移动到另一个地方，我们就感到风。地面受热不均等因素造成气压差，推动空气流动；地球自转和地形也会影响风向。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "树叶一摇，就把风摇出来了吧？",
          "assistant": "树叶能扰动附近空气，但自然界的大风并不是树叶一起摇出的；通常是风先让树叶动起来。还可以接着想：山谷里的风为什么方向会变？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "wind-02",
      "group_id": "wind",
      "category": "earth",
      "topic": "风",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "wind"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "看不见空气，风是怎么来的？",
          "assistant": "地面受热不均等因素造成气压差，推动空气流动；地球自转和地形也会影响风向。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像走廊里的人流，空气也可以整体向某个方向移动，只是我们看不见它。空气不是排队的小人，风也不需要有人指挥；比方不能替代气压差的原因。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "wind-03",
      "group_id": "wind",
      "category": "earth",
      "topic": "风",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "wind"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "看不见空气，风是怎么来的？",
          "assistant": "空气从一个地方移动到另一个地方，我们就感到风。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "山谷里的风为什么方向会变？",
          "assistant": "山坡受热、冷却和地形都会影响空气流动；要结合时间和当地条件判断，不能只套一个固定方向。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "wind-04",
      "group_id": "wind",
      "category": "earth",
      "topic": "风",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "wind"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "看不见空气，风是怎么来的？",
          "assistant": "空气从一个地方移动到另一个地方，我们就感到风。还可以想想：山谷里的风为什么方向会变？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在室内轻轻扇纸扇，比较停扇前后手背的感觉；只用纸扇，不把手伸进电风扇。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：空气从一个地方移动到另一个地方，我们就感到风。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "wind-05",
      "group_id": "wind",
      "category": "earth",
      "topic": "风",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "wind"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "树叶一摇，就把风摇出来了吧？",
          "assistant": "树叶能扰动附近空气，但自然界的大风并不是树叶一起摇出的；通常是风先让树叶动起来。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在室内轻轻扇纸扇，比较停扇前后手背的感觉；只用纸扇，不把手伸进电风扇。空气不是排队的小人，风也不需要有人指挥；比方不能替代气压差的原因。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "wind-06",
      "group_id": "wind",
      "category": "earth",
      "topic": "风",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "wind"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "看不见空气，风是怎么来的？先用一句话说。",
          "assistant": "空气从一个地方移动到另一个地方，我们就感到风。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "地面受热不均等因素造成气压差，推动空气流动；地球自转和地形也会影响风向。打个比方：像走廊里的人流，空气也可以整体向某个方向移动，只是我们看不见它。空气不是排队的小人，风也不需要有人指挥；比方不能替代气压差的原因。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "wind-07",
      "group_id": "wind",
      "category": "earth",
      "topic": "风",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "wind"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "看不见空气，风是怎么来的？能打个比方吗？",
          "assistant": "空气从一个地方移动到另一个地方，我们就感到风。像走廊里的人流，空气也可以整体向某个方向移动，只是我们看不见它。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "空气不是排队的小人，风也不需要有人指挥；比方不能替代气压差的原因。所以要记住的科学解释是：地面受热不均等因素造成气压差，推动空气流动；地球自转和地形也会影响风向。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "wind-08",
      "group_id": "wind",
      "category": "earth",
      "topic": "风",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "wind"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "看不见空气，风是怎么来的？",
          "assistant": "地面受热不均等因素造成气压差，推动空气流动；地球自转和地形也会影响风向。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在室内轻轻扇纸扇，比较停扇前后手背的感觉；只用纸扇，不把手伸进电风扇。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。风的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "wind-09",
      "group_id": "wind",
      "category": "earth",
      "topic": "风",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "wind"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "看不见空气，风是怎么来的？不要考我，也不要反问。",
          "assistant": "空气从一个地方移动到另一个地方，我们就感到风。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：树叶一摇，就把风摇出来了吧？",
          "assistant": "树叶能扰动附近空气，但自然界的大风并不是树叶一起摇出的；通常是风先让树叶动起来。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "wind-10",
      "group_id": "wind",
      "category": "earth",
      "topic": "风",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "wind"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "看不见空气，风是怎么来的？",
          "assistant": "空气从一个地方移动到另一个地方，我们就感到风。地面受热不均等因素造成气压差，推动空气流动；地球自转和地形也会影响风向。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "山谷里的风为什么方向会变？",
          "assistant": "山坡受热、冷却和地形都会影响空气流动；要结合时间和当地条件判断，不能只套一个固定方向。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于风，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "lightning-01",
      "group_id": "lightning",
      "category": "earth",
      "topic": "闪电与雷",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "lightning"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么先看见闪电，后听见雷？",
          "assistant": "闪电放电使附近空气迅速升温膨胀而产生雷声；光和声传播速度不同，造成到达时间差。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "雷声先产生，然后把云震亮了？",
          "assistant": "雷声主要由闪电加热空气引起，不是声音把云震亮；先看到光是因为光传播快。还可以接着想：没听见雷，就能到外面玩吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "lightning-02",
      "group_id": "lightning",
      "category": "earth",
      "topic": "闪电与雷",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "lightning"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么先看见闪电，后听见雷？",
          "assistant": "光跑得比声音快得多，所以远处同一次闪电的亮光通常先到，雷声后到。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像两个速度很不一样的信使，从同一处出发，快的先到。这只是比较到达时间，雷声并不是跟在闪电后面的物体，也不能靠听声保证安全。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "lightning-03",
      "group_id": "lightning",
      "category": "earth",
      "topic": "闪电与雷",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "lightning"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么先看见闪电，后听见雷？",
          "assistant": "光跑得比声音快得多，所以远处同一次闪电的亮光通常先到，雷声后到。闪电放电使附近空气迅速升温膨胀而产生雷声；光和声传播速度不同，造成到达时间差。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "没听见雷，就能到外面玩吗？",
          "assistant": "不能单凭没听见雷判断安全。应听成人安排和当地天气预警，雷暴附近的闪电仍可能危险。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "lightning-04",
      "group_id": "lightning",
      "category": "earth",
      "topic": "闪电与雷",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "lightning"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么先看见闪电，后听见雷？",
          "assistant": "光跑得比声音快得多，所以远处同一次闪电的亮光通常先到，雷声后到。还可以想想：没听见雷，就能到外面玩吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "只在安全室内观看科普录像，留意闪光与雷声；雷雨时不要到窗边或室外做计时实验。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：光跑得比声音快得多，所以远处同一次闪电的亮光通常先到，雷声后到。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "lightning-05",
      "group_id": "lightning",
      "category": "earth",
      "topic": "闪电与雷",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "lightning"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雷声先产生，然后把云震亮了？",
          "assistant": "雷声主要由闪电加热空气引起，不是声音把云震亮；先看到光是因为光传播快。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "只在安全室内观看科普录像，留意闪光与雷声；雷雨时不要到窗边或室外做计时实验。这只是比较到达时间，雷声并不是跟在闪电后面的物体，也不能靠听声保证安全。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "lightning-06",
      "group_id": "lightning",
      "category": "earth",
      "topic": "闪电与雷",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "lightning"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么先看见闪电，后听见雷？先用一句话说。",
          "assistant": "光跑得比声音快得多，所以远处同一次闪电的亮光通常先到，雷声后到。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "闪电放电使附近空气迅速升温膨胀而产生雷声；光和声传播速度不同，造成到达时间差。打个比方：像两个速度很不一样的信使，从同一处出发，快的先到。这只是比较到达时间，雷声并不是跟在闪电后面的物体，也不能靠听声保证安全。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "lightning-07",
      "group_id": "lightning",
      "category": "earth",
      "topic": "闪电与雷",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "lightning"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么先看见闪电，后听见雷？能打个比方吗？",
          "assistant": "光跑得比声音快得多，所以远处同一次闪电的亮光通常先到，雷声后到。像两个速度很不一样的信使，从同一处出发，快的先到。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "这只是比较到达时间，雷声并不是跟在闪电后面的物体，也不能靠听声保证安全。所以要记住的科学解释是：闪电放电使附近空气迅速升温膨胀而产生雷声；光和声传播速度不同，造成到达时间差。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "lightning-08",
      "group_id": "lightning",
      "category": "earth",
      "topic": "闪电与雷",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "lightning"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么先看见闪电，后听见雷？",
          "assistant": "光跑得比声音快得多，所以远处同一次闪电的亮光通常先到，雷声后到。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "只在安全室内观看科普录像，留意闪光与雷声；雷雨时不要到窗边或室外做计时实验。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。闪电与雷的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "lightning-09",
      "group_id": "lightning",
      "category": "earth",
      "topic": "闪电与雷",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "lightning"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么先看见闪电，后听见雷？不要考我，也不要反问。",
          "assistant": "光跑得比声音快得多，所以远处同一次闪电的亮光通常先到，雷声后到。闪电放电使附近空气迅速升温膨胀而产生雷声；光和声传播速度不同，造成到达时间差。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：雷声先产生，然后把云震亮了？",
          "assistant": "雷声主要由闪电加热空气引起，不是声音把云震亮；先看到光是因为光传播快。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "lightning-10",
      "group_id": "lightning",
      "category": "earth",
      "topic": "闪电与雷",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "lightning"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "为什么先看见闪电，后听见雷？",
          "assistant": "闪电放电使附近空气迅速升温膨胀而产生雷声；光和声传播速度不同，造成到达时间差。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "没听见雷，就能到外面玩吗？",
          "assistant": "不能单凭没听见雷判断安全。应听成人安排和当地天气预警，雷暴附近的闪电仍可能危险。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于闪电与雷，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "rainbow-01",
      "group_id": "rainbow",
      "category": "earth",
      "topic": "彩虹",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "rainbow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雨后为什么会出现彩虹？",
          "assistant": "阳光遇到空气里的水滴，一些光转弯、反射后出来，不同颜色分开，我们就可能看见彩虹。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "彩虹是挂在云上的彩色桥？",
          "assistant": "它看起来像桥，却没有能走上去的桥面。它是许多水滴把光送向你眼睛形成的景象。还可以接着想：我跑过去能摸到彩虹的尽头吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "rainbow-02",
      "group_id": "rainbow",
      "category": "earth",
      "topic": "彩虹",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "rainbow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雨后为什么会出现彩虹？",
          "assistant": "阳光遇到空气里的水滴，一些光转弯、反射后出来，不同颜色分开，我们就可能看见彩虹。主虹涉及光进入水滴的折射、内部反射和离开时的折射；不同颜色偏折不同，观察位置影响所见彩虹。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像把混在一起的彩色丝线分开，白光中的不同颜色沿不同方向出来。光不是丝线，颜色也不是水滴涂上的颜料；比喻只表示分开。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "rainbow-03",
      "group_id": "rainbow",
      "category": "earth",
      "topic": "彩虹",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "rainbow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雨后为什么会出现彩虹？",
          "assistant": "主虹涉及光进入水滴的折射、内部反射和离开时的折射；不同颜色偏折不同，观察位置影响所见彩虹。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我跑过去能摸到彩虹的尽头吗？",
          "assistant": "不能像摸桥那样摸到。你移动后，向你眼睛送来彩色光的水滴也会变，彩虹不是固定放在地上的物体。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "rainbow-04",
      "group_id": "rainbow",
      "category": "earth",
      "topic": "彩虹",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "rainbow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雨后为什么会出现彩虹？",
          "assistant": "阳光遇到空气里的水滴，一些光转弯、反射后出来，不同颜色分开，我们就可能看见彩虹。还可以想想：我跑过去能摸到彩虹的尽头吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "看标有太阳、观察者和水滴位置的示意图；太阳通常在观察者身后，不要转身直看太阳。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：阳光遇到空气里的水滴，一些光转弯、反射后出来，不同颜色分开，我们就可能看见彩虹。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "rainbow-05",
      "group_id": "rainbow",
      "category": "earth",
      "topic": "彩虹",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "rainbow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "彩虹是挂在云上的彩色桥？",
          "assistant": "它看起来像桥，却没有能走上去的桥面。它是许多水滴把光送向你眼睛形成的景象。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "看标有太阳、观察者和水滴位置的示意图；太阳通常在观察者身后，不要转身直看太阳。光不是丝线，颜色也不是水滴涂上的颜料；比喻只表示分开。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "rainbow-06",
      "group_id": "rainbow",
      "category": "earth",
      "topic": "彩虹",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "rainbow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雨后为什么会出现彩虹？先用一句话说。",
          "assistant": "阳光遇到空气里的水滴，一些光转弯、反射后出来，不同颜色分开，我们就可能看见彩虹。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "主虹涉及光进入水滴的折射、内部反射和离开时的折射；不同颜色偏折不同，观察位置影响所见彩虹。打个比方：像把混在一起的彩色丝线分开，白光中的不同颜色沿不同方向出来。光不是丝线，颜色也不是水滴涂上的颜料；比喻只表示分开。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "rainbow-07",
      "group_id": "rainbow",
      "category": "earth",
      "topic": "彩虹",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "rainbow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雨后为什么会出现彩虹？能打个比方吗？",
          "assistant": "阳光遇到空气里的水滴，一些光转弯、反射后出来，不同颜色分开，我们就可能看见彩虹。像把混在一起的彩色丝线分开，白光中的不同颜色沿不同方向出来。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "光不是丝线，颜色也不是水滴涂上的颜料；比喻只表示分开。所以要记住的科学解释是：主虹涉及光进入水滴的折射、内部反射和离开时的折射；不同颜色偏折不同，观察位置影响所见彩虹。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "rainbow-08",
      "group_id": "rainbow",
      "category": "earth",
      "topic": "彩虹",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "rainbow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雨后为什么会出现彩虹？",
          "assistant": "阳光遇到空气里的水滴，一些光转弯、反射后出来，不同颜色分开，我们就可能看见彩虹。主虹涉及光进入水滴的折射、内部反射和离开时的折射；不同颜色偏折不同，观察位置影响所见彩虹。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "看标有太阳、观察者和水滴位置的示意图；太阳通常在观察者身后，不要转身直看太阳。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。彩虹的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "rainbow-09",
      "group_id": "rainbow",
      "category": "earth",
      "topic": "彩虹",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "rainbow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雨后为什么会出现彩虹？不要考我，也不要反问。",
          "assistant": "主虹涉及光进入水滴的折射、内部反射和离开时的折射；不同颜色偏折不同，观察位置影响所见彩虹。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：彩虹是挂在云上的彩色桥？",
          "assistant": "它看起来像桥，却没有能走上去的桥面。它是许多水滴把光送向你眼睛形成的景象。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "rainbow-10",
      "group_id": "rainbow",
      "category": "earth",
      "topic": "彩虹",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "rainbow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "雨后为什么会出现彩虹？",
          "assistant": "阳光遇到空气里的水滴，一些光转弯、反射后出来，不同颜色分开，我们就可能看见彩虹。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我跑过去能摸到彩虹的尽头吗？",
          "assistant": "不能像摸桥那样摸到。你移动后，向你眼睛送来彩色光的水滴也会变，彩虹不是固定放在地上的物体。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于彩虹，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "rocks-01",
      "group_id": "rocks",
      "category": "earth",
      "topic": "岩石变化",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "rocks"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石头一直都是原来的样子吗？",
          "assistant": "石头也会改变，只是很多变化比我们的生活慢得多。岩石可通过风化、侵蚀、沉积、受热受压或熔融冷却等过程转变；岩石循环没有唯一的固定顺序。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "石头这么硬，风和水一定拿它没办法？",
          "assistant": "硬不等于永远不变。水、温度变化和生物作用都可能让岩石逐渐破碎或成分改变。还可以接着想：圆石头就一定来自河里吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "rocks-02",
      "group_id": "rocks",
      "category": "earth",
      "topic": "岩石变化",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "rocks"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石头一直都是原来的样子吗？",
          "assistant": "岩石可通过风化、侵蚀、沉积、受热受压或熔融冷却等过程转变；岩石循环没有唯一的固定顺序。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像一本慢慢翻页的地球相册，岩石保存着一些变化的线索。岩石没有真的记事，单看一块外形也不能读出它的全部历史。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "rocks-03",
      "group_id": "rocks",
      "category": "earth",
      "topic": "岩石变化",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "rocks"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石头一直都是原来的样子吗？",
          "assistant": "石头也会改变，只是很多变化比我们的生活慢得多。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "圆石头就一定来自河里吗？",
          "assistant": "不一定。流水能磨圆石头，但其他环境也能造成相似外形，需要更多线索判断来历。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "rocks-04",
      "group_id": "rocks",
      "category": "earth",
      "topic": "岩石变化",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "rocks"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石头一直都是原来的样子吗？",
          "assistant": "石头也会改变，只是很多变化比我们的生活慢得多。还可以想想：圆石头就一定来自河里吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "比较已经捡到的普通小石子照片，记录棱角和表面；不要敲击岩石或去陡坡采样。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：石头也会改变，只是很多变化比我们的生活慢得多。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "rocks-05",
      "group_id": "rocks",
      "category": "earth",
      "topic": "岩石变化",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "rocks"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石头这么硬，风和水一定拿它没办法？",
          "assistant": "硬不等于永远不变。水、温度变化和生物作用都可能让岩石逐渐破碎或成分改变。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "比较已经捡到的普通小石子照片，记录棱角和表面；不要敲击岩石或去陡坡采样。岩石没有真的记事，单看一块外形也不能读出它的全部历史。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "rocks-06",
      "group_id": "rocks",
      "category": "earth",
      "topic": "岩石变化",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "rocks"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石头一直都是原来的样子吗？先用一句话说。",
          "assistant": "石头也会改变，只是很多变化比我们的生活慢得多。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "岩石可通过风化、侵蚀、沉积、受热受压或熔融冷却等过程转变；岩石循环没有唯一的固定顺序。打个比方：像一本慢慢翻页的地球相册，岩石保存着一些变化的线索。岩石没有真的记事，单看一块外形也不能读出它的全部历史。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "rocks-07",
      "group_id": "rocks",
      "category": "earth",
      "topic": "岩石变化",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "rocks"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石头一直都是原来的样子吗？能打个比方吗？",
          "assistant": "石头也会改变，只是很多变化比我们的生活慢得多。像一本慢慢翻页的地球相册，岩石保存着一些变化的线索。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "岩石没有真的记事，单看一块外形也不能读出它的全部历史。所以要记住的科学解释是：岩石可通过风化、侵蚀、沉积、受热受压或熔融冷却等过程转变；岩石循环没有唯一的固定顺序。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "rocks-08",
      "group_id": "rocks",
      "category": "earth",
      "topic": "岩石变化",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "rocks"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石头一直都是原来的样子吗？",
          "assistant": "岩石可通过风化、侵蚀、沉积、受热受压或熔融冷却等过程转变；岩石循环没有唯一的固定顺序。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "比较已经捡到的普通小石子照片，记录棱角和表面；不要敲击岩石或去陡坡采样。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。岩石变化的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "rocks-09",
      "group_id": "rocks",
      "category": "earth",
      "topic": "岩石变化",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "rocks"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石头一直都是原来的样子吗？不要考我，也不要反问。",
          "assistant": "石头也会改变，只是很多变化比我们的生活慢得多。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：石头这么硬，风和水一定拿它没办法？",
          "assistant": "硬不等于永远不变。水、温度变化和生物作用都可能让岩石逐渐破碎或成分改变。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "rocks-10",
      "group_id": "rocks",
      "category": "earth",
      "topic": "岩石变化",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "rocks"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石头一直都是原来的样子吗？",
          "assistant": "石头也会改变，只是很多变化比我们的生活慢得多。岩石可通过风化、侵蚀、沉积、受热受压或熔融冷却等过程转变；岩石循环没有唯一的固定顺序。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "圆石头就一定来自河里吗？",
          "assistant": "不一定。流水能磨圆石头，但其他环境也能造成相似外形，需要更多线索判断来历。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于岩石变化，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "volcano-01",
      "group_id": "volcano",
      "category": "earth",
      "topic": "火山",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "volcano"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "火山为什么会喷出来？",
          "assistant": "岩浆上升与浮力、压力及气体释放等有关；不同岩浆和环境形成不同喷发，并非所有火山都猛烈爆炸。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "地球肚子里装满了空空的火炉吗？",
          "assistant": "地球内部不是一个装满火焰的空壳；岩浆是高温熔融物质，火山喷发也不是煤炭燃烧。还可以接着想：每座山都是睡着的火山吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "volcano-02",
      "group_id": "volcano",
      "category": "earth",
      "topic": "火山",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "volcano"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "火山为什么会喷出来？",
          "assistant": "地下有些熔融岩石和气体，在合适条件下沿裂缝上升，可能喷到地面。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像气泡会影响饮料的流动，岩浆中的气体也会改变喷发过程。饮料模型没有真实岩浆的高温、黏度和压力，不能用摇密封瓶的方法模仿喷发。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "volcano-03",
      "group_id": "volcano",
      "category": "earth",
      "topic": "火山",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "volcano"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "火山为什么会喷出来？",
          "assistant": "地下有些熔融岩石和气体，在合适条件下沿裂缝上升，可能喷到地面。岩浆上升与浮力、压力及气体释放等有关；不同岩浆和环境形成不同喷发，并非所有火山都猛烈爆炸。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "每座山都是睡着的火山吗？",
          "assistant": "不是。山有多种形成方式，判断是否为火山要看岩石、地形和地质记录，不能只看像不像锥形。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "volcano-04",
      "group_id": "volcano",
      "category": "earth",
      "topic": "火山",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "volcano"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "火山为什么会喷出来？",
          "assistant": "地下有些熔融岩石和气体，在合适条件下沿裂缝上升，可能喷到地面。还可以想想：每座山都是睡着的火山吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用正规火山照片比较缓慢熔岩流和喷出火山灰的场面；只看资料，不靠近活火山。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：地下有些熔融岩石和气体，在合适条件下沿裂缝上升，可能喷到地面。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "volcano-05",
      "group_id": "volcano",
      "category": "earth",
      "topic": "火山",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "volcano"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地球肚子里装满了空空的火炉吗？",
          "assistant": "地球内部不是一个装满火焰的空壳；岩浆是高温熔融物质，火山喷发也不是煤炭燃烧。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用正规火山照片比较缓慢熔岩流和喷出火山灰的场面；只看资料，不靠近活火山。饮料模型没有真实岩浆的高温、黏度和压力，不能用摇密封瓶的方法模仿喷发。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "volcano-06",
      "group_id": "volcano",
      "category": "earth",
      "topic": "火山",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "volcano"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "火山为什么会喷出来？先用一句话说。",
          "assistant": "地下有些熔融岩石和气体，在合适条件下沿裂缝上升，可能喷到地面。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "岩浆上升与浮力、压力及气体释放等有关；不同岩浆和环境形成不同喷发，并非所有火山都猛烈爆炸。打个比方：像气泡会影响饮料的流动，岩浆中的气体也会改变喷发过程。饮料模型没有真实岩浆的高温、黏度和压力，不能用摇密封瓶的方法模仿喷发。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "volcano-07",
      "group_id": "volcano",
      "category": "earth",
      "topic": "火山",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "volcano"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "火山为什么会喷出来？能打个比方吗？",
          "assistant": "地下有些熔融岩石和气体，在合适条件下沿裂缝上升，可能喷到地面。像气泡会影响饮料的流动，岩浆中的气体也会改变喷发过程。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "饮料模型没有真实岩浆的高温、黏度和压力，不能用摇密封瓶的方法模仿喷发。所以要记住的科学解释是：岩浆上升与浮力、压力及气体释放等有关；不同岩浆和环境形成不同喷发，并非所有火山都猛烈爆炸。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "volcano-08",
      "group_id": "volcano",
      "category": "earth",
      "topic": "火山",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "volcano"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "火山为什么会喷出来？",
          "assistant": "地下有些熔融岩石和气体，在合适条件下沿裂缝上升，可能喷到地面。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用正规火山照片比较缓慢熔岩流和喷出火山灰的场面；只看资料，不靠近活火山。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。火山的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "volcano-09",
      "group_id": "volcano",
      "category": "earth",
      "topic": "火山",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "volcano"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "火山为什么会喷出来？不要考我，也不要反问。",
          "assistant": "地下有些熔融岩石和气体，在合适条件下沿裂缝上升，可能喷到地面。岩浆上升与浮力、压力及气体释放等有关；不同岩浆和环境形成不同喷发，并非所有火山都猛烈爆炸。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：地球肚子里装满了空空的火炉吗？",
          "assistant": "地球内部不是一个装满火焰的空壳；岩浆是高温熔融物质，火山喷发也不是煤炭燃烧。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "volcano-10",
      "group_id": "volcano",
      "category": "earth",
      "topic": "火山",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "volcano"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "火山为什么会喷出来？",
          "assistant": "岩浆上升与浮力、压力及气体释放等有关；不同岩浆和环境形成不同喷发，并非所有火山都猛烈爆炸。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "每座山都是睡着的火山吗？",
          "assistant": "不是。山有多种形成方式，判断是否为火山要看岩石、地形和地质记录，不能只看像不像锥形。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于火山，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "earthquake-01",
      "group_id": "earthquake",
      "category": "earth",
      "topic": "地震",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "earthquake"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地面为什么会突然摇起来？",
          "assistant": "地下岩石积累的力量突然释放，震动向四周传开，我们就会感到地面摇动。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "看到小狗乱叫，就能知道明天哪里地震？",
          "assistant": "小狗叫有很多原因。单凭这种现象不能可靠判断地震时间和地点，应关注官方信息并学习避险。还可以接着想：地震都发生在同一个深度吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "earthquake-02",
      "group_id": "earthquake",
      "category": "earth",
      "topic": "地震",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "earthquake"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地面为什么会突然摇起来？",
          "assistant": "地下岩石积累的力量突然释放，震动向四周传开，我们就会感到地面摇动。许多地震由断层两侧岩块突然滑动引发；能量以地震波传播，不能按一个动物举动可靠预测具体地震。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像绷着的尺子突然松开会振动，但地下岩层的规模和过程复杂得多。尺子不是断层，演示振动不能用于预测地震；不需要用容易弹飞的东西实验。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "earthquake-03",
      "group_id": "earthquake",
      "category": "earth",
      "topic": "地震",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "earthquake"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地面为什么会突然摇起来？",
          "assistant": "许多地震由断层两侧岩块突然滑动引发；能量以地震波传播，不能按一个动物举动可靠预测具体地震。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "地震都发生在同一个深度吗？",
          "assistant": "不是。不同地震的震源深度不同，震中也只是震源在地表的对应位置，不能把两者混为一谈。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "earthquake-04",
      "group_id": "earthquake",
      "category": "earth",
      "topic": "地震",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "earthquake"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地面为什么会突然摇起来？",
          "assistant": "地下岩石积累的力量突然释放，震动向四周传开，我们就会感到地面摇动。还可以想想：地震都发生在同一个深度吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "观察地震机构发布的地震波记录示意图，找波形何时开始变强；按学校安排参加避险演练。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：地下岩石积累的力量突然释放，震动向四周传开，我们就会感到地面摇动。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "earthquake-05",
      "group_id": "earthquake",
      "category": "earth",
      "topic": "地震",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "earthquake"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "看到小狗乱叫，就能知道明天哪里地震？",
          "assistant": "小狗叫有很多原因。单凭这种现象不能可靠判断地震时间和地点，应关注官方信息并学习避险。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "观察地震机构发布的地震波记录示意图，找波形何时开始变强；按学校安排参加避险演练。尺子不是断层，演示振动不能用于预测地震；不需要用容易弹飞的东西实验。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "earthquake-06",
      "group_id": "earthquake",
      "category": "earth",
      "topic": "地震",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "earthquake"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地面为什么会突然摇起来？先用一句话说。",
          "assistant": "地下岩石积累的力量突然释放，震动向四周传开，我们就会感到地面摇动。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "许多地震由断层两侧岩块突然滑动引发；能量以地震波传播，不能按一个动物举动可靠预测具体地震。打个比方：像绷着的尺子突然松开会振动，但地下岩层的规模和过程复杂得多。尺子不是断层，演示振动不能用于预测地震；不需要用容易弹飞的东西实验。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "earthquake-07",
      "group_id": "earthquake",
      "category": "earth",
      "topic": "地震",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "earthquake"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地面为什么会突然摇起来？能打个比方吗？",
          "assistant": "地下岩石积累的力量突然释放，震动向四周传开，我们就会感到地面摇动。像绷着的尺子突然松开会振动，但地下岩层的规模和过程复杂得多。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "尺子不是断层，演示振动不能用于预测地震；不需要用容易弹飞的东西实验。所以要记住的科学解释是：许多地震由断层两侧岩块突然滑动引发；能量以地震波传播，不能按一个动物举动可靠预测具体地震。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "earthquake-08",
      "group_id": "earthquake",
      "category": "earth",
      "topic": "地震",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "earthquake"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地面为什么会突然摇起来？",
          "assistant": "地下岩石积累的力量突然释放，震动向四周传开，我们就会感到地面摇动。许多地震由断层两侧岩块突然滑动引发；能量以地震波传播，不能按一个动物举动可靠预测具体地震。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "观察地震机构发布的地震波记录示意图，找波形何时开始变强；按学校安排参加避险演练。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。地震的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "earthquake-09",
      "group_id": "earthquake",
      "category": "earth",
      "topic": "地震",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "earthquake"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地面为什么会突然摇起来？不要考我，也不要反问。",
          "assistant": "许多地震由断层两侧岩块突然滑动引发；能量以地震波传播，不能按一个动物举动可靠预测具体地震。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：看到小狗乱叫，就能知道明天哪里地震？",
          "assistant": "小狗叫有很多原因。单凭这种现象不能可靠判断地震时间和地点，应关注官方信息并学习避险。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "earthquake-10",
      "group_id": "earthquake",
      "category": "earth",
      "topic": "地震",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "earthquake"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地面为什么会突然摇起来？",
          "assistant": "地下岩石积累的力量突然释放，震动向四周传开，我们就会感到地面摇动。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "地震都发生在同一个深度吗？",
          "assistant": "不是。不同地震的震源深度不同，震中也只是震源在地表的对应位置，不能把两者混为一谈。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于地震，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "river-01",
      "group_id": "river",
      "category": "earth",
      "topic": "流水侵蚀",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "river"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "河边石头为什么常常圆圆的？",
          "assistant": "流水搬动石头时，石头互相碰撞、摩擦，棱角可能慢慢磨圆。河流能侵蚀、搬运和沉积物质；颗粒大小、流速和距离等影响搬运磨蚀，河里也会有带棱角的新碎石。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "水像剪刀，一下就把石头剪圆了？",
          "assistant": "通常不是一下完成。许多次碰撞和磨蚀积累起来才改变形状，而且不同石头变化速度不同。还可以接着想：河水为什么有时很浑？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "river-02",
      "group_id": "river",
      "category": "earth",
      "topic": "流水侵蚀",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "river"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "河边石头为什么常常圆圆的？",
          "assistant": "河流能侵蚀、搬运和沉积物质；颗粒大小、流速和距离等影响搬运磨蚀，河里也会有带棱角的新碎石。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像铅笔尖用久了变钝，石头的尖角也会在反复作用中改变。写字和流水磨石的条件不同，不能用铅笔变钝的时间推算石头年龄。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "river-03",
      "group_id": "river",
      "category": "earth",
      "topic": "流水侵蚀",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "river"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "河边石头为什么常常圆圆的？",
          "assistant": "流水搬动石头时，石头互相碰撞、摩擦，棱角可能慢慢磨圆。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "河水为什么有时很浑？",
          "assistant": "水里可能悬浮着泥沙等颗粒，雨后搬运的泥沙增多时尤其明显；浑浊也可能有其他原因，不能据此判断能否饮用。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "river-04",
      "group_id": "river",
      "category": "earth",
      "topic": "流水侵蚀",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "river"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "河边石头为什么常常圆圆的？",
          "assistant": "流水搬动石头时，石头互相碰撞、摩擦，棱角可能慢慢磨圆。还可以想想：河水为什么有时很浑？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "比较科普照片中河流上游、下游的沉积物；只看照片，不下河或沿湿滑岸边捡石头。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：流水搬动石头时，石头互相碰撞、摩擦，棱角可能慢慢磨圆。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "river-05",
      "group_id": "river",
      "category": "earth",
      "topic": "流水侵蚀",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "river"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "水像剪刀，一下就把石头剪圆了？",
          "assistant": "通常不是一下完成。许多次碰撞和磨蚀积累起来才改变形状，而且不同石头变化速度不同。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "比较科普照片中河流上游、下游的沉积物；只看照片，不下河或沿湿滑岸边捡石头。写字和流水磨石的条件不同，不能用铅笔变钝的时间推算石头年龄。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "river-06",
      "group_id": "river",
      "category": "earth",
      "topic": "流水侵蚀",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "river"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "河边石头为什么常常圆圆的？先用一句话说。",
          "assistant": "流水搬动石头时，石头互相碰撞、摩擦，棱角可能慢慢磨圆。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "河流能侵蚀、搬运和沉积物质；颗粒大小、流速和距离等影响搬运磨蚀，河里也会有带棱角的新碎石。打个比方：像铅笔尖用久了变钝，石头的尖角也会在反复作用中改变。写字和流水磨石的条件不同，不能用铅笔变钝的时间推算石头年龄。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "river-07",
      "group_id": "river",
      "category": "earth",
      "topic": "流水侵蚀",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "river"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "河边石头为什么常常圆圆的？能打个比方吗？",
          "assistant": "流水搬动石头时，石头互相碰撞、摩擦，棱角可能慢慢磨圆。像铅笔尖用久了变钝，石头的尖角也会在反复作用中改变。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "写字和流水磨石的条件不同，不能用铅笔变钝的时间推算石头年龄。所以要记住的科学解释是：河流能侵蚀、搬运和沉积物质；颗粒大小、流速和距离等影响搬运磨蚀，河里也会有带棱角的新碎石。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "river-08",
      "group_id": "river",
      "category": "earth",
      "topic": "流水侵蚀",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "river"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "河边石头为什么常常圆圆的？",
          "assistant": "河流能侵蚀、搬运和沉积物质；颗粒大小、流速和距离等影响搬运磨蚀，河里也会有带棱角的新碎石。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "比较科普照片中河流上游、下游的沉积物；只看照片，不下河或沿湿滑岸边捡石头。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。流水侵蚀的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "river-09",
      "group_id": "river",
      "category": "earth",
      "topic": "流水侵蚀",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "river"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "河边石头为什么常常圆圆的？不要考我，也不要反问。",
          "assistant": "流水搬动石头时，石头互相碰撞、摩擦，棱角可能慢慢磨圆。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：水像剪刀，一下就把石头剪圆了？",
          "assistant": "通常不是一下完成。许多次碰撞和磨蚀积累起来才改变形状，而且不同石头变化速度不同。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "river-10",
      "group_id": "river",
      "category": "earth",
      "topic": "流水侵蚀",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "river"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "河边石头为什么常常圆圆的？",
          "assistant": "流水搬动石头时，石头互相碰撞、摩擦，棱角可能慢慢磨圆。河流能侵蚀、搬运和沉积物质；颗粒大小、流速和距离等影响搬运磨蚀，河里也会有带棱角的新碎石。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "河水为什么有时很浑？",
          "assistant": "水里可能悬浮着泥沙等颗粒，雨后搬运的泥沙增多时尤其明显；浑浊也可能有其他原因，不能据此判断能否饮用。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于流水侵蚀，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "green-leaf-01",
      "group_id": "green-leaf",
      "category": "life",
      "topic": "绿叶",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "green-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "树叶为什么大多是绿色的？",
          "assistant": "叶绿素参与光合作用，主要吸收红、蓝等波段；叶片颜色还取决于其他色素和叶片结构。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "叶子专门吃绿色的光，所以变绿？",
          "assistant": "常见绿叶反射和透过较多绿光，吸收较多红、蓝光；不能把看到的颜色直接当作吸收最多的颜色。还可以接着想：红叶还能做光合作用吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "green-leaf-02",
      "group_id": "green-leaf",
      "category": "life",
      "topic": "绿叶",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "green-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "树叶为什么大多是绿色的？",
          "assistant": "叶子里常有叶绿素，它吸收一些颜色的光，反射或透过较多绿光，我们就看见绿色。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像一扇让不同颜色通过或被挡下的窗，进入眼睛的光影响我们看到的颜色。叶片不是简单的彩色玻璃，光吸收还参与化学过程；“吃光”只是说法。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "green-leaf-03",
      "group_id": "green-leaf",
      "category": "life",
      "topic": "绿叶",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "green-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "树叶为什么大多是绿色的？",
          "assistant": "叶子里常有叶绿素，它吸收一些颜色的光，反射或透过较多绿光，我们就看见绿色。叶绿素参与光合作用，主要吸收红、蓝等波段；叶片颜色还取决于其他色素和叶片结构。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "红叶还能做光合作用吗？",
          "assistant": "一些红色叶片仍有叶绿素，只是其他色素掩盖了绿色；不能只凭外观颜色断定没有光合作用。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "green-leaf-04",
      "group_id": "green-leaf",
      "category": "life",
      "topic": "绿叶",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "green-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "树叶为什么大多是绿色的？",
          "assistant": "叶子里常有叶绿素，它吸收一些颜色的光，反射或透过较多绿光，我们就看见绿色。还可以想想：红叶还能做光合作用吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "观察同一植物在白色背景前的叶色，找较绿、较浅的部位；不直视太阳，不把叶子放进嘴里。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：叶子里常有叶绿素，它吸收一些颜色的光，反射或透过较多绿光，我们就看见绿色。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "green-leaf-05",
      "group_id": "green-leaf",
      "category": "life",
      "topic": "绿叶",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "green-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "叶子专门吃绿色的光，所以变绿？",
          "assistant": "常见绿叶反射和透过较多绿光，吸收较多红、蓝光；不能把看到的颜色直接当作吸收最多的颜色。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "观察同一植物在白色背景前的叶色，找较绿、较浅的部位；不直视太阳，不把叶子放进嘴里。叶片不是简单的彩色玻璃，光吸收还参与化学过程；“吃光”只是说法。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "green-leaf-06",
      "group_id": "green-leaf",
      "category": "life",
      "topic": "绿叶",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "green-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "树叶为什么大多是绿色的？先用一句话说。",
          "assistant": "叶子里常有叶绿素，它吸收一些颜色的光，反射或透过较多绿光，我们就看见绿色。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "叶绿素参与光合作用，主要吸收红、蓝等波段；叶片颜色还取决于其他色素和叶片结构。打个比方：像一扇让不同颜色通过或被挡下的窗，进入眼睛的光影响我们看到的颜色。叶片不是简单的彩色玻璃，光吸收还参与化学过程；“吃光”只是说法。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "green-leaf-07",
      "group_id": "green-leaf",
      "category": "life",
      "topic": "绿叶",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "green-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "树叶为什么大多是绿色的？能打个比方吗？",
          "assistant": "叶子里常有叶绿素，它吸收一些颜色的光，反射或透过较多绿光，我们就看见绿色。像一扇让不同颜色通过或被挡下的窗，进入眼睛的光影响我们看到的颜色。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "叶片不是简单的彩色玻璃，光吸收还参与化学过程；“吃光”只是说法。所以要记住的科学解释是：叶绿素参与光合作用，主要吸收红、蓝等波段；叶片颜色还取决于其他色素和叶片结构。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "green-leaf-08",
      "group_id": "green-leaf",
      "category": "life",
      "topic": "绿叶",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "green-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "树叶为什么大多是绿色的？",
          "assistant": "叶子里常有叶绿素，它吸收一些颜色的光，反射或透过较多绿光，我们就看见绿色。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "观察同一植物在白色背景前的叶色，找较绿、较浅的部位；不直视太阳，不把叶子放进嘴里。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。绿叶的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "green-leaf-09",
      "group_id": "green-leaf",
      "category": "life",
      "topic": "绿叶",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "green-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "树叶为什么大多是绿色的？不要考我，也不要反问。",
          "assistant": "叶子里常有叶绿素，它吸收一些颜色的光，反射或透过较多绿光，我们就看见绿色。叶绿素参与光合作用，主要吸收红、蓝等波段；叶片颜色还取决于其他色素和叶片结构。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：叶子专门吃绿色的光，所以变绿？",
          "assistant": "常见绿叶反射和透过较多绿光，吸收较多红、蓝光；不能把看到的颜色直接当作吸收最多的颜色。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "green-leaf-10",
      "group_id": "green-leaf",
      "category": "life",
      "topic": "绿叶",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "green-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "树叶为什么大多是绿色的？",
          "assistant": "叶绿素参与光合作用，主要吸收红、蓝等波段；叶片颜色还取决于其他色素和叶片结构。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "红叶还能做光合作用吗？",
          "assistant": "一些红色叶片仍有叶绿素，只是其他色素掩盖了绿色；不能只凭外观颜色断定没有光合作用。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于绿叶，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "photosynthesis-01",
      "group_id": "photosynthesis",
      "category": "life",
      "topic": "光合作用",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "photosynthesis"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "植物不会吃饭，怎么长大？",
          "assistant": "多数绿色植物用光的能量，把水和空气里的二氧化碳做成糖，供自己生长。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "大树的木头全是从土里吸来的？",
          "assistant": "土壤提供水和矿质营养，但树体里很多含碳物质的碳来自空气中的二氧化碳，再经光合作用形成有机物。还可以接着想：植物晚上是不是完全不活动？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "photosynthesis-02",
      "group_id": "photosynthesis",
      "category": "life",
      "topic": "光合作用",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "photosynthesis"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "植物不会吃饭，怎么长大？",
          "assistant": "多数绿色植物用光的能量，把水和空气里的二氧化碳做成糖，供自己生长。光合作用把光能转为化学能；植物也需要矿质营养并进行呼吸，生长材料并非全来自土壤。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "叶子像小厨房，光提供能量，水和二氧化碳是一些原料。叶片没有炉灶和厨师，也不是把阳光当固体食物吞下去。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "photosynthesis-03",
      "group_id": "photosynthesis",
      "category": "life",
      "topic": "光合作用",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "photosynthesis"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "植物不会吃饭，怎么长大？",
          "assistant": "光合作用把光能转为化学能；植物也需要矿质营养并进行呼吸，生长材料并非全来自土壤。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "植物晚上是不是完全不活动？",
          "assistant": "不是。没有光时光合作用受限，但植物仍进行呼吸等生命活动，不是晚上整株关机。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "photosynthesis-04",
      "group_id": "photosynthesis",
      "category": "life",
      "topic": "光合作用",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "photosynthesis"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "植物不会吃饭，怎么长大？",
          "assistant": "多数绿色植物用光的能量，把水和空气里的二氧化碳做成糖，供自己生长。还可以想想：植物晚上是不是完全不活动？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "查看植物生长的连续照片，同时记录光照和浇水条件；不要为了实验长期把家中植物闷在密闭袋里。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：多数绿色植物用光的能量，把水和空气里的二氧化碳做成糖，供自己生长。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "photosynthesis-05",
      "group_id": "photosynthesis",
      "category": "life",
      "topic": "光合作用",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "photosynthesis"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "大树的木头全是从土里吸来的？",
          "assistant": "土壤提供水和矿质营养，但树体里很多含碳物质的碳来自空气中的二氧化碳，再经光合作用形成有机物。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "查看植物生长的连续照片，同时记录光照和浇水条件；不要为了实验长期把家中植物闷在密闭袋里。叶片没有炉灶和厨师，也不是把阳光当固体食物吞下去。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "photosynthesis-06",
      "group_id": "photosynthesis",
      "category": "life",
      "topic": "光合作用",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "photosynthesis"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "植物不会吃饭，怎么长大？先用一句话说。",
          "assistant": "多数绿色植物用光的能量，把水和空气里的二氧化碳做成糖，供自己生长。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "光合作用把光能转为化学能；植物也需要矿质营养并进行呼吸，生长材料并非全来自土壤。打个比方：叶子像小厨房，光提供能量，水和二氧化碳是一些原料。叶片没有炉灶和厨师，也不是把阳光当固体食物吞下去。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "photosynthesis-07",
      "group_id": "photosynthesis",
      "category": "life",
      "topic": "光合作用",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "photosynthesis"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "植物不会吃饭，怎么长大？能打个比方吗？",
          "assistant": "多数绿色植物用光的能量，把水和空气里的二氧化碳做成糖，供自己生长。叶子像小厨房，光提供能量，水和二氧化碳是一些原料。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "叶片没有炉灶和厨师，也不是把阳光当固体食物吞下去。所以要记住的科学解释是：光合作用把光能转为化学能；植物也需要矿质营养并进行呼吸，生长材料并非全来自土壤。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "photosynthesis-08",
      "group_id": "photosynthesis",
      "category": "life",
      "topic": "光合作用",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "photosynthesis"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "植物不会吃饭，怎么长大？",
          "assistant": "多数绿色植物用光的能量，把水和空气里的二氧化碳做成糖，供自己生长。光合作用把光能转为化学能；植物也需要矿质营养并进行呼吸，生长材料并非全来自土壤。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "查看植物生长的连续照片，同时记录光照和浇水条件；不要为了实验长期把家中植物闷在密闭袋里。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。光合作用的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "photosynthesis-09",
      "group_id": "photosynthesis",
      "category": "life",
      "topic": "光合作用",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "photosynthesis"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "植物不会吃饭，怎么长大？不要考我，也不要反问。",
          "assistant": "光合作用把光能转为化学能；植物也需要矿质营养并进行呼吸，生长材料并非全来自土壤。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：大树的木头全是从土里吸来的？",
          "assistant": "土壤提供水和矿质营养，但树体里很多含碳物质的碳来自空气中的二氧化碳，再经光合作用形成有机物。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "photosynthesis-10",
      "group_id": "photosynthesis",
      "category": "life",
      "topic": "光合作用",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "photosynthesis"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "植物不会吃饭，怎么长大？",
          "assistant": "多数绿色植物用光的能量，把水和空气里的二氧化碳做成糖，供自己生长。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "植物晚上是不是完全不活动？",
          "assistant": "不是。没有光时光合作用受限，但植物仍进行呼吸等生命活动，不是晚上整株关机。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于光合作用，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "germination-01",
      "group_id": "germination",
      "category": "life",
      "topic": "种子萌发",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "germination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "小种子怎么钻出一棵苗？",
          "assistant": "种子里已经有幼小植物的起点，条件合适时，它用储存的养分开始生长。种子萌发通常需要适宜水分、温度和氧气，不同植物对光照和休眠解除的要求不同。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "把所有种子泡满一杯水就一定发芽？",
          "assistant": "水很重要，但长期完全浸泡可能缺氧，种子也可能失去活力；不能把“需要水”变成“水越多越好”。还可以接着想：没出芽就说明这粒种子死了吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "germination-02",
      "group_id": "germination",
      "category": "life",
      "topic": "种子萌发",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "germination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "小种子怎么钻出一棵苗？",
          "assistant": "种子萌发通常需要适宜水分、温度和氧气，不同植物对光照和休眠解除的要求不同。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像带着干粮的小旅行者，幼苗刚开始可用种子里储存的养分。种子没有意识，也不是所有种子都同样容易萌发；干粮只是储存养分的比喻。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "germination-03",
      "group_id": "germination",
      "category": "life",
      "topic": "种子萌发",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "germination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "小种子怎么钻出一棵苗？",
          "assistant": "种子里已经有幼小植物的起点，条件合适时，它用储存的养分开始生长。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "没出芽就说明这粒种子死了吗？",
          "assistant": "不一定。可能温度、水分或休眠条件还不合适，也可能种子确实失去活力；需要更多观察，不能一天没动静就定论。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "germination-04",
      "group_id": "germination",
      "category": "life",
      "topic": "种子萌发",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "germination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "小种子怎么钻出一棵苗？",
          "assistant": "种子里已经有幼小植物的起点，条件合适时，它用储存的养分开始生长。还可以想想：没出芽就说明这粒种子死了吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在成人帮助下用未处理的绿豆和湿纸巾做观察，保持湿润但不积水；发霉时请成人处理，不食用实验材料。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：种子里已经有幼小植物的起点，条件合适时，它用储存的养分开始生长。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "germination-05",
      "group_id": "germination",
      "category": "life",
      "topic": "种子萌发",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "germination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "把所有种子泡满一杯水就一定发芽？",
          "assistant": "水很重要，但长期完全浸泡可能缺氧，种子也可能失去活力；不能把“需要水”变成“水越多越好”。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在成人帮助下用未处理的绿豆和湿纸巾做观察，保持湿润但不积水；发霉时请成人处理，不食用实验材料。种子没有意识，也不是所有种子都同样容易萌发；干粮只是储存养分的比喻。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "germination-06",
      "group_id": "germination",
      "category": "life",
      "topic": "种子萌发",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "germination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "小种子怎么钻出一棵苗？先用一句话说。",
          "assistant": "种子里已经有幼小植物的起点，条件合适时，它用储存的养分开始生长。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "种子萌发通常需要适宜水分、温度和氧气，不同植物对光照和休眠解除的要求不同。打个比方：像带着干粮的小旅行者，幼苗刚开始可用种子里储存的养分。种子没有意识，也不是所有种子都同样容易萌发；干粮只是储存养分的比喻。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "germination-07",
      "group_id": "germination",
      "category": "life",
      "topic": "种子萌发",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "germination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "小种子怎么钻出一棵苗？能打个比方吗？",
          "assistant": "种子里已经有幼小植物的起点，条件合适时，它用储存的养分开始生长。像带着干粮的小旅行者，幼苗刚开始可用种子里储存的养分。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "种子没有意识，也不是所有种子都同样容易萌发；干粮只是储存养分的比喻。所以要记住的科学解释是：种子萌发通常需要适宜水分、温度和氧气，不同植物对光照和休眠解除的要求不同。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "germination-08",
      "group_id": "germination",
      "category": "life",
      "topic": "种子萌发",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "germination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "小种子怎么钻出一棵苗？",
          "assistant": "种子萌发通常需要适宜水分、温度和氧气，不同植物对光照和休眠解除的要求不同。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在成人帮助下用未处理的绿豆和湿纸巾做观察，保持湿润但不积水；发霉时请成人处理，不食用实验材料。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。种子萌发的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "germination-09",
      "group_id": "germination",
      "category": "life",
      "topic": "种子萌发",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "germination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "小种子怎么钻出一棵苗？不要考我，也不要反问。",
          "assistant": "种子里已经有幼小植物的起点，条件合适时，它用储存的养分开始生长。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：把所有种子泡满一杯水就一定发芽？",
          "assistant": "水很重要，但长期完全浸泡可能缺氧，种子也可能失去活力；不能把“需要水”变成“水越多越好”。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "germination-10",
      "group_id": "germination",
      "category": "life",
      "topic": "种子萌发",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "germination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "小种子怎么钻出一棵苗？",
          "assistant": "种子里已经有幼小植物的起点，条件合适时，它用储存的养分开始生长。种子萌发通常需要适宜水分、温度和氧气，不同植物对光照和休眠解除的要求不同。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "没出芽就说明这粒种子死了吗？",
          "assistant": "不一定。可能温度、水分或休眠条件还不合适，也可能种子确实失去活力；需要更多观察，不能一天没动静就定论。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于种子萌发，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "roots-01",
      "group_id": "roots",
      "category": "life",
      "topic": "植物的根",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "roots"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "根埋在土里有什么用？",
          "assistant": "根毛增加与土壤接触的表面积，帮助吸收水和矿质离子；根还可能储藏物质，植物并非只靠根获得全部生长材料。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "根是在吃小石头吗？",
          "assistant": "根通常吸收水中溶解的矿质离子，不是把小石头整块吞进去；植物造糖还需要光合作用。还可以接着想：胡萝卜为什么有那么粗的根？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "roots-02",
      "group_id": "roots",
      "category": "life",
      "topic": "植物的根",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "roots"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "根埋在土里有什么用？",
          "assistant": "根帮助植物站稳，还能从周围吸收水和一些养分。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "许多细根和根毛像伸进缝隙的小刷毛，增加接触的地方。根毛不是中空吸管简单抽水，真实吸收还涉及膜和水分移动等过程。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "roots-03",
      "group_id": "roots",
      "category": "life",
      "topic": "植物的根",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "roots"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "根埋在土里有什么用？",
          "assistant": "根帮助植物站稳，还能从周围吸收水和一些养分。根毛增加与土壤接触的表面积，帮助吸收水和矿质离子；根还可能储藏物质，植物并非只靠根获得全部生长材料。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "胡萝卜为什么有那么粗的根？",
          "assistant": "胡萝卜的肉质根能储藏营养物质；根不只有吸收和固定一种任务，不同植物的根形态不同。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "roots-04",
      "group_id": "roots",
      "category": "life",
      "topic": "植物的根",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "roots"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "根埋在土里有什么用？",
          "assistant": "根帮助植物站稳，还能从周围吸收水和一些养分。还可以想想：胡萝卜为什么有那么粗的根？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "观察透明容器中已有幼苗的根，画出主根和细根；不要为看根去拔路边植物。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：根帮助植物站稳，还能从周围吸收水和一些养分。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "roots-05",
      "group_id": "roots",
      "category": "life",
      "topic": "植物的根",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "roots"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "根是在吃小石头吗？",
          "assistant": "根通常吸收水中溶解的矿质离子，不是把小石头整块吞进去；植物造糖还需要光合作用。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "观察透明容器中已有幼苗的根，画出主根和细根；不要为看根去拔路边植物。根毛不是中空吸管简单抽水，真实吸收还涉及膜和水分移动等过程。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "roots-06",
      "group_id": "roots",
      "category": "life",
      "topic": "植物的根",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "roots"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "根埋在土里有什么用？先用一句话说。",
          "assistant": "根帮助植物站稳，还能从周围吸收水和一些养分。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "根毛增加与土壤接触的表面积，帮助吸收水和矿质离子；根还可能储藏物质，植物并非只靠根获得全部生长材料。打个比方：许多细根和根毛像伸进缝隙的小刷毛，增加接触的地方。根毛不是中空吸管简单抽水，真实吸收还涉及膜和水分移动等过程。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "roots-07",
      "group_id": "roots",
      "category": "life",
      "topic": "植物的根",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "roots"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "根埋在土里有什么用？能打个比方吗？",
          "assistant": "根帮助植物站稳，还能从周围吸收水和一些养分。许多细根和根毛像伸进缝隙的小刷毛，增加接触的地方。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "根毛不是中空吸管简单抽水，真实吸收还涉及膜和水分移动等过程。所以要记住的科学解释是：根毛增加与土壤接触的表面积，帮助吸收水和矿质离子；根还可能储藏物质，植物并非只靠根获得全部生长材料。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "roots-08",
      "group_id": "roots",
      "category": "life",
      "topic": "植物的根",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "roots"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "根埋在土里有什么用？",
          "assistant": "根帮助植物站稳，还能从周围吸收水和一些养分。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "观察透明容器中已有幼苗的根，画出主根和细根；不要为看根去拔路边植物。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。植物的根的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "roots-09",
      "group_id": "roots",
      "category": "life",
      "topic": "植物的根",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "roots"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "根埋在土里有什么用？不要考我，也不要反问。",
          "assistant": "根帮助植物站稳，还能从周围吸收水和一些养分。根毛增加与土壤接触的表面积，帮助吸收水和矿质离子；根还可能储藏物质，植物并非只靠根获得全部生长材料。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：根是在吃小石头吗？",
          "assistant": "根通常吸收水中溶解的矿质离子，不是把小石头整块吞进去；植物造糖还需要光合作用。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "roots-10",
      "group_id": "roots",
      "category": "life",
      "topic": "植物的根",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "roots"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "根埋在土里有什么用？",
          "assistant": "根毛增加与土壤接触的表面积，帮助吸收水和矿质离子；根还可能储藏物质，植物并非只靠根获得全部生长材料。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "胡萝卜为什么有那么粗的根？",
          "assistant": "胡萝卜的肉质根能储藏营养物质；根不只有吸收和固定一种任务，不同植物的根形态不同。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于植物的根，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "autumn-leaf-01",
      "group_id": "autumn-leaf",
      "category": "life",
      "topic": "秋叶",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "autumn-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "秋天的叶子怎么变黄、变红？",
          "assistant": "一些树的叶绿素减少后，原来被绿色盖住的颜色显出来，有些叶子还会形成红色色素。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "树叶是被秋天的冷风刷了颜料？",
          "assistant": "风没有给叶片涂色。变化来自叶片里的色素及其含量，天气等条件会影响这个过程。还可以接着想：常绿树就永远不掉叶吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "autumn-leaf-02",
      "group_id": "autumn-leaf",
      "category": "life",
      "topic": "秋叶",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "autumn-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "秋天的叶子怎么变黄、变红？",
          "assistant": "一些树的叶绿素减少后，原来被绿色盖住的颜色显出来，有些叶子还会形成红色色素。日照时长和温度等影响秋叶色素变化；黄色类胡萝卜素常原已存在，花青素可在秋季形成，并非所有树都同样变色。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像绿色幕布慢慢拉开，让一些原有颜色显出来；红色还可能是新形成的。“拉幕布”不能解释所有变红过程，叶子也没有真的分层幕布。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "autumn-leaf-03",
      "group_id": "autumn-leaf",
      "category": "life",
      "topic": "秋叶",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "autumn-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "秋天的叶子怎么变黄、变红？",
          "assistant": "日照时长和温度等影响秋叶色素变化；黄色类胡萝卜素常原已存在，花青素可在秋季形成，并非所有树都同样变色。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "常绿树就永远不掉叶吗？",
          "assistant": "也会换叶，只是往往不像一些落叶树那样在同一季节集中落光，所以看起来长期常绿。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "autumn-leaf-04",
      "group_id": "autumn-leaf",
      "category": "life",
      "topic": "秋叶",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "autumn-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "秋天的叶子怎么变黄、变红？",
          "assistant": "一些树的叶绿素减少后，原来被绿色盖住的颜色显出来，有些叶子还会形成红色色素。还可以想想：常绿树就永远不掉叶吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在安全路线给同一棵树的叶子每周拍照，记录日期；不必采摘叶片。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：一些树的叶绿素减少后，原来被绿色盖住的颜色显出来，有些叶子还会形成红色色素。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "autumn-leaf-05",
      "group_id": "autumn-leaf",
      "category": "life",
      "topic": "秋叶",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "autumn-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "树叶是被秋天的冷风刷了颜料？",
          "assistant": "风没有给叶片涂色。变化来自叶片里的色素及其含量，天气等条件会影响这个过程。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在安全路线给同一棵树的叶子每周拍照，记录日期；不必采摘叶片。“拉幕布”不能解释所有变红过程，叶子也没有真的分层幕布。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "autumn-leaf-06",
      "group_id": "autumn-leaf",
      "category": "life",
      "topic": "秋叶",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "autumn-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "秋天的叶子怎么变黄、变红？先用一句话说。",
          "assistant": "一些树的叶绿素减少后，原来被绿色盖住的颜色显出来，有些叶子还会形成红色色素。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "日照时长和温度等影响秋叶色素变化；黄色类胡萝卜素常原已存在，花青素可在秋季形成，并非所有树都同样变色。打个比方：像绿色幕布慢慢拉开，让一些原有颜色显出来；红色还可能是新形成的。“拉幕布”不能解释所有变红过程，叶子也没有真的分层幕布。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "autumn-leaf-07",
      "group_id": "autumn-leaf",
      "category": "life",
      "topic": "秋叶",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "autumn-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "秋天的叶子怎么变黄、变红？能打个比方吗？",
          "assistant": "一些树的叶绿素减少后，原来被绿色盖住的颜色显出来，有些叶子还会形成红色色素。像绿色幕布慢慢拉开，让一些原有颜色显出来；红色还可能是新形成的。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "“拉幕布”不能解释所有变红过程，叶子也没有真的分层幕布。所以要记住的科学解释是：日照时长和温度等影响秋叶色素变化；黄色类胡萝卜素常原已存在，花青素可在秋季形成，并非所有树都同样变色。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "autumn-leaf-08",
      "group_id": "autumn-leaf",
      "category": "life",
      "topic": "秋叶",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "autumn-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "秋天的叶子怎么变黄、变红？",
          "assistant": "一些树的叶绿素减少后，原来被绿色盖住的颜色显出来，有些叶子还会形成红色色素。日照时长和温度等影响秋叶色素变化；黄色类胡萝卜素常原已存在，花青素可在秋季形成，并非所有树都同样变色。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在安全路线给同一棵树的叶子每周拍照，记录日期；不必采摘叶片。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。秋叶的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "autumn-leaf-09",
      "group_id": "autumn-leaf",
      "category": "life",
      "topic": "秋叶",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "autumn-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "秋天的叶子怎么变黄、变红？不要考我，也不要反问。",
          "assistant": "日照时长和温度等影响秋叶色素变化；黄色类胡萝卜素常原已存在，花青素可在秋季形成，并非所有树都同样变色。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：树叶是被秋天的冷风刷了颜料？",
          "assistant": "风没有给叶片涂色。变化来自叶片里的色素及其含量，天气等条件会影响这个过程。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "autumn-leaf-10",
      "group_id": "autumn-leaf",
      "category": "life",
      "topic": "秋叶",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "autumn-leaf"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "秋天的叶子怎么变黄、变红？",
          "assistant": "一些树的叶绿素减少后，原来被绿色盖住的颜色显出来，有些叶子还会形成红色色素。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "常绿树就永远不掉叶吗？",
          "assistant": "也会换叶，只是往往不像一些落叶树那样在同一季节集中落光，所以看起来长期常绿。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于秋叶，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "pollination-01",
      "group_id": "pollination",
      "category": "life",
      "topic": "传粉",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "pollination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蜜蜂飞到花上是在做什么？",
          "assistant": "蜜蜂常去找花蜜或花粉，也可能顺便把花粉带到另一朵花的合适部位。传粉是花粉从花药到柱头等接受部位的转移；昆虫只是部分植物的传粉方式，传粉不等于立即完成受精或结出果实。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "蜜蜂是为了人类吃水果才忙碌的吗？",
          "assistant": "蜜蜂主要在为自己和群体觅食，携带花粉让一些植物受益；不能把这种作用说成它预先懂得人类需求。还可以接着想：没有蜜蜂，植物就都没有种子了吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "pollination-02",
      "group_id": "pollination",
      "category": "life",
      "topic": "传粉",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "pollination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蜜蜂飞到花上是在做什么？",
          "assistant": "传粉是花粉从花药到柱头等接受部位的转移；昆虫只是部分植物的传粉方式，传粉不等于立即完成受精或结出果实。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像带着粉末的小信使，从一朵花到另一朵花，但并不是有意送信。花粉不是信纸，植物还需要后续过程才能形成种子；也不是每朵花都靠蜜蜂。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "pollination-03",
      "group_id": "pollination",
      "category": "life",
      "topic": "传粉",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "pollination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蜜蜂飞到花上是在做什么？",
          "assistant": "蜜蜂常去找花蜜或花粉，也可能顺便把花粉带到另一朵花的合适部位。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "没有蜜蜂，植物就都没有种子了吗？",
          "assistant": "不是。还有其他动物传粉、风媒传粉和一些自花传粉方式，但蜜蜂等传粉者对许多植物很重要。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "pollination-04",
      "group_id": "pollination",
      "category": "life",
      "topic": "传粉",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "pollination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蜜蜂飞到花上是在做什么？",
          "assistant": "蜜蜂常去找花蜜或花粉，也可能顺便把花粉带到另一朵花的合适部位。还可以想想：没有蜜蜂，植物就都没有种子了吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "和成人在远处安静观察访花昆虫，记录它停在哪些花上；不抓、不追、不靠近蜂巢。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：蜜蜂常去找花蜜或花粉，也可能顺便把花粉带到另一朵花的合适部位。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "pollination-05",
      "group_id": "pollination",
      "category": "life",
      "topic": "传粉",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "pollination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蜜蜂是为了人类吃水果才忙碌的吗？",
          "assistant": "蜜蜂主要在为自己和群体觅食，携带花粉让一些植物受益；不能把这种作用说成它预先懂得人类需求。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "和成人在远处安静观察访花昆虫，记录它停在哪些花上；不抓、不追、不靠近蜂巢。花粉不是信纸，植物还需要后续过程才能形成种子；也不是每朵花都靠蜜蜂。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "pollination-06",
      "group_id": "pollination",
      "category": "life",
      "topic": "传粉",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "pollination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蜜蜂飞到花上是在做什么？先用一句话说。",
          "assistant": "蜜蜂常去找花蜜或花粉，也可能顺便把花粉带到另一朵花的合适部位。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "传粉是花粉从花药到柱头等接受部位的转移；昆虫只是部分植物的传粉方式，传粉不等于立即完成受精或结出果实。打个比方：像带着粉末的小信使，从一朵花到另一朵花，但并不是有意送信。花粉不是信纸，植物还需要后续过程才能形成种子；也不是每朵花都靠蜜蜂。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "pollination-07",
      "group_id": "pollination",
      "category": "life",
      "topic": "传粉",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "pollination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蜜蜂飞到花上是在做什么？能打个比方吗？",
          "assistant": "蜜蜂常去找花蜜或花粉，也可能顺便把花粉带到另一朵花的合适部位。像带着粉末的小信使，从一朵花到另一朵花，但并不是有意送信。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "花粉不是信纸，植物还需要后续过程才能形成种子；也不是每朵花都靠蜜蜂。所以要记住的科学解释是：传粉是花粉从花药到柱头等接受部位的转移；昆虫只是部分植物的传粉方式，传粉不等于立即完成受精或结出果实。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "pollination-08",
      "group_id": "pollination",
      "category": "life",
      "topic": "传粉",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "pollination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蜜蜂飞到花上是在做什么？",
          "assistant": "传粉是花粉从花药到柱头等接受部位的转移；昆虫只是部分植物的传粉方式，传粉不等于立即完成受精或结出果实。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "和成人在远处安静观察访花昆虫，记录它停在哪些花上；不抓、不追、不靠近蜂巢。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。传粉的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "pollination-09",
      "group_id": "pollination",
      "category": "life",
      "topic": "传粉",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "pollination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蜜蜂飞到花上是在做什么？不要考我，也不要反问。",
          "assistant": "蜜蜂常去找花蜜或花粉，也可能顺便把花粉带到另一朵花的合适部位。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：蜜蜂是为了人类吃水果才忙碌的吗？",
          "assistant": "蜜蜂主要在为自己和群体觅食，携带花粉让一些植物受益；不能把这种作用说成它预先懂得人类需求。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "pollination-10",
      "group_id": "pollination",
      "category": "life",
      "topic": "传粉",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "pollination"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蜜蜂飞到花上是在做什么？",
          "assistant": "蜜蜂常去找花蜜或花粉，也可能顺便把花粉带到另一朵花的合适部位。传粉是花粉从花药到柱头等接受部位的转移；昆虫只是部分植物的传粉方式，传粉不等于立即完成受精或结出果实。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "没有蜜蜂，植物就都没有种子了吗？",
          "assistant": "不是。还有其他动物传粉、风媒传粉和一些自花传粉方式，但蜜蜂等传粉者对许多植物很重要。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于传粉，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "butterfly-01",
      "group_id": "butterfly",
      "category": "life",
      "topic": "蝴蝶的一生",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "butterfly"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "毛毛虫怎么变成蝴蝶？",
          "assistant": "蝴蝶经历卵、幼虫、蛹和成虫的完全变态；蛹期有复杂的组织重建，不只是原样长出翅膀。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "蛹就是毛毛虫盖被子睡一觉？",
          "assistant": "外表安静，内部却在发生组织变化和重建；“睡一觉”会漏掉这段重要过程。还可以接着想：所有毛毛虫最后都变成蝴蝶吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "butterfly-02",
      "group_id": "butterfly",
      "category": "life",
      "topic": "蝴蝶的一生",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "butterfly"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "毛毛虫怎么变成蝴蝶？",
          "assistant": "毛毛虫是蝴蝶的幼虫，之后会变成蛹，在蛹里身体逐步发生很大变化，再成为成虫。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像一座外面看着安静、里面正在大改造的房子。昆虫不是房子，组织变化由生物发育过程控制，没有工人在里面拆装。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "butterfly-03",
      "group_id": "butterfly",
      "category": "life",
      "topic": "蝴蝶的一生",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "butterfly"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "毛毛虫怎么变成蝴蝶？",
          "assistant": "毛毛虫是蝴蝶的幼虫，之后会变成蛹，在蛹里身体逐步发生很大变化，再成为成虫。蝴蝶经历卵、幼虫、蛹和成虫的完全变态；蛹期有复杂的组织重建，不只是原样长出翅膀。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "所有毛毛虫最后都变成蝴蝶吗？",
          "assistant": "不是。有些是蛾的幼虫；还要辨认种类，不能只凭“毛茸茸”就认定将来是蝴蝶。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "butterfly-04",
      "group_id": "butterfly",
      "category": "life",
      "topic": "蝴蝶的一生",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "butterfly"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "毛毛虫怎么变成蝴蝶？",
          "assistant": "毛毛虫是蝴蝶的幼虫，之后会变成蛹，在蛹里身体逐步发生很大变化，再成为成虫。还可以想想：所有毛毛虫最后都变成蝴蝶吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "看同一种蝴蝶的生长照片，按卵、幼虫、蛹、成虫排序；不要拆开野外的蛹。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：毛毛虫是蝴蝶的幼虫，之后会变成蛹，在蛹里身体逐步发生很大变化，再成为成虫。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "butterfly-05",
      "group_id": "butterfly",
      "category": "life",
      "topic": "蝴蝶的一生",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "butterfly"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蛹就是毛毛虫盖被子睡一觉？",
          "assistant": "外表安静，内部却在发生组织变化和重建；“睡一觉”会漏掉这段重要过程。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "看同一种蝴蝶的生长照片，按卵、幼虫、蛹、成虫排序；不要拆开野外的蛹。昆虫不是房子，组织变化由生物发育过程控制，没有工人在里面拆装。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "butterfly-06",
      "group_id": "butterfly",
      "category": "life",
      "topic": "蝴蝶的一生",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "butterfly"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "毛毛虫怎么变成蝴蝶？先用一句话说。",
          "assistant": "毛毛虫是蝴蝶的幼虫，之后会变成蛹，在蛹里身体逐步发生很大变化，再成为成虫。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "蝴蝶经历卵、幼虫、蛹和成虫的完全变态；蛹期有复杂的组织重建，不只是原样长出翅膀。打个比方：像一座外面看着安静、里面正在大改造的房子。昆虫不是房子，组织变化由生物发育过程控制，没有工人在里面拆装。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "butterfly-07",
      "group_id": "butterfly",
      "category": "life",
      "topic": "蝴蝶的一生",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "butterfly"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "毛毛虫怎么变成蝴蝶？能打个比方吗？",
          "assistant": "毛毛虫是蝴蝶的幼虫，之后会变成蛹，在蛹里身体逐步发生很大变化，再成为成虫。像一座外面看着安静、里面正在大改造的房子。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "昆虫不是房子，组织变化由生物发育过程控制，没有工人在里面拆装。所以要记住的科学解释是：蝴蝶经历卵、幼虫、蛹和成虫的完全变态；蛹期有复杂的组织重建，不只是原样长出翅膀。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "butterfly-08",
      "group_id": "butterfly",
      "category": "life",
      "topic": "蝴蝶的一生",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "butterfly"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "毛毛虫怎么变成蝴蝶？",
          "assistant": "毛毛虫是蝴蝶的幼虫，之后会变成蛹，在蛹里身体逐步发生很大变化，再成为成虫。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "看同一种蝴蝶的生长照片，按卵、幼虫、蛹、成虫排序；不要拆开野外的蛹。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。蝴蝶的一生的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "butterfly-09",
      "group_id": "butterfly",
      "category": "life",
      "topic": "蝴蝶的一生",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "butterfly"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "毛毛虫怎么变成蝴蝶？不要考我，也不要反问。",
          "assistant": "毛毛虫是蝴蝶的幼虫，之后会变成蛹，在蛹里身体逐步发生很大变化，再成为成虫。蝴蝶经历卵、幼虫、蛹和成虫的完全变态；蛹期有复杂的组织重建，不只是原样长出翅膀。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：蛹就是毛毛虫盖被子睡一觉？",
          "assistant": "外表安静，内部却在发生组织变化和重建；“睡一觉”会漏掉这段重要过程。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "butterfly-10",
      "group_id": "butterfly",
      "category": "life",
      "topic": "蝴蝶的一生",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "butterfly"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "毛毛虫怎么变成蝴蝶？",
          "assistant": "蝴蝶经历卵、幼虫、蛹和成虫的完全变态；蛹期有复杂的组织重建，不只是原样长出翅膀。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "所有毛毛虫最后都变成蝴蝶吗？",
          "assistant": "不是。有些是蛾的幼虫；还要辨认种类，不能只凭“毛茸茸”就认定将来是蝴蝶。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于蝴蝶的一生，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "fungi-01",
      "group_id": "fungi",
      "category": "life",
      "topic": "蘑菇",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "fungi"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蘑菇没有绿叶，靠什么生活？",
          "assistant": "蘑菇属于真菌，常从周围有机物中吸收营养，不靠绿叶做光合作用。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "蘑菇是没有长叶子的蔬菜树？",
          "assistant": "蘑菇是真菌的一部分，不是小树。真菌获得营养的方式与一般绿色植物不同。还可以接着想：长得好看就不会有毒吧？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "fungi-02",
      "group_id": "fungi",
      "category": "life",
      "topic": "蘑菇",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "fungi"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蘑菇没有绿叶，靠什么生活？",
          "assistant": "蘑菇属于真菌，常从周围有机物中吸收营养，不靠绿叶做光合作用。许多常见蘑菇是某些真菌的子实体，菌丝可在基质中生长；真菌可腐生、寄生或共生，不能一概说都分解枯木。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "土里或木头里的菌丝像细细的网，看到的蘑菇只是显眼的一部分。菌丝不是塑料网，也不代表地下每一处都连着同一个蘑菇。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "fungi-03",
      "group_id": "fungi",
      "category": "life",
      "topic": "蘑菇",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "fungi"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蘑菇没有绿叶，靠什么生活？",
          "assistant": "许多常见蘑菇是某些真菌的子实体，菌丝可在基质中生长；真菌可腐生、寄生或共生，不能一概说都分解枯木。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "长得好看就不会有毒吧？",
          "assistant": "不能按颜色、气味或好不好看来判断野生蘑菇安全，普通辨认经验可能出错，不要采食。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "fungi-04",
      "group_id": "fungi",
      "category": "life",
      "topic": "蘑菇",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "fungi"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蘑菇没有绿叶，靠什么生活？",
          "assistant": "蘑菇属于真菌，常从周围有机物中吸收营养，不靠绿叶做光合作用。还可以想想：长得好看就不会有毒吧？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "只看正规图鉴中蘑菇与菌丝的照片；不采、不尝野生蘑菇，也不靠照片自己判断能否食用。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：蘑菇属于真菌，常从周围有机物中吸收营养，不靠绿叶做光合作用。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "fungi-05",
      "group_id": "fungi",
      "category": "life",
      "topic": "蘑菇",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "fungi"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蘑菇是没有长叶子的蔬菜树？",
          "assistant": "蘑菇是真菌的一部分，不是小树。真菌获得营养的方式与一般绿色植物不同。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "只看正规图鉴中蘑菇与菌丝的照片；不采、不尝野生蘑菇，也不靠照片自己判断能否食用。菌丝不是塑料网，也不代表地下每一处都连着同一个蘑菇。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "fungi-06",
      "group_id": "fungi",
      "category": "life",
      "topic": "蘑菇",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "fungi"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蘑菇没有绿叶，靠什么生活？先用一句话说。",
          "assistant": "蘑菇属于真菌，常从周围有机物中吸收营养，不靠绿叶做光合作用。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "许多常见蘑菇是某些真菌的子实体，菌丝可在基质中生长；真菌可腐生、寄生或共生，不能一概说都分解枯木。打个比方：土里或木头里的菌丝像细细的网，看到的蘑菇只是显眼的一部分。菌丝不是塑料网，也不代表地下每一处都连着同一个蘑菇。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "fungi-07",
      "group_id": "fungi",
      "category": "life",
      "topic": "蘑菇",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "fungi"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蘑菇没有绿叶，靠什么生活？能打个比方吗？",
          "assistant": "蘑菇属于真菌，常从周围有机物中吸收营养，不靠绿叶做光合作用。土里或木头里的菌丝像细细的网，看到的蘑菇只是显眼的一部分。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "菌丝不是塑料网，也不代表地下每一处都连着同一个蘑菇。所以要记住的科学解释是：许多常见蘑菇是某些真菌的子实体，菌丝可在基质中生长；真菌可腐生、寄生或共生，不能一概说都分解枯木。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "fungi-08",
      "group_id": "fungi",
      "category": "life",
      "topic": "蘑菇",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "fungi"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蘑菇没有绿叶，靠什么生活？",
          "assistant": "蘑菇属于真菌，常从周围有机物中吸收营养，不靠绿叶做光合作用。许多常见蘑菇是某些真菌的子实体，菌丝可在基质中生长；真菌可腐生、寄生或共生，不能一概说都分解枯木。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "只看正规图鉴中蘑菇与菌丝的照片；不采、不尝野生蘑菇，也不靠照片自己判断能否食用。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。蘑菇的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "fungi-09",
      "group_id": "fungi",
      "category": "life",
      "topic": "蘑菇",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "fungi"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蘑菇没有绿叶，靠什么生活？不要考我，也不要反问。",
          "assistant": "许多常见蘑菇是某些真菌的子实体，菌丝可在基质中生长；真菌可腐生、寄生或共生，不能一概说都分解枯木。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：蘑菇是没有长叶子的蔬菜树？",
          "assistant": "蘑菇是真菌的一部分，不是小树。真菌获得营养的方式与一般绿色植物不同。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "fungi-10",
      "group_id": "fungi",
      "category": "life",
      "topic": "蘑菇",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "fungi"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "蘑菇没有绿叶，靠什么生活？",
          "assistant": "蘑菇属于真菌，常从周围有机物中吸收营养，不靠绿叶做光合作用。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "长得好看就不会有毒吧？",
          "assistant": "不能按颜色、气味或好不好看来判断野生蘑菇安全，普通辨认经验可能出错，不要采食。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于蘑菇，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "decomposition-01",
      "group_id": "decomposition",
      "category": "life",
      "topic": "落叶分解",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "decomposition"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地上那么多落叶，怎么没越堆越高？",
          "assistant": "有些落叶被小动物、真菌和细菌慢慢分解，里面的物质又进入环境。分解者分解有机物，释放部分养分并参与物质循环；分解速度受温度、水分、氧气和材料影响，不会瞬间消失。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "落叶是自己蒸发成空气了？",
          "assistant": "落叶不像水那样直接整体蒸发。它会破碎和被生物分解，物质以多种形式进入土壤、水和空气。还可以接着想：冬天叶子分解也一样快吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "decomposition-02",
      "group_id": "decomposition",
      "category": "life",
      "topic": "落叶分解",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "decomposition"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地上那么多落叶，怎么没越堆越高？",
          "assistant": "分解者分解有机物，释放部分养分并参与物质循环；分解速度受温度、水分、氧气和材料影响，不会瞬间消失。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像自然界的拆解队，把复杂材料变成可继续利用的部分。拆解队没有统一计划，物质变化也不仅是把叶子剪成小片。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "decomposition-03",
      "group_id": "decomposition",
      "category": "life",
      "topic": "落叶分解",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "decomposition"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地上那么多落叶，怎么没越堆越高？",
          "assistant": "有些落叶被小动物、真菌和细菌慢慢分解，里面的物质又进入环境。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "冬天叶子分解也一样快吗？",
          "assistant": "通常温度低时许多分解活动会减慢，但还受湿度和材料影响，不能只看季节就给出固定速度。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "decomposition-04",
      "group_id": "decomposition",
      "category": "life",
      "topic": "落叶分解",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "decomposition"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地上那么多落叶，怎么没越堆越高？",
          "assistant": "有些落叶被小动物、真菌和细菌慢慢分解，里面的物质又进入环境。还可以想想：冬天叶子分解也一样快吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "对同一安全花坛地表每周拍照，比较旧叶的形状；不要翻动腐烂堆或直接接触霉菌。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：有些落叶被小动物、真菌和细菌慢慢分解，里面的物质又进入环境。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "decomposition-05",
      "group_id": "decomposition",
      "category": "life",
      "topic": "落叶分解",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "decomposition"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "落叶是自己蒸发成空气了？",
          "assistant": "落叶不像水那样直接整体蒸发。它会破碎和被生物分解，物质以多种形式进入土壤、水和空气。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "对同一安全花坛地表每周拍照，比较旧叶的形状；不要翻动腐烂堆或直接接触霉菌。拆解队没有统一计划，物质变化也不仅是把叶子剪成小片。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "decomposition-06",
      "group_id": "decomposition",
      "category": "life",
      "topic": "落叶分解",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "decomposition"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地上那么多落叶，怎么没越堆越高？先用一句话说。",
          "assistant": "有些落叶被小动物、真菌和细菌慢慢分解，里面的物质又进入环境。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "分解者分解有机物，释放部分养分并参与物质循环；分解速度受温度、水分、氧气和材料影响，不会瞬间消失。打个比方：像自然界的拆解队，把复杂材料变成可继续利用的部分。拆解队没有统一计划，物质变化也不仅是把叶子剪成小片。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "decomposition-07",
      "group_id": "decomposition",
      "category": "life",
      "topic": "落叶分解",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "decomposition"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地上那么多落叶，怎么没越堆越高？能打个比方吗？",
          "assistant": "有些落叶被小动物、真菌和细菌慢慢分解，里面的物质又进入环境。像自然界的拆解队，把复杂材料变成可继续利用的部分。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "拆解队没有统一计划，物质变化也不仅是把叶子剪成小片。所以要记住的科学解释是：分解者分解有机物，释放部分养分并参与物质循环；分解速度受温度、水分、氧气和材料影响，不会瞬间消失。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "decomposition-08",
      "group_id": "decomposition",
      "category": "life",
      "topic": "落叶分解",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "decomposition"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地上那么多落叶，怎么没越堆越高？",
          "assistant": "分解者分解有机物，释放部分养分并参与物质循环；分解速度受温度、水分、氧气和材料影响，不会瞬间消失。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "对同一安全花坛地表每周拍照，比较旧叶的形状；不要翻动腐烂堆或直接接触霉菌。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。落叶分解的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "decomposition-09",
      "group_id": "decomposition",
      "category": "life",
      "topic": "落叶分解",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "decomposition"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地上那么多落叶，怎么没越堆越高？不要考我，也不要反问。",
          "assistant": "有些落叶被小动物、真菌和细菌慢慢分解，里面的物质又进入环境。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：落叶是自己蒸发成空气了？",
          "assistant": "落叶不像水那样直接整体蒸发。它会破碎和被生物分解，物质以多种形式进入土壤、水和空气。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "decomposition-10",
      "group_id": "decomposition",
      "category": "life",
      "topic": "落叶分解",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "decomposition"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地上那么多落叶，怎么没越堆越高？",
          "assistant": "有些落叶被小动物、真菌和细菌慢慢分解，里面的物质又进入环境。分解者分解有机物，释放部分养分并参与物质循环；分解速度受温度、水分、氧气和材料影响，不会瞬间消失。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "冬天叶子分解也一样快吗？",
          "assistant": "通常温度低时许多分解活动会减慢，但还受湿度和材料影响，不能只看季节就给出固定速度。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于落叶分解，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "food-web-01",
      "group_id": "food-web",
      "category": "life",
      "topic": "食物网",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "food-web"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "少了一种小虫子，会影响别的动物吗？",
          "assistant": "生态系统的取食关系常形成食物网，物种变化的影响取决于替代食物、数量和环境，不能把单一链条当全部生态关系。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "一种虫消失，所有鸟就立刻饿死？",
          "assistant": "不能这样断定。有些鸟可能有别的食物，有些更依赖它；影响需要看具体物种和数量。还可以接着想：人也在食物网里面吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "food-web-02",
      "group_id": "food-web",
      "category": "life",
      "topic": "食物网",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "food-web"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "少了一种小虫子，会影响别的动物吗？",
          "assistant": "可能会。吃它的动物和它吃的东西，都可能受到影响，关系会连着变化。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像一张有很多连接的网，一处变化可能传到别处，但每条连接并不一样强。食物网不是实体绳网，也不能只凭画出的箭头预测所有后果。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "food-web-03",
      "group_id": "food-web",
      "category": "life",
      "topic": "食物网",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "food-web"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "少了一种小虫子，会影响别的动物吗？",
          "assistant": "可能会。吃它的动物和它吃的东西，都可能受到影响，关系会连着变化。生态系统的取食关系常形成食物网，物种变化的影响取决于替代食物、数量和环境，不能把单一链条当全部生态关系。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "人也在食物网里面吗？",
          "assistant": "在。我们的食物来自生物及其生产过程，也受环境影响；人不是站在生态系统之外的观察者。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "food-web-04",
      "group_id": "food-web",
      "category": "life",
      "topic": "食物网",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "food-web"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "少了一种小虫子，会影响别的动物吗？",
          "assistant": "可能会。吃它的动物和它吃的东西，都可能受到影响，关系会连着变化。还可以想想：人也在食物网里面吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用资料里的草、昆虫和鸟画取食关系箭头，标清箭头方向；不捕捉动物来验证谁吃谁。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：可能会。吃它的动物和它吃的东西，都可能受到影响，关系会连着变化。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "food-web-05",
      "group_id": "food-web",
      "category": "life",
      "topic": "食物网",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "food-web"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "一种虫消失，所有鸟就立刻饿死？",
          "assistant": "不能这样断定。有些鸟可能有别的食物，有些更依赖它；影响需要看具体物种和数量。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用资料里的草、昆虫和鸟画取食关系箭头，标清箭头方向；不捕捉动物来验证谁吃谁。食物网不是实体绳网，也不能只凭画出的箭头预测所有后果。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "food-web-06",
      "group_id": "food-web",
      "category": "life",
      "topic": "食物网",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "food-web"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "少了一种小虫子，会影响别的动物吗？先用一句话说。",
          "assistant": "可能会。吃它的动物和它吃的东西，都可能受到影响，关系会连着变化。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "生态系统的取食关系常形成食物网，物种变化的影响取决于替代食物、数量和环境，不能把单一链条当全部生态关系。打个比方：像一张有很多连接的网，一处变化可能传到别处，但每条连接并不一样强。食物网不是实体绳网，也不能只凭画出的箭头预测所有后果。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "food-web-07",
      "group_id": "food-web",
      "category": "life",
      "topic": "食物网",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "food-web"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "少了一种小虫子，会影响别的动物吗？能打个比方吗？",
          "assistant": "可能会。吃它的动物和它吃的东西，都可能受到影响，关系会连着变化。像一张有很多连接的网，一处变化可能传到别处，但每条连接并不一样强。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "食物网不是实体绳网，也不能只凭画出的箭头预测所有后果。所以要记住的科学解释是：生态系统的取食关系常形成食物网，物种变化的影响取决于替代食物、数量和环境，不能把单一链条当全部生态关系。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "food-web-08",
      "group_id": "food-web",
      "category": "life",
      "topic": "食物网",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "food-web"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "少了一种小虫子，会影响别的动物吗？",
          "assistant": "可能会。吃它的动物和它吃的东西，都可能受到影响，关系会连着变化。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用资料里的草、昆虫和鸟画取食关系箭头，标清箭头方向；不捕捉动物来验证谁吃谁。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。食物网的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "food-web-09",
      "group_id": "food-web",
      "category": "life",
      "topic": "食物网",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "food-web"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "少了一种小虫子，会影响别的动物吗？不要考我，也不要反问。",
          "assistant": "可能会。吃它的动物和它吃的东西，都可能受到影响，关系会连着变化。生态系统的取食关系常形成食物网，物种变化的影响取决于替代食物、数量和环境，不能把单一链条当全部生态关系。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：一种虫消失，所有鸟就立刻饿死？",
          "assistant": "不能这样断定。有些鸟可能有别的食物，有些更依赖它；影响需要看具体物种和数量。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "food-web-10",
      "group_id": "food-web",
      "category": "life",
      "topic": "食物网",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "food-web"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "少了一种小虫子，会影响别的动物吗？",
          "assistant": "生态系统的取食关系常形成食物网，物种变化的影响取决于替代食物、数量和环境，不能把单一链条当全部生态关系。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "人也在食物网里面吗？",
          "assistant": "在。我们的食物来自生物及其生产过程，也受环境影响；人不是站在生态系统之外的观察者。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于食物网，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "shadow-01",
      "group_id": "shadow",
      "category": "physics",
      "topic": "影子",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "shadow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "影子为什么跟着我走？",
          "assistant": "你挡住了一部分光，后面的地方比较暗，就形成影子；你移动，挡光的位置也变。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "影子是住在地上的黑色小人？",
          "assistant": "影子不是一个独立的小人或物体，它是光被挡住后出现的较暗区域。还可以接着想：离灯更近，影子一定变大吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "shadow-02",
      "group_id": "shadow",
      "category": "physics",
      "topic": "影子",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "shadow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "影子为什么跟着我走？",
          "assistant": "你挡住了一部分光，后面的地方比较暗，就形成影子；你移动，挡光的位置也变。光在均匀介质中近似沿直线传播；光源、遮挡物与接收面的相对位置决定影子的位置和大小。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像在亮地板上留下一块没被照亮的空位，空位会随着挡光的人移动。影子不是涂在地面的黑颜料，没有能抓起来的身体。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "shadow-03",
      "group_id": "shadow",
      "category": "physics",
      "topic": "影子",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "shadow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "影子为什么跟着我走？",
          "assistant": "光在均匀介质中近似沿直线传播；光源、遮挡物与接收面的相对位置决定影子的位置和大小。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "离灯更近，影子一定变大吗？",
          "assistant": "在灯和接收面固定、物体位于两者之间的简单情形下，物体靠近点状光源，投在接收面上的影子通常变大；换了布置要重新判断。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "shadow-04",
      "group_id": "shadow",
      "category": "physics",
      "topic": "影子",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "shadow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "影子为什么跟着我走？",
          "assistant": "你挡住了一部分光，后面的地方比较暗，就形成影子；你移动，挡光的位置也变。还可以想想：离灯更近，影子一定变大吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用普通台灯、玩具和白纸，移动玩具并比较影子；不直看强灯，也不照太阳。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：你挡住了一部分光，后面的地方比较暗，就形成影子；你移动，挡光的位置也变。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "shadow-05",
      "group_id": "shadow",
      "category": "physics",
      "topic": "影子",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "shadow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "影子是住在地上的黑色小人？",
          "assistant": "影子不是一个独立的小人或物体，它是光被挡住后出现的较暗区域。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用普通台灯、玩具和白纸，移动玩具并比较影子；不直看强灯，也不照太阳。影子不是涂在地面的黑颜料，没有能抓起来的身体。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "shadow-06",
      "group_id": "shadow",
      "category": "physics",
      "topic": "影子",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "shadow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "影子为什么跟着我走？先用一句话说。",
          "assistant": "你挡住了一部分光，后面的地方比较暗，就形成影子；你移动，挡光的位置也变。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "光在均匀介质中近似沿直线传播；光源、遮挡物与接收面的相对位置决定影子的位置和大小。打个比方：像在亮地板上留下一块没被照亮的空位，空位会随着挡光的人移动。影子不是涂在地面的黑颜料，没有能抓起来的身体。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "shadow-07",
      "group_id": "shadow",
      "category": "physics",
      "topic": "影子",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "shadow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "影子为什么跟着我走？能打个比方吗？",
          "assistant": "你挡住了一部分光，后面的地方比较暗，就形成影子；你移动，挡光的位置也变。像在亮地板上留下一块没被照亮的空位，空位会随着挡光的人移动。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "影子不是涂在地面的黑颜料，没有能抓起来的身体。所以要记住的科学解释是：光在均匀介质中近似沿直线传播；光源、遮挡物与接收面的相对位置决定影子的位置和大小。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "shadow-08",
      "group_id": "shadow",
      "category": "physics",
      "topic": "影子",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "shadow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "影子为什么跟着我走？",
          "assistant": "你挡住了一部分光，后面的地方比较暗，就形成影子；你移动，挡光的位置也变。光在均匀介质中近似沿直线传播；光源、遮挡物与接收面的相对位置决定影子的位置和大小。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用普通台灯、玩具和白纸，移动玩具并比较影子；不直看强灯，也不照太阳。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。影子的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "shadow-09",
      "group_id": "shadow",
      "category": "physics",
      "topic": "影子",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "shadow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "影子为什么跟着我走？不要考我，也不要反问。",
          "assistant": "光在均匀介质中近似沿直线传播；光源、遮挡物与接收面的相对位置决定影子的位置和大小。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：影子是住在地上的黑色小人？",
          "assistant": "影子不是一个独立的小人或物体，它是光被挡住后出现的较暗区域。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "shadow-10",
      "group_id": "shadow",
      "category": "physics",
      "topic": "影子",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "shadow"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "影子为什么跟着我走？",
          "assistant": "你挡住了一部分光，后面的地方比较暗，就形成影子；你移动，挡光的位置也变。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "离灯更近，影子一定变大吗？",
          "assistant": "在灯和接收面固定、物体位于两者之间的简单情形下，物体靠近点状光源，投在接收面上的影子通常变大；换了布置要重新判断。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于影子，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "mirror-01",
      "group_id": "mirror",
      "category": "physics",
      "topic": "镜面反射",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "mirror"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "镜子为什么能照出我？",
          "assistant": "你身上的光照到镜面，反射后进入眼睛，我们就看见像。平面镜形成虚像，反射遵循反射角等于入射角；像不是镜子后面真实存在的另一个人。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "镜子里面真的藏了一个我？",
          "assistant": "没有另一个人。眼睛接收到反射光，感觉光从镜子后方来，于是看到了像。还可以接着想：镜子为什么不保留我昨天的样子？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "mirror-02",
      "group_id": "mirror",
      "category": "physics",
      "topic": "镜面反射",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "mirror"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "镜子为什么能照出我？",
          "assistant": "平面镜形成虚像，反射遵循反射角等于入射角；像不是镜子后面真实存在的另一个人。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像球碰到光滑边界后改变方向，光也会在镜面上改变传播方向。光不是小皮球，不能把碰球的全部过程套给反射；镜像位置还要根据光路理解。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "mirror-03",
      "group_id": "mirror",
      "category": "physics",
      "topic": "镜面反射",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "mirror"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "镜子为什么能照出我？",
          "assistant": "你身上的光照到镜面，反射后进入眼睛，我们就看见像。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "镜子为什么不保留我昨天的样子？",
          "assistant": "普通镜子反射当前到来的光，不像相机把图像记录下来，所以不会存住昨天的像。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "mirror-04",
      "group_id": "mirror",
      "category": "physics",
      "topic": "镜面反射",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "mirror"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "镜子为什么能照出我？",
          "assistant": "你身上的光照到镜面，反射后进入眼睛，我们就看见像。还可以想想：镜子为什么不保留我昨天的样子？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用安全的防碎镜观察自己举左手，再看看真实手和像的对应位置；不拆镜、不把光反到眼睛。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：你身上的光照到镜面，反射后进入眼睛，我们就看见像。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "mirror-05",
      "group_id": "mirror",
      "category": "physics",
      "topic": "镜面反射",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "mirror"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "镜子里面真的藏了一个我？",
          "assistant": "没有另一个人。眼睛接收到反射光，感觉光从镜子后方来，于是看到了像。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用安全的防碎镜观察自己举左手，再看看真实手和像的对应位置；不拆镜、不把光反到眼睛。光不是小皮球，不能把碰球的全部过程套给反射；镜像位置还要根据光路理解。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "mirror-06",
      "group_id": "mirror",
      "category": "physics",
      "topic": "镜面反射",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "mirror"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "镜子为什么能照出我？先用一句话说。",
          "assistant": "你身上的光照到镜面，反射后进入眼睛，我们就看见像。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "平面镜形成虚像，反射遵循反射角等于入射角；像不是镜子后面真实存在的另一个人。打个比方：像球碰到光滑边界后改变方向，光也会在镜面上改变传播方向。光不是小皮球，不能把碰球的全部过程套给反射；镜像位置还要根据光路理解。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "mirror-07",
      "group_id": "mirror",
      "category": "physics",
      "topic": "镜面反射",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "mirror"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "镜子为什么能照出我？能打个比方吗？",
          "assistant": "你身上的光照到镜面，反射后进入眼睛，我们就看见像。像球碰到光滑边界后改变方向，光也会在镜面上改变传播方向。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "光不是小皮球，不能把碰球的全部过程套给反射；镜像位置还要根据光路理解。所以要记住的科学解释是：平面镜形成虚像，反射遵循反射角等于入射角；像不是镜子后面真实存在的另一个人。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "mirror-08",
      "group_id": "mirror",
      "category": "physics",
      "topic": "镜面反射",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "mirror"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "镜子为什么能照出我？",
          "assistant": "平面镜形成虚像，反射遵循反射角等于入射角；像不是镜子后面真实存在的另一个人。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用安全的防碎镜观察自己举左手，再看看真实手和像的对应位置；不拆镜、不把光反到眼睛。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。镜面反射的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "mirror-09",
      "group_id": "mirror",
      "category": "physics",
      "topic": "镜面反射",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "mirror"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "镜子为什么能照出我？不要考我，也不要反问。",
          "assistant": "你身上的光照到镜面，反射后进入眼睛，我们就看见像。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：镜子里面真的藏了一个我？",
          "assistant": "没有另一个人。眼睛接收到反射光，感觉光从镜子后方来，于是看到了像。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "mirror-10",
      "group_id": "mirror",
      "category": "physics",
      "topic": "镜面反射",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "mirror"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "镜子为什么能照出我？",
          "assistant": "你身上的光照到镜面，反射后进入眼睛，我们就看见像。平面镜形成虚像，反射遵循反射角等于入射角；像不是镜子后面真实存在的另一个人。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "镜子为什么不保留我昨天的样子？",
          "assistant": "普通镜子反射当前到来的光，不像相机把图像记录下来，所以不会存住昨天的像。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于镜面反射，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "refraction-01",
      "group_id": "refraction",
      "category": "physics",
      "topic": "折射",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "refraction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "筷子放水里怎么像折断了？",
          "assistant": "光在不同介质间斜射时通常发生折射，来自水下物体的光路改变造成视位置变化；垂直入射时方向可不变。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "水把筷子真的掰弯了？",
          "assistant": "可以把筷子拿出来查看，它通常还是直的。变化的是光进入眼睛的路线，并非筷子被水折断。还可以接着想：从正上方看也和侧面一样弯吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "refraction-02",
      "group_id": "refraction",
      "category": "physics",
      "topic": "折射",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "refraction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "筷子放水里怎么像折断了？",
          "assistant": "光从水进入空气时会改变方向，我们看到的水下部分位置有了偏移，筷子其实没断。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像隔着一扇会改变光路的窗看东西，看到的位置不一定就是实际位置。水不是把整幅画平移的玻璃贴纸，偏移会随角度变化。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "refraction-03",
      "group_id": "refraction",
      "category": "physics",
      "topic": "折射",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "refraction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "筷子放水里怎么像折断了？",
          "assistant": "光从水进入空气时会改变方向，我们看到的水下部分位置有了偏移，筷子其实没断。光在不同介质间斜射时通常发生折射，来自水下物体的光路改变造成视位置变化；垂直入射时方向可不变。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "从正上方看也和侧面一样弯吗？",
          "assistant": "不一定。观察角度影响光路，接近垂直方向与斜着看会有不同效果。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "refraction-04",
      "group_id": "refraction",
      "category": "physics",
      "topic": "折射",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "refraction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "筷子放水里怎么像折断了？",
          "assistant": "光从水进入空气时会改变方向，我们看到的水下部分位置有了偏移，筷子其实没断。还可以想想：从正上方看也和侧面一样弯吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用透明塑料杯装水，放入一根直吸管，从侧面看，再取出来比较；水不要洒到电器旁。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：光从水进入空气时会改变方向，我们看到的水下部分位置有了偏移，筷子其实没断。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "refraction-05",
      "group_id": "refraction",
      "category": "physics",
      "topic": "折射",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "refraction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "水把筷子真的掰弯了？",
          "assistant": "可以把筷子拿出来查看，它通常还是直的。变化的是光进入眼睛的路线，并非筷子被水折断。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用透明塑料杯装水，放入一根直吸管，从侧面看，再取出来比较；水不要洒到电器旁。水不是把整幅画平移的玻璃贴纸，偏移会随角度变化。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "refraction-06",
      "group_id": "refraction",
      "category": "physics",
      "topic": "折射",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "refraction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "筷子放水里怎么像折断了？先用一句话说。",
          "assistant": "光从水进入空气时会改变方向，我们看到的水下部分位置有了偏移，筷子其实没断。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "光在不同介质间斜射时通常发生折射，来自水下物体的光路改变造成视位置变化；垂直入射时方向可不变。打个比方：像隔着一扇会改变光路的窗看东西，看到的位置不一定就是实际位置。水不是把整幅画平移的玻璃贴纸，偏移会随角度变化。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "refraction-07",
      "group_id": "refraction",
      "category": "physics",
      "topic": "折射",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "refraction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "筷子放水里怎么像折断了？能打个比方吗？",
          "assistant": "光从水进入空气时会改变方向，我们看到的水下部分位置有了偏移，筷子其实没断。像隔着一扇会改变光路的窗看东西，看到的位置不一定就是实际位置。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "水不是把整幅画平移的玻璃贴纸，偏移会随角度变化。所以要记住的科学解释是：光在不同介质间斜射时通常发生折射，来自水下物体的光路改变造成视位置变化；垂直入射时方向可不变。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "refraction-08",
      "group_id": "refraction",
      "category": "physics",
      "topic": "折射",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "refraction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "筷子放水里怎么像折断了？",
          "assistant": "光从水进入空气时会改变方向，我们看到的水下部分位置有了偏移，筷子其实没断。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用透明塑料杯装水，放入一根直吸管，从侧面看，再取出来比较；水不要洒到电器旁。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。折射的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "refraction-09",
      "group_id": "refraction",
      "category": "physics",
      "topic": "折射",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "refraction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "筷子放水里怎么像折断了？不要考我，也不要反问。",
          "assistant": "光从水进入空气时会改变方向，我们看到的水下部分位置有了偏移，筷子其实没断。光在不同介质间斜射时通常发生折射，来自水下物体的光路改变造成视位置变化；垂直入射时方向可不变。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：水把筷子真的掰弯了？",
          "assistant": "可以把筷子拿出来查看，它通常还是直的。变化的是光进入眼睛的路线，并非筷子被水折断。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "refraction-10",
      "group_id": "refraction",
      "category": "physics",
      "topic": "折射",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "refraction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "筷子放水里怎么像折断了？",
          "assistant": "光在不同介质间斜射时通常发生折射，来自水下物体的光路改变造成视位置变化；垂直入射时方向可不变。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "从正上方看也和侧面一样弯吗？",
          "assistant": "不一定。观察角度影响光路，接近垂直方向与斜着看会有不同效果。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于折射，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "sound-01",
      "group_id": "sound",
      "category": "physics",
      "topic": "声音振动",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "sound"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "尺子拨一下为什么会响？",
          "assistant": "伸出桌边的尺子来回动，带着附近空气振动，声音就传到耳朵。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "拨得越用力，声音一定越高？",
          "assistant": "更用力通常让振动幅度变大、声音更响；音高更多和振动快慢有关，不能把响和高混在一起。还可以接着想：在完全没有空气的地方也能这样传声音吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "sound-02",
      "group_id": "sound",
      "category": "physics",
      "topic": "声音振动",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "sound"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "尺子拨一下为什么会响？",
          "assistant": "伸出桌边的尺子来回动，带着附近空气振动，声音就传到耳朵。发声体振动产生声波，声波通过介质传播；频率主要影响音高，振幅与响度有关，但听感也受其他条件影响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像一排人传递轻轻的推挤，扰动能传开，并非每个人都跑到终点。空气分子不是人，声波传递也不是把同一团空气从尺子送到耳朵。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "sound-03",
      "group_id": "sound",
      "category": "physics",
      "topic": "声音振动",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "sound"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "尺子拨一下为什么会响？",
          "assistant": "发声体振动产生声波，声波通过介质传播；频率主要影响音高，振幅与响度有关，但听感也受其他条件影响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "在完全没有空气的地方也能这样传声音吗？",
          "assistant": "真空没有传播普通机械声波所需的介质；如果通过固体接触，声音可以沿固体传播，那是另一条路径。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "sound-04",
      "group_id": "sound",
      "category": "physics",
      "topic": "声音振动",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "sound"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "尺子拨一下为什么会响？",
          "assistant": "伸出桌边的尺子来回动，带着附近空气振动，声音就传到耳朵。还可以想想：在完全没有空气的地方也能这样传声音吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "把不易折断的塑料尺压在桌边，轻拨伸出的一小段，改变伸出长度；避开脸部，不用金属薄片。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：伸出桌边的尺子来回动，带着附近空气振动，声音就传到耳朵。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "sound-05",
      "group_id": "sound",
      "category": "physics",
      "topic": "声音振动",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "sound"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "拨得越用力，声音一定越高？",
          "assistant": "更用力通常让振动幅度变大、声音更响；音高更多和振动快慢有关，不能把响和高混在一起。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "把不易折断的塑料尺压在桌边，轻拨伸出的一小段，改变伸出长度；避开脸部，不用金属薄片。空气分子不是人，声波传递也不是把同一团空气从尺子送到耳朵。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "sound-06",
      "group_id": "sound",
      "category": "physics",
      "topic": "声音振动",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "sound"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "尺子拨一下为什么会响？先用一句话说。",
          "assistant": "伸出桌边的尺子来回动，带着附近空气振动，声音就传到耳朵。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "发声体振动产生声波，声波通过介质传播；频率主要影响音高，振幅与响度有关，但听感也受其他条件影响。打个比方：像一排人传递轻轻的推挤，扰动能传开，并非每个人都跑到终点。空气分子不是人，声波传递也不是把同一团空气从尺子送到耳朵。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "sound-07",
      "group_id": "sound",
      "category": "physics",
      "topic": "声音振动",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "sound"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "尺子拨一下为什么会响？能打个比方吗？",
          "assistant": "伸出桌边的尺子来回动，带着附近空气振动，声音就传到耳朵。像一排人传递轻轻的推挤，扰动能传开，并非每个人都跑到终点。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "空气分子不是人，声波传递也不是把同一团空气从尺子送到耳朵。所以要记住的科学解释是：发声体振动产生声波，声波通过介质传播；频率主要影响音高，振幅与响度有关，但听感也受其他条件影响。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "sound-08",
      "group_id": "sound",
      "category": "physics",
      "topic": "声音振动",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "sound"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "尺子拨一下为什么会响？",
          "assistant": "伸出桌边的尺子来回动，带着附近空气振动，声音就传到耳朵。发声体振动产生声波，声波通过介质传播；频率主要影响音高，振幅与响度有关，但听感也受其他条件影响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "把不易折断的塑料尺压在桌边，轻拨伸出的一小段，改变伸出长度；避开脸部，不用金属薄片。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。声音振动的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "sound-09",
      "group_id": "sound",
      "category": "physics",
      "topic": "声音振动",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "sound"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "尺子拨一下为什么会响？不要考我，也不要反问。",
          "assistant": "发声体振动产生声波，声波通过介质传播；频率主要影响音高，振幅与响度有关，但听感也受其他条件影响。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：拨得越用力，声音一定越高？",
          "assistant": "更用力通常让振动幅度变大、声音更响；音高更多和振动快慢有关，不能把响和高混在一起。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "sound-10",
      "group_id": "sound",
      "category": "physics",
      "topic": "声音振动",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "sound"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "尺子拨一下为什么会响？",
          "assistant": "伸出桌边的尺子来回动，带着附近空气振动，声音就传到耳朵。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "在完全没有空气的地方也能这样传声音吗？",
          "assistant": "真空没有传播普通机械声波所需的介质；如果通过固体接触，声音可以沿固体传播，那是另一条路径。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于声音振动，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "echo-01",
      "group_id": "echo",
      "category": "physics",
      "topic": "回声",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "echo"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "山洞里为什么像有人重复我的话？",
          "assistant": "声音碰到一些表面反射回来，回来得足够晚，我们就可能听成第二遍。可分辨回声取决于反射声与原声的时间差及强弱；小房间的反射可能混在一起形成混响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "山洞里藏着一个学我说话的人？",
          "assistant": "不一定有人。你发出的声音沿路返回，就可能听起来像有人重复；不能仅凭回声断定有另一人。还可以接着想：卧室也有反射，为什么听不到清楚第二遍？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "echo-02",
      "group_id": "echo",
      "category": "physics",
      "topic": "回声",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "echo"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "山洞里为什么像有人重复我的话？",
          "assistant": "可分辨回声取决于反射声与原声的时间差及强弱；小房间的反射可能混在一起形成混响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像球碰墙后返回，声波也可能在表面反射回来。声波不是实体球，墙面材料、形状和距离都会改变反射效果。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "echo-03",
      "group_id": "echo",
      "category": "physics",
      "topic": "回声",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "echo"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "山洞里为什么像有人重复我的话？",
          "assistant": "声音碰到一些表面反射回来，回来得足够晚，我们就可能听成第二遍。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "卧室也有反射，为什么听不到清楚第二遍？",
          "assistant": "反射可能来得很快，和原声混在一起；家具、布料还会吸收或分散一部分声能。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "echo-04",
      "group_id": "echo",
      "category": "physics",
      "topic": "回声",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "echo"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "山洞里为什么像有人重复我的话？",
          "assistant": "声音碰到一些表面反射回来，回来得足够晚，我们就可能听成第二遍。还可以想想：卧室也有反射，为什么听不到清楚第二遍？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在成人带领的安全空旷室内轻拍一次手，听余音；不进入山洞，不在楼梯边或道路旁试喊。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：声音碰到一些表面反射回来，回来得足够晚，我们就可能听成第二遍。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "echo-05",
      "group_id": "echo",
      "category": "physics",
      "topic": "回声",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "echo"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "山洞里藏着一个学我说话的人？",
          "assistant": "不一定有人。你发出的声音沿路返回，就可能听起来像有人重复；不能仅凭回声断定有另一人。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在成人带领的安全空旷室内轻拍一次手，听余音；不进入山洞，不在楼梯边或道路旁试喊。声波不是实体球，墙面材料、形状和距离都会改变反射效果。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "echo-06",
      "group_id": "echo",
      "category": "physics",
      "topic": "回声",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "echo"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "山洞里为什么像有人重复我的话？先用一句话说。",
          "assistant": "声音碰到一些表面反射回来，回来得足够晚，我们就可能听成第二遍。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "可分辨回声取决于反射声与原声的时间差及强弱；小房间的反射可能混在一起形成混响。打个比方：像球碰墙后返回，声波也可能在表面反射回来。声波不是实体球，墙面材料、形状和距离都会改变反射效果。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "echo-07",
      "group_id": "echo",
      "category": "physics",
      "topic": "回声",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "echo"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "山洞里为什么像有人重复我的话？能打个比方吗？",
          "assistant": "声音碰到一些表面反射回来，回来得足够晚，我们就可能听成第二遍。像球碰墙后返回，声波也可能在表面反射回来。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "声波不是实体球，墙面材料、形状和距离都会改变反射效果。所以要记住的科学解释是：可分辨回声取决于反射声与原声的时间差及强弱；小房间的反射可能混在一起形成混响。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "echo-08",
      "group_id": "echo",
      "category": "physics",
      "topic": "回声",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "echo"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "山洞里为什么像有人重复我的话？",
          "assistant": "可分辨回声取决于反射声与原声的时间差及强弱；小房间的反射可能混在一起形成混响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在成人带领的安全空旷室内轻拍一次手，听余音；不进入山洞，不在楼梯边或道路旁试喊。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。回声的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "echo-09",
      "group_id": "echo",
      "category": "physics",
      "topic": "回声",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "echo"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "山洞里为什么像有人重复我的话？不要考我，也不要反问。",
          "assistant": "声音碰到一些表面反射回来，回来得足够晚，我们就可能听成第二遍。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：山洞里藏着一个学我说话的人？",
          "assistant": "不一定有人。你发出的声音沿路返回，就可能听起来像有人重复；不能仅凭回声断定有另一人。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "echo-10",
      "group_id": "echo",
      "category": "physics",
      "topic": "回声",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "echo"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "山洞里为什么像有人重复我的话？",
          "assistant": "声音碰到一些表面反射回来，回来得足够晚，我们就可能听成第二遍。可分辨回声取决于反射声与原声的时间差及强弱；小房间的反射可能混在一起形成混响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "卧室也有反射，为什么听不到清楚第二遍？",
          "assistant": "反射可能来得很快，和原声混在一起；家具、布料还会吸收或分散一部分声能。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于回声，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "friction-01",
      "group_id": "friction",
      "category": "physics",
      "topic": "摩擦",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "friction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "鞋底为什么要有花纹？",
          "assistant": "摩擦与材料、表面状况和受力等有关；鞋底花纹效果依环境而定，不能简单说越粗糙就一定越防滑。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "只要花纹深，冰上也肯定不会滑？",
          "assistant": "不能保证。冰、水、鞋底材料和走路方式都会影响，花纹不是任何地面的防滑魔法。还可以接着想：摩擦都是坏事吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "friction-02",
      "group_id": "friction",
      "category": "physics",
      "topic": "摩擦",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "friction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "鞋底为什么要有花纹？",
          "assistant": "鞋底和地面之间的作用能帮助我们站稳，合适花纹还可能帮助排水和抓地。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像两种表面接触时存在“拦住相对滑动”的作用，但不只有小齿互相卡住一种原因。摩擦机制比齿轮啮合复杂，不能只凭表面看着粗不粗判断大小。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "friction-03",
      "group_id": "friction",
      "category": "physics",
      "topic": "摩擦",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "friction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "鞋底为什么要有花纹？",
          "assistant": "鞋底和地面之间的作用能帮助我们站稳，合适花纹还可能帮助排水和抓地。摩擦与材料、表面状况和受力等有关；鞋底花纹效果依环境而定，不能简单说越粗糙就一定越防滑。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "摩擦都是坏事吗？",
          "assistant": "不是。它让鞋底抓地、铅笔留下字迹；机器里有时又要减少它带来的发热和磨损，要看用途。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "friction-04",
      "group_id": "friction",
      "category": "physics",
      "topic": "摩擦",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "friction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "鞋底为什么要有花纹？",
          "assistant": "鞋底和地面之间的作用能帮助我们站稳，合适花纹还可能帮助排水和抓地。还可以想想：摩擦都是坏事吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "把同一个空纸盒轻推过干桌面和布面，比较手感；不要自己在湿地、冰面试滑。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：鞋底和地面之间的作用能帮助我们站稳，合适花纹还可能帮助排水和抓地。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "friction-05",
      "group_id": "friction",
      "category": "physics",
      "topic": "摩擦",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "friction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "只要花纹深，冰上也肯定不会滑？",
          "assistant": "不能保证。冰、水、鞋底材料和走路方式都会影响，花纹不是任何地面的防滑魔法。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "把同一个空纸盒轻推过干桌面和布面，比较手感；不要自己在湿地、冰面试滑。摩擦机制比齿轮啮合复杂，不能只凭表面看着粗不粗判断大小。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "friction-06",
      "group_id": "friction",
      "category": "physics",
      "topic": "摩擦",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "friction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "鞋底为什么要有花纹？先用一句话说。",
          "assistant": "鞋底和地面之间的作用能帮助我们站稳，合适花纹还可能帮助排水和抓地。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "摩擦与材料、表面状况和受力等有关；鞋底花纹效果依环境而定，不能简单说越粗糙就一定越防滑。打个比方：像两种表面接触时存在“拦住相对滑动”的作用，但不只有小齿互相卡住一种原因。摩擦机制比齿轮啮合复杂，不能只凭表面看着粗不粗判断大小。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "friction-07",
      "group_id": "friction",
      "category": "physics",
      "topic": "摩擦",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "friction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "鞋底为什么要有花纹？能打个比方吗？",
          "assistant": "鞋底和地面之间的作用能帮助我们站稳，合适花纹还可能帮助排水和抓地。像两种表面接触时存在“拦住相对滑动”的作用，但不只有小齿互相卡住一种原因。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "摩擦机制比齿轮啮合复杂，不能只凭表面看着粗不粗判断大小。所以要记住的科学解释是：摩擦与材料、表面状况和受力等有关；鞋底花纹效果依环境而定，不能简单说越粗糙就一定越防滑。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "friction-08",
      "group_id": "friction",
      "category": "physics",
      "topic": "摩擦",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "friction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "鞋底为什么要有花纹？",
          "assistant": "鞋底和地面之间的作用能帮助我们站稳，合适花纹还可能帮助排水和抓地。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "把同一个空纸盒轻推过干桌面和布面，比较手感；不要自己在湿地、冰面试滑。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。摩擦的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "friction-09",
      "group_id": "friction",
      "category": "physics",
      "topic": "摩擦",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "friction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "鞋底为什么要有花纹？不要考我，也不要反问。",
          "assistant": "鞋底和地面之间的作用能帮助我们站稳，合适花纹还可能帮助排水和抓地。摩擦与材料、表面状况和受力等有关；鞋底花纹效果依环境而定，不能简单说越粗糙就一定越防滑。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：只要花纹深，冰上也肯定不会滑？",
          "assistant": "不能保证。冰、水、鞋底材料和走路方式都会影响，花纹不是任何地面的防滑魔法。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "friction-10",
      "group_id": "friction",
      "category": "physics",
      "topic": "摩擦",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "friction"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "鞋底为什么要有花纹？",
          "assistant": "摩擦与材料、表面状况和受力等有关；鞋底花纹效果依环境而定，不能简单说越粗糙就一定越防滑。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "摩擦都是坏事吗？",
          "assistant": "不是。它让鞋底抓地、铅笔留下字迹；机器里有时又要减少它带来的发热和磨损，要看用途。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于摩擦，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "buoyancy-01",
      "group_id": "buoyancy",
      "category": "physics",
      "topic": "浮力",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "buoyancy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "那么重的轮船为什么不沉？",
          "assistant": "船做成中空的样子，能排开很多水，水对它的向上作用可以托住整艘船。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "重东西一定沉，轻东西一定浮？",
          "assistant": "只看总重量不够。一小块实心钢可能沉，一艘中空钢船却能排开更多水，获得足够浮力。还可以接着想：船里进水后为什么危险？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "buoyancy-02",
      "group_id": "buoyancy",
      "category": "physics",
      "topic": "浮力",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "buoyancy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "那么重的轮船为什么不沉？",
          "assistant": "船做成中空的样子，能排开很多水，水对它的向上作用可以托住整艘船。浮力等于排开流体的重力；船体加空气的整体平均密度可低于水，进水会改变浮沉条件。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像水给船提供向上的托举，但这个托举来自水压差，不是水有手。浮力不是只在水面才有，完全浸在水中的物体也受到浮力。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "buoyancy-03",
      "group_id": "buoyancy",
      "category": "physics",
      "topic": "浮力",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "buoyancy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "那么重的轮船为什么不沉？",
          "assistant": "浮力等于排开流体的重力；船体加空气的整体平均密度可低于水，进水会改变浮沉条件。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "船里进水后为什么危险？",
          "assistant": "进水会增加需要承托的重量，也可能减少有效排水容积，破坏原本浮力与重力的平衡。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "buoyancy-04",
      "group_id": "buoyancy",
      "category": "physics",
      "topic": "浮力",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "buoyancy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "那么重的轮船为什么不沉？",
          "assistant": "船做成中空的样子，能排开很多水，水对它的向上作用可以托住整艘船。还可以想想：船里进水后为什么危险？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在浅水盆用同一块橡皮泥比较实心团和小碗形状，旁边铺毛巾；不把小物件放入口中。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：船做成中空的样子，能排开很多水，水对它的向上作用可以托住整艘船。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "buoyancy-05",
      "group_id": "buoyancy",
      "category": "physics",
      "topic": "浮力",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "buoyancy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "重东西一定沉，轻东西一定浮？",
          "assistant": "只看总重量不够。一小块实心钢可能沉，一艘中空钢船却能排开更多水，获得足够浮力。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在浅水盆用同一块橡皮泥比较实心团和小碗形状，旁边铺毛巾；不把小物件放入口中。浮力不是只在水面才有，完全浸在水中的物体也受到浮力。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "buoyancy-06",
      "group_id": "buoyancy",
      "category": "physics",
      "topic": "浮力",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "buoyancy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "那么重的轮船为什么不沉？先用一句话说。",
          "assistant": "船做成中空的样子，能排开很多水，水对它的向上作用可以托住整艘船。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "浮力等于排开流体的重力；船体加空气的整体平均密度可低于水，进水会改变浮沉条件。打个比方：像水给船提供向上的托举，但这个托举来自水压差，不是水有手。浮力不是只在水面才有，完全浸在水中的物体也受到浮力。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "buoyancy-07",
      "group_id": "buoyancy",
      "category": "physics",
      "topic": "浮力",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "buoyancy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "那么重的轮船为什么不沉？能打个比方吗？",
          "assistant": "船做成中空的样子，能排开很多水，水对它的向上作用可以托住整艘船。像水给船提供向上的托举，但这个托举来自水压差，不是水有手。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "浮力不是只在水面才有，完全浸在水中的物体也受到浮力。所以要记住的科学解释是：浮力等于排开流体的重力；船体加空气的整体平均密度可低于水，进水会改变浮沉条件。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "buoyancy-08",
      "group_id": "buoyancy",
      "category": "physics",
      "topic": "浮力",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "buoyancy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "那么重的轮船为什么不沉？",
          "assistant": "船做成中空的样子，能排开很多水，水对它的向上作用可以托住整艘船。浮力等于排开流体的重力；船体加空气的整体平均密度可低于水，进水会改变浮沉条件。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在浅水盆用同一块橡皮泥比较实心团和小碗形状，旁边铺毛巾；不把小物件放入口中。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。浮力的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "buoyancy-09",
      "group_id": "buoyancy",
      "category": "physics",
      "topic": "浮力",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "buoyancy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "那么重的轮船为什么不沉？不要考我，也不要反问。",
          "assistant": "浮力等于排开流体的重力；船体加空气的整体平均密度可低于水，进水会改变浮沉条件。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：重东西一定沉，轻东西一定浮？",
          "assistant": "只看总重量不够。一小块实心钢可能沉，一艘中空钢船却能排开更多水，获得足够浮力。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "buoyancy-10",
      "group_id": "buoyancy",
      "category": "physics",
      "topic": "浮力",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "buoyancy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "那么重的轮船为什么不沉？",
          "assistant": "船做成中空的样子，能排开很多水，水对它的向上作用可以托住整艘船。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "船里进水后为什么危险？",
          "assistant": "进水会增加需要承托的重量，也可能减少有效排水容积，破坏原本浮力与重力的平衡。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于浮力，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "melting-01",
      "group_id": "melting",
      "category": "physics",
      "topic": "冰融化",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "melting"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "冰块为什么会变成水？",
          "assistant": "冰从周围得到能量，组成它的水分子不再被固定在原来的排列中，就变成液态水。熔化是固态转为液态的过程；冰融化需要吸收能量，液态水和冰由同一种水分子组成。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "冰化了就变成另一种东西，不是水了？",
          "assistant": "冰和液态水都是水，只是状态和分子排列方式不同，不是变成了一种新化学物质。还可以接着想：冰放在很冷的地方也会马上融化吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "melting-02",
      "group_id": "melting",
      "category": "physics",
      "topic": "冰融化",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "melting"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "冰块为什么会变成水？",
          "assistant": "熔化是固态转为液态的过程；冰融化需要吸收能量，液态水和冰由同一种水分子组成。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像原来较固定站队的人开始能互相走动，但大家还是原来的人。水分子不是站队的小人，液体也不是每个分子完全不受其他分子影响。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "melting-03",
      "group_id": "melting",
      "category": "physics",
      "topic": "冰融化",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "melting"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "冰块为什么会变成水？",
          "assistant": "冰从周围得到能量，组成它的水分子不再被固定在原来的排列中，就变成液态水。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "冰放在很冷的地方也会马上融化吗？",
          "assistant": "不会。是否融化取决于周围条件和能量交换；不能只因时间过去就断定一定化水。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "melting-04",
      "group_id": "melting",
      "category": "physics",
      "topic": "冰融化",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "melting"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "冰块为什么会变成水？",
          "assistant": "冰从周围得到能量，组成它的水分子不再被固定在原来的排列中，就变成液态水。还可以想想：冰放在很冷的地方也会马上融化吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "把一小块冰放在塑料碟里，隔几分钟画大小变化，擦干水；不舔实验材料，不用火加热。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：冰从周围得到能量，组成它的水分子不再被固定在原来的排列中，就变成液态水。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "melting-05",
      "group_id": "melting",
      "category": "physics",
      "topic": "冰融化",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "melting"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "冰化了就变成另一种东西，不是水了？",
          "assistant": "冰和液态水都是水，只是状态和分子排列方式不同，不是变成了一种新化学物质。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "把一小块冰放在塑料碟里，隔几分钟画大小变化，擦干水；不舔实验材料，不用火加热。水分子不是站队的小人，液体也不是每个分子完全不受其他分子影响。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "melting-06",
      "group_id": "melting",
      "category": "physics",
      "topic": "冰融化",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "melting"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "冰块为什么会变成水？先用一句话说。",
          "assistant": "冰从周围得到能量，组成它的水分子不再被固定在原来的排列中，就变成液态水。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "熔化是固态转为液态的过程；冰融化需要吸收能量，液态水和冰由同一种水分子组成。打个比方：像原来较固定站队的人开始能互相走动，但大家还是原来的人。水分子不是站队的小人，液体也不是每个分子完全不受其他分子影响。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "melting-07",
      "group_id": "melting",
      "category": "physics",
      "topic": "冰融化",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "melting"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "冰块为什么会变成水？能打个比方吗？",
          "assistant": "冰从周围得到能量，组成它的水分子不再被固定在原来的排列中，就变成液态水。像原来较固定站队的人开始能互相走动，但大家还是原来的人。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "水分子不是站队的小人，液体也不是每个分子完全不受其他分子影响。所以要记住的科学解释是：熔化是固态转为液态的过程；冰融化需要吸收能量，液态水和冰由同一种水分子组成。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "melting-08",
      "group_id": "melting",
      "category": "physics",
      "topic": "冰融化",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "melting"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "冰块为什么会变成水？",
          "assistant": "熔化是固态转为液态的过程；冰融化需要吸收能量，液态水和冰由同一种水分子组成。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "把一小块冰放在塑料碟里，隔几分钟画大小变化，擦干水；不舔实验材料，不用火加热。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。冰融化的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "melting-09",
      "group_id": "melting",
      "category": "physics",
      "topic": "冰融化",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "melting"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "冰块为什么会变成水？不要考我，也不要反问。",
          "assistant": "冰从周围得到能量，组成它的水分子不再被固定在原来的排列中，就变成液态水。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：冰化了就变成另一种东西，不是水了？",
          "assistant": "冰和液态水都是水，只是状态和分子排列方式不同，不是变成了一种新化学物质。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "melting-10",
      "group_id": "melting",
      "category": "physics",
      "topic": "冰融化",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "melting"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "冰块为什么会变成水？",
          "assistant": "冰从周围得到能量，组成它的水分子不再被固定在原来的排列中，就变成液态水。熔化是固态转为液态的过程；冰融化需要吸收能量，液态水和冰由同一种水分子组成。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "冰放在很冷的地方也会马上融化吗？",
          "assistant": "不会。是否融化取决于周围条件和能量交换；不能只因时间过去就断定一定化水。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于冰融化，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "evaporation-01",
      "group_id": "evaporation",
      "category": "physics",
      "topic": "蒸发",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "evaporation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "湿衣服没烧开，怎么就干了？",
          "assistant": "蒸发发生在液体表面，可在沸点以下进行；温度、湿度、空气流动和表面积影响速率。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "只有冒白气时水才会蒸发？",
          "assistant": "水蒸气通常看不见，常见白雾是小水滴。衣服不冒白雾也可以在蒸发。还可以接着想：潮湿天气衣服为什么常干得慢？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "evaporation-02",
      "group_id": "evaporation",
      "category": "physics",
      "topic": "蒸发",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "evaporation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "湿衣服没烧开，怎么就干了？",
          "assistant": "水表面的一些水分子能离开液体进入空气，所以水不用烧开也会慢慢减少。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像一些伙伴从人群边缘离开，表面的水分子也可能离开液体。水分子不是决定去旅行，离开液体与分子运动和能量有关。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "evaporation-03",
      "group_id": "evaporation",
      "category": "physics",
      "topic": "蒸发",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "evaporation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "湿衣服没烧开，怎么就干了？",
          "assistant": "水表面的一些水分子能离开液体进入空气，所以水不用烧开也会慢慢减少。蒸发发生在液体表面，可在沸点以下进行；温度、湿度、空气流动和表面积影响速率。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "潮湿天气衣服为什么常干得慢？",
          "assistant": "周围空气湿度较高时，蒸发形成的净失水通常较慢；还要一起考虑温度、风和衣服厚薄。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "evaporation-04",
      "group_id": "evaporation",
      "category": "physics",
      "topic": "蒸发",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "evaporation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "湿衣服没烧开，怎么就干了？",
          "assistant": "水表面的一些水分子能离开液体进入空气，所以水不用烧开也会慢慢减少。还可以想想：潮湿天气衣服为什么常干得慢？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "把两块同样湿的小布分别摊开、折起，放在同一通风处比较干燥时间；不放到电暖器上。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：水表面的一些水分子能离开液体进入空气，所以水不用烧开也会慢慢减少。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "evaporation-05",
      "group_id": "evaporation",
      "category": "physics",
      "topic": "蒸发",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "evaporation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "只有冒白气时水才会蒸发？",
          "assistant": "水蒸气通常看不见，常见白雾是小水滴。衣服不冒白雾也可以在蒸发。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "把两块同样湿的小布分别摊开、折起，放在同一通风处比较干燥时间；不放到电暖器上。水分子不是决定去旅行，离开液体与分子运动和能量有关。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "evaporation-06",
      "group_id": "evaporation",
      "category": "physics",
      "topic": "蒸发",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "evaporation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "湿衣服没烧开，怎么就干了？先用一句话说。",
          "assistant": "水表面的一些水分子能离开液体进入空气，所以水不用烧开也会慢慢减少。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "蒸发发生在液体表面，可在沸点以下进行；温度、湿度、空气流动和表面积影响速率。打个比方：像一些伙伴从人群边缘离开，表面的水分子也可能离开液体。水分子不是决定去旅行，离开液体与分子运动和能量有关。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "evaporation-07",
      "group_id": "evaporation",
      "category": "physics",
      "topic": "蒸发",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "evaporation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "湿衣服没烧开，怎么就干了？能打个比方吗？",
          "assistant": "水表面的一些水分子能离开液体进入空气，所以水不用烧开也会慢慢减少。像一些伙伴从人群边缘离开，表面的水分子也可能离开液体。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "水分子不是决定去旅行，离开液体与分子运动和能量有关。所以要记住的科学解释是：蒸发发生在液体表面，可在沸点以下进行；温度、湿度、空气流动和表面积影响速率。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "evaporation-08",
      "group_id": "evaporation",
      "category": "physics",
      "topic": "蒸发",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "evaporation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "湿衣服没烧开，怎么就干了？",
          "assistant": "水表面的一些水分子能离开液体进入空气，所以水不用烧开也会慢慢减少。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "把两块同样湿的小布分别摊开、折起，放在同一通风处比较干燥时间；不放到电暖器上。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。蒸发的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "evaporation-09",
      "group_id": "evaporation",
      "category": "physics",
      "topic": "蒸发",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "evaporation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "湿衣服没烧开，怎么就干了？不要考我，也不要反问。",
          "assistant": "水表面的一些水分子能离开液体进入空气，所以水不用烧开也会慢慢减少。蒸发发生在液体表面，可在沸点以下进行；温度、湿度、空气流动和表面积影响速率。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：只有冒白气时水才会蒸发？",
          "assistant": "水蒸气通常看不见，常见白雾是小水滴。衣服不冒白雾也可以在蒸发。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "evaporation-10",
      "group_id": "evaporation",
      "category": "physics",
      "topic": "蒸发",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "evaporation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "湿衣服没烧开，怎么就干了？",
          "assistant": "蒸发发生在液体表面，可在沸点以下进行；温度、湿度、空气流动和表面积影响速率。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "潮湿天气衣服为什么常干得慢？",
          "assistant": "周围空气湿度较高时，蒸发形成的净失水通常较慢；还要一起考虑温度、风和衣服厚薄。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于蒸发，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "dissolving-01",
      "group_id": "dissolving",
      "category": "physics",
      "topic": "溶解",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "dissolving"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "盐放进水里看不见，是消失了吗？",
          "assistant": "盐分散到水里，变得太小而看不见，但它并没有凭空消失。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "再怎么加盐，只要搅拌都能全溶掉？",
          "assistant": "搅拌能帮助更快溶解，但同样温度和水量下有容量限制，达到饱和后多加的盐可能留下。还可以接着想：沙子也能像盐一样溶进去吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "dissolving-02",
      "group_id": "dissolving",
      "category": "physics",
      "topic": "溶解",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "dissolving"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "盐放进水里看不见，是消失了吗？",
          "assistant": "盐分散到水里，变得太小而看不见，但它并没有凭空消失。食盐溶于水时形成分散的离子；搅拌可加快溶解过程，在一定温度下可溶解的量有限。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像一大群原本聚在一起的成员散到房间各处，但水里分散的是微观粒子。盐不是变成肉眼看不见的小块就完全解释清了，食盐在水中还会分成离子。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "dissolving-03",
      "group_id": "dissolving",
      "category": "physics",
      "topic": "溶解",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "dissolving"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "盐放进水里看不见，是消失了吗？",
          "assistant": "食盐溶于水时形成分散的离子；搅拌可加快溶解过程，在一定温度下可溶解的量有限。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "沙子也能像盐一样溶进去吗？",
          "assistant": "一般沙子在常温水中不会像食盐那样明显溶解，搅起来可能暂时悬浮，静置后常会沉下去。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "dissolving-04",
      "group_id": "dissolving",
      "category": "physics",
      "topic": "溶解",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "dissolving"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "盐放进水里看不见，是消失了吗？",
          "assistant": "盐分散到水里，变得太小而看不见，但它并没有凭空消失。还可以想想：沙子也能像盐一样溶进去吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用少量食盐和常温水观察搅拌前后，再缓慢加少量盐；不品尝实验溶液，不加其他清洁剂。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：盐分散到水里，变得太小而看不见，但它并没有凭空消失。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "dissolving-05",
      "group_id": "dissolving",
      "category": "physics",
      "topic": "溶解",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "dissolving"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "再怎么加盐，只要搅拌都能全溶掉？",
          "assistant": "搅拌能帮助更快溶解，但同样温度和水量下有容量限制，达到饱和后多加的盐可能留下。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用少量食盐和常温水观察搅拌前后，再缓慢加少量盐；不品尝实验溶液，不加其他清洁剂。盐不是变成肉眼看不见的小块就完全解释清了，食盐在水中还会分成离子。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "dissolving-06",
      "group_id": "dissolving",
      "category": "physics",
      "topic": "溶解",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "dissolving"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "盐放进水里看不见，是消失了吗？先用一句话说。",
          "assistant": "盐分散到水里，变得太小而看不见，但它并没有凭空消失。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "食盐溶于水时形成分散的离子；搅拌可加快溶解过程，在一定温度下可溶解的量有限。打个比方：像一大群原本聚在一起的成员散到房间各处，但水里分散的是微观粒子。盐不是变成肉眼看不见的小块就完全解释清了，食盐在水中还会分成离子。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "dissolving-07",
      "group_id": "dissolving",
      "category": "physics",
      "topic": "溶解",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "dissolving"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "盐放进水里看不见，是消失了吗？能打个比方吗？",
          "assistant": "盐分散到水里，变得太小而看不见，但它并没有凭空消失。像一大群原本聚在一起的成员散到房间各处，但水里分散的是微观粒子。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "盐不是变成肉眼看不见的小块就完全解释清了，食盐在水中还会分成离子。所以要记住的科学解释是：食盐溶于水时形成分散的离子；搅拌可加快溶解过程，在一定温度下可溶解的量有限。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "dissolving-08",
      "group_id": "dissolving",
      "category": "physics",
      "topic": "溶解",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "dissolving"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "盐放进水里看不见，是消失了吗？",
          "assistant": "盐分散到水里，变得太小而看不见，但它并没有凭空消失。食盐溶于水时形成分散的离子；搅拌可加快溶解过程，在一定温度下可溶解的量有限。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用少量食盐和常温水观察搅拌前后，再缓慢加少量盐；不品尝实验溶液，不加其他清洁剂。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。溶解的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "dissolving-09",
      "group_id": "dissolving",
      "category": "physics",
      "topic": "溶解",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "dissolving"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "盐放进水里看不见，是消失了吗？不要考我，也不要反问。",
          "assistant": "食盐溶于水时形成分散的离子；搅拌可加快溶解过程，在一定温度下可溶解的量有限。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：再怎么加盐，只要搅拌都能全溶掉？",
          "assistant": "搅拌能帮助更快溶解，但同样温度和水量下有容量限制，达到饱和后多加的盐可能留下。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "dissolving-10",
      "group_id": "dissolving",
      "category": "physics",
      "topic": "溶解",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "dissolving"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "盐放进水里看不见，是消失了吗？",
          "assistant": "盐分散到水里，变得太小而看不见，但它并没有凭空消失。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "沙子也能像盐一样溶进去吗？",
          "assistant": "一般沙子在常温水中不会像食盐那样明显溶解，搅起来可能暂时悬浮，静置后常会沉下去。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于溶解，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "arch-01",
      "group_id": "arch",
      "category": "engineering",
      "topic": "拱桥",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "arch"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石拱桥下面空着，怎么撑得住？",
          "assistant": "拱形把桥上承受的力传向两边，两侧牢固的支撑很重要。拱结构主要通过受压传递荷载，并对支座产生水平推力；稳定性取决于材料、几何与支撑，形状本身不能保证承重。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "只要摆成弯弯的，什么桥都不会塌？",
          "assistant": "不行。两端支撑不牢、材料不合适或荷载过大都会出问题，拱形只是结构设计的一部分。还可以接着想：如果移走一侧桥墩会怎样？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "arch-02",
      "group_id": "arch",
      "category": "engineering",
      "topic": "拱桥",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "arch"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石拱桥下面空着，怎么撑得住？",
          "assistant": "拱结构主要通过受压传递荷载，并对支座产生水平推力；稳定性取决于材料、几何与支撑，形状本身不能保证承重。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像一排彼此顶住的成员把压力传到两边，但需要站稳的边界。石块没有肌肉，也不会主动补位；比方不能替代真实的结构计算。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "arch-03",
      "group_id": "arch",
      "category": "engineering",
      "topic": "拱桥",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "arch"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石拱桥下面空着，怎么撑得住？",
          "assistant": "拱形把桥上承受的力传向两边，两侧牢固的支撑很重要。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "如果移走一侧桥墩会怎样？",
          "assistant": "拱的受力路径可能被破坏，结构会失稳；具体结果与构造有关，观察模型即可，不接触真实桥梁部件。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "arch-04",
      "group_id": "arch",
      "category": "engineering",
      "topic": "拱桥",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "arch"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石拱桥下面空着，怎么撑得住？",
          "assistant": "拱形把桥上承受的力传向两边，两侧牢固的支撑很重要。还可以想想：如果移走一侧桥墩会怎样？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在成人帮助下看积木拱桥模型，找两端支撑；只用轻积木，不把身体或重物放到模型上。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：拱形把桥上承受的力传向两边，两侧牢固的支撑很重要。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "arch-05",
      "group_id": "arch",
      "category": "engineering",
      "topic": "拱桥",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "arch"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "只要摆成弯弯的，什么桥都不会塌？",
          "assistant": "不行。两端支撑不牢、材料不合适或荷载过大都会出问题，拱形只是结构设计的一部分。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在成人帮助下看积木拱桥模型，找两端支撑；只用轻积木，不把身体或重物放到模型上。石块没有肌肉，也不会主动补位；比方不能替代真实的结构计算。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "arch-06",
      "group_id": "arch",
      "category": "engineering",
      "topic": "拱桥",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "arch"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石拱桥下面空着，怎么撑得住？先用一句话说。",
          "assistant": "拱形把桥上承受的力传向两边，两侧牢固的支撑很重要。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "拱结构主要通过受压传递荷载，并对支座产生水平推力；稳定性取决于材料、几何与支撑，形状本身不能保证承重。打个比方：像一排彼此顶住的成员把压力传到两边，但需要站稳的边界。石块没有肌肉，也不会主动补位；比方不能替代真实的结构计算。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "arch-07",
      "group_id": "arch",
      "category": "engineering",
      "topic": "拱桥",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "arch"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石拱桥下面空着，怎么撑得住？能打个比方吗？",
          "assistant": "拱形把桥上承受的力传向两边，两侧牢固的支撑很重要。像一排彼此顶住的成员把压力传到两边，但需要站稳的边界。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "石块没有肌肉，也不会主动补位；比方不能替代真实的结构计算。所以要记住的科学解释是：拱结构主要通过受压传递荷载，并对支座产生水平推力；稳定性取决于材料、几何与支撑，形状本身不能保证承重。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "arch-08",
      "group_id": "arch",
      "category": "engineering",
      "topic": "拱桥",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "arch"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石拱桥下面空着，怎么撑得住？",
          "assistant": "拱结构主要通过受压传递荷载，并对支座产生水平推力；稳定性取决于材料、几何与支撑，形状本身不能保证承重。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在成人帮助下看积木拱桥模型，找两端支撑；只用轻积木，不把身体或重物放到模型上。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。拱桥的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "arch-09",
      "group_id": "arch",
      "category": "engineering",
      "topic": "拱桥",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "arch"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石拱桥下面空着，怎么撑得住？不要考我，也不要反问。",
          "assistant": "拱形把桥上承受的力传向两边，两侧牢固的支撑很重要。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：只要摆成弯弯的，什么桥都不会塌？",
          "assistant": "不行。两端支撑不牢、材料不合适或荷载过大都会出问题，拱形只是结构设计的一部分。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "arch-10",
      "group_id": "arch",
      "category": "engineering",
      "topic": "拱桥",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "arch"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "石拱桥下面空着，怎么撑得住？",
          "assistant": "拱形把桥上承受的力传向两边，两侧牢固的支撑很重要。拱结构主要通过受压传递荷载，并对支座产生水平推力；稳定性取决于材料、几何与支撑，形状本身不能保证承重。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "如果移走一侧桥墩会怎样？",
          "assistant": "拱的受力路径可能被破坏，结构会失稳；具体结果与构造有关，观察模型即可，不接触真实桥梁部件。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于拱桥，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "triangle-01",
      "group_id": "triangle",
      "category": "engineering",
      "topic": "三角支架",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "triangle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "支架里为什么常有三角形？",
          "assistant": "平面铰接三角形具有几何稳定性；四边形可在边长不变时变形，加斜杆能形成三角单元，实际强度还受材料和连接影响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "三角形一定比所有四边形都结实？",
          "assistant": "不能这样一概而论。这里比较的是理想铰接杆件的形状稳定性，真实结构还要看材料、尺寸和接头。还可以接着想：正方形为什么能歪成菱形？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "triangle-02",
      "group_id": "triangle",
      "category": "engineering",
      "topic": "三角支架",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "triangle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "支架里为什么常有三角形？",
          "assistant": "边长固定的三角形不容易改变形状，能帮助架子保持稳定。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像给会歪的相框加一条斜撑，让它不能随便变成菱形。不是画上斜线就变强，斜撑必须实际连接并承受力。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "triangle-03",
      "group_id": "triangle",
      "category": "engineering",
      "topic": "三角支架",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "triangle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "支架里为什么常有三角形？",
          "assistant": "边长固定的三角形不容易改变形状，能帮助架子保持稳定。平面铰接三角形具有几何稳定性；四边形可在边长不变时变形，加斜杆能形成三角单元，实际强度还受材料和连接影响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "正方形为什么能歪成菱形？",
          "assistant": "如果四角能转动，四条边的长度不变也能改变角度；加合适斜撑后，这种变化会受到限制。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "triangle-04",
      "group_id": "triangle",
      "category": "engineering",
      "topic": "三角支架",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "triangle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "支架里为什么常有三角形？",
          "assistant": "边长固定的三角形不容易改变形状，能帮助架子保持稳定。还可以想想：正方形为什么能歪成菱形？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用纸条和可活动的纸连接做三角形、四边形模型，轻轻推角比较；成人处理尖锐连接件。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：边长固定的三角形不容易改变形状，能帮助架子保持稳定。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "triangle-05",
      "group_id": "triangle",
      "category": "engineering",
      "topic": "三角支架",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "triangle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "三角形一定比所有四边形都结实？",
          "assistant": "不能这样一概而论。这里比较的是理想铰接杆件的形状稳定性，真实结构还要看材料、尺寸和接头。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用纸条和可活动的纸连接做三角形、四边形模型，轻轻推角比较；成人处理尖锐连接件。不是画上斜线就变强，斜撑必须实际连接并承受力。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "triangle-06",
      "group_id": "triangle",
      "category": "engineering",
      "topic": "三角支架",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "triangle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "支架里为什么常有三角形？先用一句话说。",
          "assistant": "边长固定的三角形不容易改变形状，能帮助架子保持稳定。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "平面铰接三角形具有几何稳定性；四边形可在边长不变时变形，加斜杆能形成三角单元，实际强度还受材料和连接影响。打个比方：像给会歪的相框加一条斜撑，让它不能随便变成菱形。不是画上斜线就变强，斜撑必须实际连接并承受力。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "triangle-07",
      "group_id": "triangle",
      "category": "engineering",
      "topic": "三角支架",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "triangle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "支架里为什么常有三角形？能打个比方吗？",
          "assistant": "边长固定的三角形不容易改变形状，能帮助架子保持稳定。像给会歪的相框加一条斜撑，让它不能随便变成菱形。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "不是画上斜线就变强，斜撑必须实际连接并承受力。所以要记住的科学解释是：平面铰接三角形具有几何稳定性；四边形可在边长不变时变形，加斜杆能形成三角单元，实际强度还受材料和连接影响。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "triangle-08",
      "group_id": "triangle",
      "category": "engineering",
      "topic": "三角支架",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "triangle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "支架里为什么常有三角形？",
          "assistant": "边长固定的三角形不容易改变形状，能帮助架子保持稳定。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用纸条和可活动的纸连接做三角形、四边形模型，轻轻推角比较；成人处理尖锐连接件。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。三角支架的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "triangle-09",
      "group_id": "triangle",
      "category": "engineering",
      "topic": "三角支架",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "triangle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "支架里为什么常有三角形？不要考我，也不要反问。",
          "assistant": "边长固定的三角形不容易改变形状，能帮助架子保持稳定。平面铰接三角形具有几何稳定性；四边形可在边长不变时变形，加斜杆能形成三角单元，实际强度还受材料和连接影响。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：三角形一定比所有四边形都结实？",
          "assistant": "不能这样一概而论。这里比较的是理想铰接杆件的形状稳定性，真实结构还要看材料、尺寸和接头。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "triangle-10",
      "group_id": "triangle",
      "category": "engineering",
      "topic": "三角支架",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "triangle"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "支架里为什么常有三角形？",
          "assistant": "平面铰接三角形具有几何稳定性；四边形可在边长不变时变形，加斜杆能形成三角单元，实际强度还受材料和连接影响。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "正方形为什么能歪成菱形？",
          "assistant": "如果四角能转动，四条边的长度不变也能改变角度；加合适斜撑后，这种变化会受到限制。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于三角支架，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "lever-01",
      "group_id": "lever",
      "category": "engineering",
      "topic": "杠杆",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "lever"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "跷跷板上，小朋友能抬起大人吗？",
          "assistant": "在合适位置可能做到：离支点更远的一侧，用较小的力也能产生较大的转动作用。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "用杠杆就能不花力气举起任何东西？",
          "assistant": "杠杆可以改变所需力和移动距离的关系，但不会让任意重量变得毫无代价，还受材料强度和空间限制。还可以接着想：支点靠近重物，是不是更容易抬起来？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "lever-02",
      "group_id": "lever",
      "category": "engineering",
      "topic": "杠杆",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "lever"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "跷跷板上，小朋友能抬起大人吗？",
          "assistant": "在合适位置可能做到：离支点更远的一侧，用较小的力也能产生较大的转动作用。杠杆平衡与力及其到支点的垂直力臂有关；省力通常要移动更长距离，并不会凭空节省功。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像推门时推靠近门把手的位置通常比靠近合页更容易转动。门和直杆结构不同，比较的是力臂作用，不是所有推法都相同。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "lever-03",
      "group_id": "lever",
      "category": "engineering",
      "topic": "杠杆",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "lever"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "跷跷板上，小朋友能抬起大人吗？",
          "assistant": "杠杆平衡与力及其到支点的垂直力臂有关；省力通常要移动更长距离，并不会凭空节省功。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "支点靠近重物，是不是更容易抬起来？",
          "assistant": "在方向等条件相近时，重物侧力臂变短、用力侧力臂变长，通常更省力；用力一端也要走更长路。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "lever-04",
      "group_id": "lever",
      "category": "engineering",
      "topic": "杠杆",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "lever"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "跷跷板上，小朋友能抬起大人吗？",
          "assistant": "在合适位置可能做到：离支点更远的一侧，用较小的力也能产生较大的转动作用。还可以想想：支点靠近重物，是不是更容易抬起来？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用尺子、橡皮支点和少量橡皮块做桌面模型，移动支点观察；不撬家具，不把手放在重物下。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：在合适位置可能做到：离支点更远的一侧，用较小的力也能产生较大的转动作用。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "lever-05",
      "group_id": "lever",
      "category": "engineering",
      "topic": "杠杆",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "lever"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "用杠杆就能不花力气举起任何东西？",
          "assistant": "杠杆可以改变所需力和移动距离的关系，但不会让任意重量变得毫无代价，还受材料强度和空间限制。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用尺子、橡皮支点和少量橡皮块做桌面模型，移动支点观察；不撬家具，不把手放在重物下。门和直杆结构不同，比较的是力臂作用，不是所有推法都相同。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "lever-06",
      "group_id": "lever",
      "category": "engineering",
      "topic": "杠杆",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "lever"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "跷跷板上，小朋友能抬起大人吗？先用一句话说。",
          "assistant": "在合适位置可能做到：离支点更远的一侧，用较小的力也能产生较大的转动作用。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "杠杆平衡与力及其到支点的垂直力臂有关；省力通常要移动更长距离，并不会凭空节省功。打个比方：像推门时推靠近门把手的位置通常比靠近合页更容易转动。门和直杆结构不同，比较的是力臂作用，不是所有推法都相同。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "lever-07",
      "group_id": "lever",
      "category": "engineering",
      "topic": "杠杆",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "lever"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "跷跷板上，小朋友能抬起大人吗？能打个比方吗？",
          "assistant": "在合适位置可能做到：离支点更远的一侧，用较小的力也能产生较大的转动作用。像推门时推靠近门把手的位置通常比靠近合页更容易转动。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "门和直杆结构不同，比较的是力臂作用，不是所有推法都相同。所以要记住的科学解释是：杠杆平衡与力及其到支点的垂直力臂有关；省力通常要移动更长距离，并不会凭空节省功。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "lever-08",
      "group_id": "lever",
      "category": "engineering",
      "topic": "杠杆",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "lever"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "跷跷板上，小朋友能抬起大人吗？",
          "assistant": "在合适位置可能做到：离支点更远的一侧，用较小的力也能产生较大的转动作用。杠杆平衡与力及其到支点的垂直力臂有关；省力通常要移动更长距离，并不会凭空节省功。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用尺子、橡皮支点和少量橡皮块做桌面模型，移动支点观察；不撬家具，不把手放在重物下。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。杠杆的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "lever-09",
      "group_id": "lever",
      "category": "engineering",
      "topic": "杠杆",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "lever"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "跷跷板上，小朋友能抬起大人吗？不要考我，也不要反问。",
          "assistant": "杠杆平衡与力及其到支点的垂直力臂有关；省力通常要移动更长距离，并不会凭空节省功。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：用杠杆就能不花力气举起任何东西？",
          "assistant": "杠杆可以改变所需力和移动距离的关系，但不会让任意重量变得毫无代价，还受材料强度和空间限制。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "lever-10",
      "group_id": "lever",
      "category": "engineering",
      "topic": "杠杆",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "lever"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "跷跷板上，小朋友能抬起大人吗？",
          "assistant": "在合适位置可能做到：离支点更远的一侧，用较小的力也能产生较大的转动作用。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "支点靠近重物，是不是更容易抬起来？",
          "assistant": "在方向等条件相近时，重物侧力臂变短、用力侧力臂变长，通常更省力；用力一端也要走更长路。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于杠杆，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "pulley-01",
      "group_id": "pulley",
      "category": "engineering",
      "topic": "滑轮",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "pulley"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "升旗的绳子为什么绕过轮子？",
          "assistant": "固定滑轮可以改变拉绳方向，让人在下面向下拉，旗子向上升。理想定滑轮主要改变力的方向，通常不省力；动滑轮或滑轮组可用更长拉绳距离换较小拉力，实际有摩擦。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "有一个滑轮，拉力就一定减半？",
          "assistant": "不是。固定在上面的单个定滑轮通常只改变方向，不能把所有滑轮都当作省一半力。还可以接着想：省力的滑轮组是不是也省拉绳路程？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "pulley-02",
      "group_id": "pulley",
      "category": "engineering",
      "topic": "滑轮",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "pulley"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "升旗的绳子为什么绕过轮子？",
          "assistant": "理想定滑轮主要改变力的方向，通常不省力；动滑轮或滑轮组可用更长拉绳距离换较小拉力，实际有摩擦。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像把拉力的路线拐了个弯，手向下拉，另一头就能向上。绳子与轮子有摩擦和重量，真实拉力不一定正好等于理想计算。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "pulley-03",
      "group_id": "pulley",
      "category": "engineering",
      "topic": "滑轮",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "pulley"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "升旗的绳子为什么绕过轮子？",
          "assistant": "固定滑轮可以改变拉绳方向，让人在下面向下拉，旗子向上升。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "省力的滑轮组是不是也省拉绳路程？",
          "assistant": "通常相反。在理想情形下，省力需要多拉一段绳，不能同时把做同一件事的力和路程都随意减少。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "pulley-04",
      "group_id": "pulley",
      "category": "engineering",
      "topic": "滑轮",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "pulley"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "升旗的绳子为什么绕过轮子？",
          "assistant": "固定滑轮可以改变拉绳方向，让人在下面向下拉，旗子向上升。还可以想想：省力的滑轮组是不是也省拉绳路程？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "看升旗装置示意图，沿同一根绳画出方向；不攀爬旗杆，不拉公共设施绳索。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：固定滑轮可以改变拉绳方向，让人在下面向下拉，旗子向上升。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "pulley-05",
      "group_id": "pulley",
      "category": "engineering",
      "topic": "滑轮",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "pulley"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "有一个滑轮，拉力就一定减半？",
          "assistant": "不是。固定在上面的单个定滑轮通常只改变方向，不能把所有滑轮都当作省一半力。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "看升旗装置示意图，沿同一根绳画出方向；不攀爬旗杆，不拉公共设施绳索。绳子与轮子有摩擦和重量，真实拉力不一定正好等于理想计算。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "pulley-06",
      "group_id": "pulley",
      "category": "engineering",
      "topic": "滑轮",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "pulley"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "升旗的绳子为什么绕过轮子？先用一句话说。",
          "assistant": "固定滑轮可以改变拉绳方向，让人在下面向下拉，旗子向上升。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "理想定滑轮主要改变力的方向，通常不省力；动滑轮或滑轮组可用更长拉绳距离换较小拉力，实际有摩擦。打个比方：像把拉力的路线拐了个弯，手向下拉，另一头就能向上。绳子与轮子有摩擦和重量，真实拉力不一定正好等于理想计算。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "pulley-07",
      "group_id": "pulley",
      "category": "engineering",
      "topic": "滑轮",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "pulley"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "升旗的绳子为什么绕过轮子？能打个比方吗？",
          "assistant": "固定滑轮可以改变拉绳方向，让人在下面向下拉，旗子向上升。像把拉力的路线拐了个弯，手向下拉，另一头就能向上。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "绳子与轮子有摩擦和重量，真实拉力不一定正好等于理想计算。所以要记住的科学解释是：理想定滑轮主要改变力的方向，通常不省力；动滑轮或滑轮组可用更长拉绳距离换较小拉力，实际有摩擦。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "pulley-08",
      "group_id": "pulley",
      "category": "engineering",
      "topic": "滑轮",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "pulley"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "升旗的绳子为什么绕过轮子？",
          "assistant": "理想定滑轮主要改变力的方向，通常不省力；动滑轮或滑轮组可用更长拉绳距离换较小拉力，实际有摩擦。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "看升旗装置示意图，沿同一根绳画出方向；不攀爬旗杆，不拉公共设施绳索。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。滑轮的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "pulley-09",
      "group_id": "pulley",
      "category": "engineering",
      "topic": "滑轮",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "pulley"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "升旗的绳子为什么绕过轮子？不要考我，也不要反问。",
          "assistant": "固定滑轮可以改变拉绳方向，让人在下面向下拉，旗子向上升。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：有一个滑轮，拉力就一定减半？",
          "assistant": "不是。固定在上面的单个定滑轮通常只改变方向，不能把所有滑轮都当作省一半力。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "pulley-10",
      "group_id": "pulley",
      "category": "engineering",
      "topic": "滑轮",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "pulley"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "升旗的绳子为什么绕过轮子？",
          "assistant": "固定滑轮可以改变拉绳方向，让人在下面向下拉，旗子向上升。理想定滑轮主要改变力的方向，通常不省力；动滑轮或滑轮组可用更长拉绳距离换较小拉力，实际有摩擦。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "省力的滑轮组是不是也省拉绳路程？",
          "assistant": "通常相反。在理想情形下，省力需要多拉一段绳，不能同时把做同一件事的力和路程都随意减少。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于滑轮，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "gears-01",
      "group_id": "gears",
      "category": "engineering",
      "topic": "齿轮",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "gears"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "两个齿轮为什么一起转？",
          "assistant": "两个外啮合齿轮转向相反；转速比与齿数有关，较大齿轮通常转得更慢，但传递能量有损耗。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "大齿轮牙多，所以一定转得更快？",
          "assistant": "对同一对外啮合齿轮，每次经过接触处的齿数相配；齿多的轮转完一圈需要更久，通常更慢。还可以接着想：加第三个外齿轮，最外两个方向一样吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "gears-02",
      "group_id": "gears",
      "category": "engineering",
      "topic": "齿轮",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "gears"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "两个齿轮为什么一起转？",
          "assistant": "一个齿轮的齿推动另一个的齿，把转动传过去。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像两个互相推着走的带齿圆盘，每次一个齿推进对应的一格。齿轮不能穿过对方，真实运动受齿形和安装影响；比喻不说明所有变速机构。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "gears-03",
      "group_id": "gears",
      "category": "engineering",
      "topic": "齿轮",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "gears"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "两个齿轮为什么一起转？",
          "assistant": "一个齿轮的齿推动另一个的齿，把转动传过去。两个外啮合齿轮转向相反；转速比与齿数有关，较大齿轮通常转得更慢，但传递能量有损耗。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "加第三个外齿轮，最外两个方向一样吗？",
          "assistant": "在简单连续外啮合排列中，每次啮合反一次方向，经过中间轮后，首尾两轮方向相同。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "gears-04",
      "group_id": "gears",
      "category": "engineering",
      "topic": "齿轮",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "gears"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "两个齿轮为什么一起转？",
          "assistant": "一个齿轮的齿推动另一个的齿，把转动传过去。还可以想想：加第三个外齿轮，最外两个方向一样吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用封闭式玩具齿轮板观察两轮方向并数转数；不把手指、头发伸入转动齿轮。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：一个齿轮的齿推动另一个的齿，把转动传过去。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "gears-05",
      "group_id": "gears",
      "category": "engineering",
      "topic": "齿轮",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "gears"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "大齿轮牙多，所以一定转得更快？",
          "assistant": "对同一对外啮合齿轮，每次经过接触处的齿数相配；齿多的轮转完一圈需要更久，通常更慢。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用封闭式玩具齿轮板观察两轮方向并数转数；不把手指、头发伸入转动齿轮。齿轮不能穿过对方，真实运动受齿形和安装影响；比喻不说明所有变速机构。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "gears-06",
      "group_id": "gears",
      "category": "engineering",
      "topic": "齿轮",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "gears"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "两个齿轮为什么一起转？先用一句话说。",
          "assistant": "一个齿轮的齿推动另一个的齿，把转动传过去。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "两个外啮合齿轮转向相反；转速比与齿数有关，较大齿轮通常转得更慢，但传递能量有损耗。打个比方：像两个互相推着走的带齿圆盘，每次一个齿推进对应的一格。齿轮不能穿过对方，真实运动受齿形和安装影响；比喻不说明所有变速机构。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "gears-07",
      "group_id": "gears",
      "category": "engineering",
      "topic": "齿轮",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "gears"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "两个齿轮为什么一起转？能打个比方吗？",
          "assistant": "一个齿轮的齿推动另一个的齿，把转动传过去。像两个互相推着走的带齿圆盘，每次一个齿推进对应的一格。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "齿轮不能穿过对方，真实运动受齿形和安装影响；比喻不说明所有变速机构。所以要记住的科学解释是：两个外啮合齿轮转向相反；转速比与齿数有关，较大齿轮通常转得更慢，但传递能量有损耗。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "gears-08",
      "group_id": "gears",
      "category": "engineering",
      "topic": "齿轮",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "gears"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "两个齿轮为什么一起转？",
          "assistant": "一个齿轮的齿推动另一个的齿，把转动传过去。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用封闭式玩具齿轮板观察两轮方向并数转数；不把手指、头发伸入转动齿轮。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。齿轮的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "gears-09",
      "group_id": "gears",
      "category": "engineering",
      "topic": "齿轮",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "gears"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "两个齿轮为什么一起转？不要考我，也不要反问。",
          "assistant": "一个齿轮的齿推动另一个的齿，把转动传过去。两个外啮合齿轮转向相反；转速比与齿数有关，较大齿轮通常转得更慢，但传递能量有损耗。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：大齿轮牙多，所以一定转得更快？",
          "assistant": "对同一对外啮合齿轮，每次经过接触处的齿数相配；齿多的轮转完一圈需要更久，通常更慢。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "gears-10",
      "group_id": "gears",
      "category": "engineering",
      "topic": "齿轮",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "gears"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "两个齿轮为什么一起转？",
          "assistant": "两个外啮合齿轮转向相反；转速比与齿数有关，较大齿轮通常转得更慢，但传递能量有损耗。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "加第三个外齿轮，最外两个方向一样吗？",
          "assistant": "在简单连续外啮合排列中，每次啮合反一次方向，经过中间轮后，首尾两轮方向相同。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于齿轮，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "wheel-01",
      "group_id": "wheel",
      "category": "engineering",
      "topic": "车轮",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "wheel"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车轮为什么比拖着箱子轻松？",
          "assistant": "合适的车轮把许多滑动变成滚动，常能减少移动时的阻碍。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "车轮一转就完全没有摩擦了？",
          "assistant": "仍然有接触作用、滚动阻力和轮轴摩擦。车轮常能减小阻碍，并不把摩擦全部消灭。还可以接着想：小车轮在草地上也一定很好推吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "wheel-02",
      "group_id": "wheel",
      "category": "engineering",
      "topic": "车轮",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "wheel"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车轮为什么比拖着箱子轻松？",
          "assistant": "合适的车轮把许多滑动变成滚动，常能减少移动时的阻碍。滚动阻力来自轮与地面的形变等，通常可低于直接滑动摩擦；轮轴摩擦、地面和轮子大小也影响推行。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像把物体放到能不断转动的支撑上，接触的部分轮流换班。地面和轮子会形变，不能把所有表面都想成完美坚硬无阻力。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "wheel-03",
      "group_id": "wheel",
      "category": "engineering",
      "topic": "车轮",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "wheel"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车轮为什么比拖着箱子轻松？",
          "assistant": "滚动阻力来自轮与地面的形变等，通常可低于直接滑动摩擦；轮轴摩擦、地面和轮子大小也影响推行。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "小车轮在草地上也一定很好推吗？",
          "assistant": "未必。软地面、凹坑和轮子尺寸都会影响，小轮可能陷入或卡住；不能只看有没有轮子。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "wheel-04",
      "group_id": "wheel",
      "category": "engineering",
      "topic": "车轮",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "wheel"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车轮为什么比拖着箱子轻松？",
          "assistant": "合适的车轮把许多滑动变成滚动，常能减少移动时的阻碍。还可以想想：小车轮在草地上也一定很好推吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在干燥平桌上轻推玩具车，比较轮子自由转与轻轻固定时的手感；不使用重车。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：合适的车轮把许多滑动变成滚动，常能减少移动时的阻碍。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "wheel-05",
      "group_id": "wheel",
      "category": "engineering",
      "topic": "车轮",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "wheel"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车轮一转就完全没有摩擦了？",
          "assistant": "仍然有接触作用、滚动阻力和轮轴摩擦。车轮常能减小阻碍，并不把摩擦全部消灭。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在干燥平桌上轻推玩具车，比较轮子自由转与轻轻固定时的手感；不使用重车。地面和轮子会形变，不能把所有表面都想成完美坚硬无阻力。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "wheel-06",
      "group_id": "wheel",
      "category": "engineering",
      "topic": "车轮",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "wheel"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车轮为什么比拖着箱子轻松？先用一句话说。",
          "assistant": "合适的车轮把许多滑动变成滚动，常能减少移动时的阻碍。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "滚动阻力来自轮与地面的形变等，通常可低于直接滑动摩擦；轮轴摩擦、地面和轮子大小也影响推行。打个比方：像把物体放到能不断转动的支撑上，接触的部分轮流换班。地面和轮子会形变，不能把所有表面都想成完美坚硬无阻力。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "wheel-07",
      "group_id": "wheel",
      "category": "engineering",
      "topic": "车轮",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "wheel"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车轮为什么比拖着箱子轻松？能打个比方吗？",
          "assistant": "合适的车轮把许多滑动变成滚动，常能减少移动时的阻碍。像把物体放到能不断转动的支撑上，接触的部分轮流换班。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "地面和轮子会形变，不能把所有表面都想成完美坚硬无阻力。所以要记住的科学解释是：滚动阻力来自轮与地面的形变等，通常可低于直接滑动摩擦；轮轴摩擦、地面和轮子大小也影响推行。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "wheel-08",
      "group_id": "wheel",
      "category": "engineering",
      "topic": "车轮",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "wheel"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车轮为什么比拖着箱子轻松？",
          "assistant": "合适的车轮把许多滑动变成滚动，常能减少移动时的阻碍。滚动阻力来自轮与地面的形变等，通常可低于直接滑动摩擦；轮轴摩擦、地面和轮子大小也影响推行。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在干燥平桌上轻推玩具车，比较轮子自由转与轻轻固定时的手感；不使用重车。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。车轮的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "wheel-09",
      "group_id": "wheel",
      "category": "engineering",
      "topic": "车轮",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "wheel"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车轮为什么比拖着箱子轻松？不要考我，也不要反问。",
          "assistant": "滚动阻力来自轮与地面的形变等，通常可低于直接滑动摩擦；轮轴摩擦、地面和轮子大小也影响推行。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：车轮一转就完全没有摩擦了？",
          "assistant": "仍然有接触作用、滚动阻力和轮轴摩擦。车轮常能减小阻碍，并不把摩擦全部消灭。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "wheel-10",
      "group_id": "wheel",
      "category": "engineering",
      "topic": "车轮",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "wheel"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车轮为什么比拖着箱子轻松？",
          "assistant": "合适的车轮把许多滑动变成滚动，常能减少移动时的阻碍。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "小车轮在草地上也一定很好推吗？",
          "assistant": "未必。软地面、凹坑和轮子尺寸都会影响，小轮可能陷入或卡住；不能只看有没有轮子。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于车轮，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "airplane-01",
      "group_id": "airplane",
      "category": "engineering",
      "topic": "机翼",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "airplane"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "飞机那么重怎么飞起来？",
          "assistant": "运动中的机翼改变周围空气的流动，空气对机翼产生向上的作用，帮助托住飞机。升力来自机翼与气流的相互作用，可从压力分布和动量改变解释；上下表面空气不必同时到达后缘。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "机翼上面的空气必须赶上下面的空气？",
          "assistant": "没有这种必须同时会合的规则。机翼形状和迎角改变气流及压力，用“上面路长所以必须更快”解释会误导。还可以接着想：机翼越翘越容易飞吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "airplane-02",
      "group_id": "airplane",
      "category": "engineering",
      "topic": "机翼",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "airplane"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "飞机那么重怎么飞起来？",
          "assistant": "升力来自机翼与气流的相互作用，可从压力分布和动量改变解释；上下表面空气不必同时到达后缘。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像把空气向下偏转，空气也对机翼产生相互作用，但实际气流是连续复杂的。机翼不是简单用手拍空气，真实升力取决于速度、形状、迎角等条件。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "airplane-03",
      "group_id": "airplane",
      "category": "engineering",
      "topic": "机翼",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "airplane"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "飞机那么重怎么飞起来？",
          "assistant": "运动中的机翼改变周围空气的流动，空气对机翼产生向上的作用，帮助托住飞机。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "机翼越翘越容易飞吗？",
          "assistant": "不是。迎角过大可能导致气流分离、升力明显下降，即失速；不能把小范围趋势无限延长。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "airplane-04",
      "group_id": "airplane",
      "category": "engineering",
      "topic": "机翼",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "airplane"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "飞机那么重怎么飞起来？",
          "assistant": "运动中的机翼改变周围空气的流动，空气对机翼产生向上的作用，帮助托住飞机。还可以想想：机翼越翘越容易飞吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在安全空地轻投纸飞机，比较机翼折法；避开人脸和道路，不爬高处投掷。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：运动中的机翼改变周围空气的流动，空气对机翼产生向上的作用，帮助托住飞机。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "airplane-05",
      "group_id": "airplane",
      "category": "engineering",
      "topic": "机翼",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "airplane"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "机翼上面的空气必须赶上下面的空气？",
          "assistant": "没有这种必须同时会合的规则。机翼形状和迎角改变气流及压力，用“上面路长所以必须更快”解释会误导。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在安全空地轻投纸飞机，比较机翼折法；避开人脸和道路，不爬高处投掷。机翼不是简单用手拍空气，真实升力取决于速度、形状、迎角等条件。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "airplane-06",
      "group_id": "airplane",
      "category": "engineering",
      "topic": "机翼",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "airplane"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "飞机那么重怎么飞起来？先用一句话说。",
          "assistant": "运动中的机翼改变周围空气的流动，空气对机翼产生向上的作用，帮助托住飞机。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "升力来自机翼与气流的相互作用，可从压力分布和动量改变解释；上下表面空气不必同时到达后缘。打个比方：像把空气向下偏转，空气也对机翼产生相互作用，但实际气流是连续复杂的。机翼不是简单用手拍空气，真实升力取决于速度、形状、迎角等条件。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "airplane-07",
      "group_id": "airplane",
      "category": "engineering",
      "topic": "机翼",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "airplane"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "飞机那么重怎么飞起来？能打个比方吗？",
          "assistant": "运动中的机翼改变周围空气的流动，空气对机翼产生向上的作用，帮助托住飞机。像把空气向下偏转，空气也对机翼产生相互作用，但实际气流是连续复杂的。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "机翼不是简单用手拍空气，真实升力取决于速度、形状、迎角等条件。所以要记住的科学解释是：升力来自机翼与气流的相互作用，可从压力分布和动量改变解释；上下表面空气不必同时到达后缘。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "airplane-08",
      "group_id": "airplane",
      "category": "engineering",
      "topic": "机翼",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "airplane"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "飞机那么重怎么飞起来？",
          "assistant": "升力来自机翼与气流的相互作用，可从压力分布和动量改变解释；上下表面空气不必同时到达后缘。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在安全空地轻投纸飞机，比较机翼折法；避开人脸和道路，不爬高处投掷。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。机翼的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "airplane-09",
      "group_id": "airplane",
      "category": "engineering",
      "topic": "机翼",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "airplane"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "飞机那么重怎么飞起来？不要考我，也不要反问。",
          "assistant": "运动中的机翼改变周围空气的流动，空气对机翼产生向上的作用，帮助托住飞机。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：机翼上面的空气必须赶上下面的空气？",
          "assistant": "没有这种必须同时会合的规则。机翼形状和迎角改变气流及压力，用“上面路长所以必须更快”解释会误导。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "airplane-10",
      "group_id": "airplane",
      "category": "engineering",
      "topic": "机翼",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "airplane"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "飞机那么重怎么飞起来？",
          "assistant": "运动中的机翼改变周围空气的流动，空气对机翼产生向上的作用，帮助托住飞机。升力来自机翼与气流的相互作用，可从压力分布和动量改变解释；上下表面空气不必同时到达后缘。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "机翼越翘越容易飞吗？",
          "assistant": "不是。迎角过大可能导致气流分离、升力明显下降，即失速；不能把小范围趋势无限延长。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于机翼，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "parachute-01",
      "group_id": "parachute",
      "category": "engineering",
      "topic": "降落伞",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "parachute"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "降落伞张开后为什么落得慢？",
          "assistant": "阻力随速度、迎风面积、形状和空气密度等改变；降落伞不消除重力，合适条件下阻力可与重力平衡。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "降落伞把地球的引力关掉了？",
          "assistant": "重力仍在。张开的伞增加空气阻力，改变下落速度；不是让物体突然没有重量。还可以接着想：伞越大，任何时候都一定更慢吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "parachute-02",
      "group_id": "parachute",
      "category": "engineering",
      "topic": "降落伞",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "parachute"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "降落伞张开后为什么落得慢？",
          "assistant": "伞面让空气产生更大的阻力，能够减慢下落。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像在空气中撑开一张能“兜住风”的大面，不过空气仍会绕着它流动。空气不是坚实垫子，伞也不能保证任何物体都安全落下。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "parachute-03",
      "group_id": "parachute",
      "category": "engineering",
      "topic": "降落伞",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "parachute"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "降落伞张开后为什么落得慢？",
          "assistant": "伞面让空气产生更大的阻力，能够减慢下落。阻力随速度、迎风面积、形状和空气密度等改变；降落伞不消除重力，合适条件下阻力可与重力平衡。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "伞越大，任何时候都一定更慢吗？",
          "assistant": "还要看伞能否展开、总重量、形状和气流。只在其他条件相近时比较面积，结论才更有意义。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "parachute-04",
      "group_id": "parachute",
      "category": "engineering",
      "topic": "降落伞",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "parachute"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "降落伞张开后为什么落得慢？",
          "assistant": "伞面让空气产生更大的阻力，能够减慢下落。还可以想想：伞越大，任何时候都一定更慢吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用纸巾和短线给很轻的纸团做模型，从桌面附近低处释放；不从窗边、高处投物，不用塑料袋套头。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：伞面让空气产生更大的阻力，能够减慢下落。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "parachute-05",
      "group_id": "parachute",
      "category": "engineering",
      "topic": "降落伞",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "parachute"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "降落伞把地球的引力关掉了？",
          "assistant": "重力仍在。张开的伞增加空气阻力，改变下落速度；不是让物体突然没有重量。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用纸巾和短线给很轻的纸团做模型，从桌面附近低处释放；不从窗边、高处投物，不用塑料袋套头。空气不是坚实垫子，伞也不能保证任何物体都安全落下。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "parachute-06",
      "group_id": "parachute",
      "category": "engineering",
      "topic": "降落伞",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "parachute"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "降落伞张开后为什么落得慢？先用一句话说。",
          "assistant": "伞面让空气产生更大的阻力，能够减慢下落。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "阻力随速度、迎风面积、形状和空气密度等改变；降落伞不消除重力，合适条件下阻力可与重力平衡。打个比方：像在空气中撑开一张能“兜住风”的大面，不过空气仍会绕着它流动。空气不是坚实垫子，伞也不能保证任何物体都安全落下。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "parachute-07",
      "group_id": "parachute",
      "category": "engineering",
      "topic": "降落伞",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "parachute"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "降落伞张开后为什么落得慢？能打个比方吗？",
          "assistant": "伞面让空气产生更大的阻力，能够减慢下落。像在空气中撑开一张能“兜住风”的大面，不过空气仍会绕着它流动。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "空气不是坚实垫子，伞也不能保证任何物体都安全落下。所以要记住的科学解释是：阻力随速度、迎风面积、形状和空气密度等改变；降落伞不消除重力，合适条件下阻力可与重力平衡。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "parachute-08",
      "group_id": "parachute",
      "category": "engineering",
      "topic": "降落伞",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "parachute"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "降落伞张开后为什么落得慢？",
          "assistant": "伞面让空气产生更大的阻力，能够减慢下落。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用纸巾和短线给很轻的纸团做模型，从桌面附近低处释放；不从窗边、高处投物，不用塑料袋套头。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。降落伞的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "parachute-09",
      "group_id": "parachute",
      "category": "engineering",
      "topic": "降落伞",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "parachute"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "降落伞张开后为什么落得慢？不要考我，也不要反问。",
          "assistant": "伞面让空气产生更大的阻力，能够减慢下落。阻力随速度、迎风面积、形状和空气密度等改变；降落伞不消除重力，合适条件下阻力可与重力平衡。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：降落伞把地球的引力关掉了？",
          "assistant": "重力仍在。张开的伞增加空气阻力，改变下落速度；不是让物体突然没有重量。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "parachute-10",
      "group_id": "parachute",
      "category": "engineering",
      "topic": "降落伞",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "parachute"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "降落伞张开后为什么落得慢？",
          "assistant": "阻力随速度、迎风面积、形状和空气密度等改变；降落伞不消除重力，合适条件下阻力可与重力平衡。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "伞越大，任何时候都一定更慢吗？",
          "assistant": "还要看伞能否展开、总重量、形状和气流。只在其他条件相近时比较面积，结论才更有意义。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于降落伞，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "insulation-01",
      "group_id": "insulation",
      "category": "engineering",
      "topic": "保温",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "insulation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "保温杯为什么能让水凉得慢？",
          "assistant": "它尽量减慢热量传出去，所以热水能热得久一些。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "保温杯里面藏着不插电的小火炉？",
          "assistant": "普通保温杯不靠火炉加热，它主要减慢热量交换；放久了水仍会逐渐接近周围温度。还可以接着想：冰水放进去，会不会也被保温杯加热？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "insulation-02",
      "group_id": "insulation",
      "category": "engineering",
      "topic": "保温",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "insulation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "保温杯为什么能让水凉得慢？",
          "assistant": "它尽量减慢热量传出去，所以热水能热得久一些。保温结构可减弱传导、对流和辐射换热；真空层不能完全阻止所有热传递，普通保温杯不会主动产生热量。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像给热量离开的路设置障碍，但不是把所有路彻底封死。热不是一群小人，保温结构对不同传热方式的作用也不相同。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "insulation-03",
      "group_id": "insulation",
      "category": "engineering",
      "topic": "保温",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "insulation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "保温杯为什么能让水凉得慢？",
          "assistant": "保温结构可减弱传导、对流和辐射换热；真空层不能完全阻止所有热传递，普通保温杯不会主动产生热量。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "冰水放进去，会不会也被保温杯加热？",
          "assistant": "保温杯也能减慢外界热量进入，因此能让冷水保持较冷更久；它不是只认得热水。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "insulation-04",
      "group_id": "insulation",
      "category": "engineering",
      "topic": "保温",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "insulation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "保温杯为什么能让水凉得慢？",
          "assistant": "它尽量减慢热量传出去，所以热水能热得久一些。还可以想想：冰水放进去，会不会也被保温杯加热？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用两只相同塑料杯装成人确认不烫的温水，一只外包干毛巾，比较一段时间后的温度；不使用开水。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：它尽量减慢热量传出去，所以热水能热得久一些。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "insulation-05",
      "group_id": "insulation",
      "category": "engineering",
      "topic": "保温",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "insulation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "保温杯里面藏着不插电的小火炉？",
          "assistant": "普通保温杯不靠火炉加热，它主要减慢热量交换；放久了水仍会逐渐接近周围温度。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用两只相同塑料杯装成人确认不烫的温水，一只外包干毛巾，比较一段时间后的温度；不使用开水。热不是一群小人，保温结构对不同传热方式的作用也不相同。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "insulation-06",
      "group_id": "insulation",
      "category": "engineering",
      "topic": "保温",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "insulation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "保温杯为什么能让水凉得慢？先用一句话说。",
          "assistant": "它尽量减慢热量传出去，所以热水能热得久一些。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "保温结构可减弱传导、对流和辐射换热；真空层不能完全阻止所有热传递，普通保温杯不会主动产生热量。打个比方：像给热量离开的路设置障碍，但不是把所有路彻底封死。热不是一群小人，保温结构对不同传热方式的作用也不相同。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "insulation-07",
      "group_id": "insulation",
      "category": "engineering",
      "topic": "保温",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "insulation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "保温杯为什么能让水凉得慢？能打个比方吗？",
          "assistant": "它尽量减慢热量传出去，所以热水能热得久一些。像给热量离开的路设置障碍，但不是把所有路彻底封死。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "热不是一群小人，保温结构对不同传热方式的作用也不相同。所以要记住的科学解释是：保温结构可减弱传导、对流和辐射换热；真空层不能完全阻止所有热传递，普通保温杯不会主动产生热量。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "insulation-08",
      "group_id": "insulation",
      "category": "engineering",
      "topic": "保温",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "insulation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "保温杯为什么能让水凉得慢？",
          "assistant": "它尽量减慢热量传出去，所以热水能热得久一些。保温结构可减弱传导、对流和辐射换热；真空层不能完全阻止所有热传递，普通保温杯不会主动产生热量。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用两只相同塑料杯装成人确认不烫的温水，一只外包干毛巾，比较一段时间后的温度；不使用开水。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。保温的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "insulation-09",
      "group_id": "insulation",
      "category": "engineering",
      "topic": "保温",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "insulation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "保温杯为什么能让水凉得慢？不要考我，也不要反问。",
          "assistant": "保温结构可减弱传导、对流和辐射换热；真空层不能完全阻止所有热传递，普通保温杯不会主动产生热量。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：保温杯里面藏着不插电的小火炉？",
          "assistant": "普通保温杯不靠火炉加热，它主要减慢热量交换；放久了水仍会逐渐接近周围温度。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "insulation-10",
      "group_id": "insulation",
      "category": "engineering",
      "topic": "保温",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "insulation"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "保温杯为什么能让水凉得慢？",
          "assistant": "它尽量减慢热量传出去，所以热水能热得久一些。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "冰水放进去，会不会也被保温杯加热？",
          "assistant": "保温杯也能减慢外界热量进入，因此能让冷水保持较冷更久；它不是只认得热水。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于保温，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "solar-cell-01",
      "group_id": "solar-cell",
      "category": "engineering",
      "topic": "太阳能电池",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "solar-cell"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳能板为什么能发电？",
          "assistant": "太阳能电池能把光带来的部分能量转成电能。光伏电池利用半导体中的光生载流子等过程产生电流；发电量受光照、温度和电路等影响，太阳能板与储能电池不是同一部件。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "太阳能板白天吃光，晚上自己一定还有电？",
          "assistant": "太阳能板主要在有合适光照时发电；夜间是否能供电，要看是否另配电池等储能和供电系统。还可以接着想：阴天就一点电也发不出来吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "solar-cell-02",
      "group_id": "solar-cell",
      "category": "engineering",
      "topic": "太阳能电池",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "solar-cell"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳能板为什么能发电？",
          "assistant": "光伏电池利用半导体中的光生载流子等过程产生电流；发电量受光照、温度和电路等影响，太阳能板与储能电池不是同一部件。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像把一种能量换成另一种形式的小转换站。它不是把阳光装进盒子里，也不能把收到的光能百分之百转成电能。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "solar-cell-03",
      "group_id": "solar-cell",
      "category": "engineering",
      "topic": "太阳能电池",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "solar-cell"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳能板为什么能发电？",
          "assistant": "太阳能电池能把光带来的部分能量转成电能。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "阴天就一点电也发不出来吗？",
          "assistant": "未必。阴天仍有散射光，可能继续发电但功率较低，具体取决于光照和设备条件。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "solar-cell-04",
      "group_id": "solar-cell",
      "category": "engineering",
      "topic": "太阳能电池",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "solar-cell"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳能板为什么能发电？",
          "assistant": "太阳能电池能把光带来的部分能量转成电能。还可以想想：阴天就一点电也发不出来吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "看教学太阳能玩具在明亮处和遮挡后的表现，由成人操作低压套件；不接市电、不拆储能电池。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：太阳能电池能把光带来的部分能量转成电能。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "solar-cell-05",
      "group_id": "solar-cell",
      "category": "engineering",
      "topic": "太阳能电池",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "solar-cell"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳能板白天吃光，晚上自己一定还有电？",
          "assistant": "太阳能板主要在有合适光照时发电；夜间是否能供电，要看是否另配电池等储能和供电系统。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "看教学太阳能玩具在明亮处和遮挡后的表现，由成人操作低压套件；不接市电、不拆储能电池。它不是把阳光装进盒子里，也不能把收到的光能百分之百转成电能。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "solar-cell-06",
      "group_id": "solar-cell",
      "category": "engineering",
      "topic": "太阳能电池",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "solar-cell"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳能板为什么能发电？先用一句话说。",
          "assistant": "太阳能电池能把光带来的部分能量转成电能。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "光伏电池利用半导体中的光生载流子等过程产生电流；发电量受光照、温度和电路等影响，太阳能板与储能电池不是同一部件。打个比方：像把一种能量换成另一种形式的小转换站。它不是把阳光装进盒子里，也不能把收到的光能百分之百转成电能。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "solar-cell-07",
      "group_id": "solar-cell",
      "category": "engineering",
      "topic": "太阳能电池",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "solar-cell"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳能板为什么能发电？能打个比方吗？",
          "assistant": "太阳能电池能把光带来的部分能量转成电能。像把一种能量换成另一种形式的小转换站。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "它不是把阳光装进盒子里，也不能把收到的光能百分之百转成电能。所以要记住的科学解释是：光伏电池利用半导体中的光生载流子等过程产生电流；发电量受光照、温度和电路等影响，太阳能板与储能电池不是同一部件。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "solar-cell-08",
      "group_id": "solar-cell",
      "category": "engineering",
      "topic": "太阳能电池",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "solar-cell"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳能板为什么能发电？",
          "assistant": "光伏电池利用半导体中的光生载流子等过程产生电流；发电量受光照、温度和电路等影响，太阳能板与储能电池不是同一部件。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "看教学太阳能玩具在明亮处和遮挡后的表现，由成人操作低压套件；不接市电、不拆储能电池。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。太阳能电池的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "solar-cell-09",
      "group_id": "solar-cell",
      "category": "engineering",
      "topic": "太阳能电池",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "solar-cell"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳能板为什么能发电？不要考我，也不要反问。",
          "assistant": "太阳能电池能把光带来的部分能量转成电能。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：太阳能板白天吃光，晚上自己一定还有电？",
          "assistant": "太阳能板主要在有合适光照时发电；夜间是否能供电，要看是否另配电池等储能和供电系统。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "solar-cell-10",
      "group_id": "solar-cell",
      "category": "engineering",
      "topic": "太阳能电池",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "solar-cell"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳能板为什么能发电？",
          "assistant": "太阳能电池能把光带来的部分能量转成电能。光伏电池利用半导体中的光生载流子等过程产生电流；发电量受光照、温度和电路等影响，太阳能板与储能电池不是同一部件。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "阴天就一点电也发不出来吗？",
          "assistant": "未必。阴天仍有散射光，可能继续发电但功率较低，具体取决于光照和设备条件。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于太阳能电池，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    }
  ],
  "val": [
    {
      "id": "galaxy-01",
      "group_id": "galaxy",
      "category": "space",
      "topic": "星系",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "galaxy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "银河系里面只有太阳吗？",
          "assistant": "太阳只是银河系里许多恒星中的一颗，银河系还包含气体、尘埃等。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "太阳系和银河系是同一个东西？",
          "assistant": "它们大小层级不同：太阳和围绕它的天体组成太阳系，太阳系位于更大的银河系中。还可以接着想：别的星系也有恒星吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "galaxy-02",
      "group_id": "galaxy",
      "category": "space",
      "topic": "星系",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "galaxy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "银河系里面只有太阳吗？",
          "assistant": "太阳只是银河系里许多恒星中的一颗，银河系还包含气体、尘埃等。星系是由引力联系的大量恒星、气体、尘埃及暗物质组成的系统；太阳系只是银河系的一小部分。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "好比房间在楼里，太阳系在银河系里；先记住这种包含关系。星系不是有墙的楼，恒星会运动；比方不能给出真实距离比例。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "galaxy-03",
      "group_id": "galaxy",
      "category": "space",
      "topic": "星系",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "galaxy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "银河系里面只有太阳吗？",
          "assistant": "星系是由引力联系的大量恒星、气体、尘埃及暗物质组成的系统；太阳系只是银河系的一小部分。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "别的星系也有恒星吗？",
          "assistant": "有。星系可以拥有大量恒星，形状和大小各异；银河系不是唯一的星系。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "galaxy-04",
      "group_id": "galaxy",
      "category": "space",
      "topic": "星系",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "galaxy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "银河系里面只有太阳吗？",
          "assistant": "太阳只是银河系里许多恒星中的一颗，银河系还包含气体、尘埃等。还可以想想：别的星系也有恒星吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在纸上画“地球→太阳系→银河系”的包含图，箭头表示所属层级，不表示行走路线。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：太阳只是银河系里许多恒星中的一颗，银河系还包含气体、尘埃等。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "galaxy-05",
      "group_id": "galaxy",
      "category": "space",
      "topic": "星系",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "galaxy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "太阳系和银河系是同一个东西？",
          "assistant": "它们大小层级不同：太阳和围绕它的天体组成太阳系，太阳系位于更大的银河系中。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在纸上画“地球→太阳系→银河系”的包含图，箭头表示所属层级，不表示行走路线。星系不是有墙的楼，恒星会运动；比方不能给出真实距离比例。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "galaxy-06",
      "group_id": "galaxy",
      "category": "space",
      "topic": "星系",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "galaxy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "银河系里面只有太阳吗？先用一句话说。",
          "assistant": "太阳只是银河系里许多恒星中的一颗，银河系还包含气体、尘埃等。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "星系是由引力联系的大量恒星、气体、尘埃及暗物质组成的系统；太阳系只是银河系的一小部分。打个比方：好比房间在楼里，太阳系在银河系里；先记住这种包含关系。星系不是有墙的楼，恒星会运动；比方不能给出真实距离比例。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "galaxy-07",
      "group_id": "galaxy",
      "category": "space",
      "topic": "星系",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "galaxy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "银河系里面只有太阳吗？能打个比方吗？",
          "assistant": "太阳只是银河系里许多恒星中的一颗，银河系还包含气体、尘埃等。好比房间在楼里，太阳系在银河系里；先记住这种包含关系。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "星系不是有墙的楼，恒星会运动；比方不能给出真实距离比例。所以要记住的科学解释是：星系是由引力联系的大量恒星、气体、尘埃及暗物质组成的系统；太阳系只是银河系的一小部分。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "galaxy-08",
      "group_id": "galaxy",
      "category": "space",
      "topic": "星系",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "galaxy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "银河系里面只有太阳吗？",
          "assistant": "太阳只是银河系里许多恒星中的一颗，银河系还包含气体、尘埃等。星系是由引力联系的大量恒星、气体、尘埃及暗物质组成的系统；太阳系只是银河系的一小部分。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在纸上画“地球→太阳系→银河系”的包含图，箭头表示所属层级，不表示行走路线。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。星系的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "galaxy-09",
      "group_id": "galaxy",
      "category": "space",
      "topic": "星系",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "galaxy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "银河系里面只有太阳吗？不要考我，也不要反问。",
          "assistant": "星系是由引力联系的大量恒星、气体、尘埃及暗物质组成的系统；太阳系只是银河系的一小部分。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：太阳系和银河系是同一个东西？",
          "assistant": "它们大小层级不同：太阳和围绕它的天体组成太阳系，太阳系位于更大的银河系中。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "galaxy-10",
      "group_id": "galaxy",
      "category": "space",
      "topic": "星系",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "galaxy"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "银河系里面只有太阳吗？",
          "assistant": "太阳只是银河系里许多恒星中的一颗，银河系还包含气体、尘埃等。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "别的星系也有恒星吗？",
          "assistant": "有。星系可以拥有大量恒星，形状和大小各异；银河系不是唯一的星系。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于星系，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "salty-ocean-01",
      "group_id": "salty-ocean",
      "category": "earth",
      "topic": "海水盐分",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "salty-ocean"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么是咸的？",
          "assistant": "岩石中的一些物质被水带进海洋，水蒸发时大部分盐留下，海水就含有盐。河流输入和海底过程提供溶解物质，蒸发移走水而盐主要保留；盐也有移出途径，海洋盐度因地而异。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "海水是有人往里倒了食盐吗？",
          "assistant": "大量海盐来自自然过程，包括岩石风化后河流带入的溶解物质，不需要有人撒盐。还可以接着想：河水流进海里，为什么通常没那么咸？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "salty-ocean-02",
      "group_id": "salty-ocean",
      "category": "earth",
      "topic": "海水盐分",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "salty-ocean"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么是咸的？",
          "assistant": "河流输入和海底过程提供溶解物质，蒸发移走水而盐主要保留；盐也有移出途径，海洋盐度因地而异。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像晾干盐水时水逐渐离开、盐留在容器里，但海洋还不断有输入和输出。海洋不是只进不出的盐盆，也不是所有海域盐度相同。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "salty-ocean-03",
      "group_id": "salty-ocean",
      "category": "earth",
      "topic": "海水盐分",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "salty-ocean"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么是咸的？",
          "assistant": "岩石中的一些物质被水带进海洋，水蒸发时大部分盐留下，海水就含有盐。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "河水流进海里，为什么通常没那么咸？",
          "assistant": "河水也含溶解物质，但通常浓度较低；海洋长期接受输入并蒸发水，形成不同盐度。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "salty-ocean-04",
      "group_id": "salty-ocean",
      "category": "earth",
      "topic": "海水盐分",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "salty-ocean"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么是咸的？",
          "assistant": "岩石中的一些物质被水带进海洋，水蒸发时大部分盐留下，海水就含有盐。还可以想想：河水流进海里，为什么通常没那么咸？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "阅读海洋盐度图，比较河口和远洋颜色；不要用尝海水的方法收集数据。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：岩石中的一些物质被水带进海洋，水蒸发时大部分盐留下，海水就含有盐。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "salty-ocean-05",
      "group_id": "salty-ocean",
      "category": "earth",
      "topic": "海水盐分",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "salty-ocean"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水是有人往里倒了食盐吗？",
          "assistant": "大量海盐来自自然过程，包括岩石风化后河流带入的溶解物质，不需要有人撒盐。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "阅读海洋盐度图，比较河口和远洋颜色；不要用尝海水的方法收集数据。海洋不是只进不出的盐盆，也不是所有海域盐度相同。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "salty-ocean-06",
      "group_id": "salty-ocean",
      "category": "earth",
      "topic": "海水盐分",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "salty-ocean"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么是咸的？先用一句话说。",
          "assistant": "岩石中的一些物质被水带进海洋，水蒸发时大部分盐留下，海水就含有盐。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "河流输入和海底过程提供溶解物质，蒸发移走水而盐主要保留；盐也有移出途径，海洋盐度因地而异。打个比方：像晾干盐水时水逐渐离开、盐留在容器里，但海洋还不断有输入和输出。海洋不是只进不出的盐盆，也不是所有海域盐度相同。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "salty-ocean-07",
      "group_id": "salty-ocean",
      "category": "earth",
      "topic": "海水盐分",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "salty-ocean"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么是咸的？能打个比方吗？",
          "assistant": "岩石中的一些物质被水带进海洋，水蒸发时大部分盐留下，海水就含有盐。像晾干盐水时水逐渐离开、盐留在容器里，但海洋还不断有输入和输出。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "海洋不是只进不出的盐盆，也不是所有海域盐度相同。所以要记住的科学解释是：河流输入和海底过程提供溶解物质，蒸发移走水而盐主要保留；盐也有移出途径，海洋盐度因地而异。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "salty-ocean-08",
      "group_id": "salty-ocean",
      "category": "earth",
      "topic": "海水盐分",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "salty-ocean"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么是咸的？",
          "assistant": "河流输入和海底过程提供溶解物质，蒸发移走水而盐主要保留；盐也有移出途径，海洋盐度因地而异。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "阅读海洋盐度图，比较河口和远洋颜色；不要用尝海水的方法收集数据。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。海水盐分的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "salty-ocean-09",
      "group_id": "salty-ocean",
      "category": "earth",
      "topic": "海水盐分",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "salty-ocean"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么是咸的？不要考我，也不要反问。",
          "assistant": "岩石中的一些物质被水带进海洋，水蒸发时大部分盐留下，海水就含有盐。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：海水是有人往里倒了食盐吗？",
          "assistant": "大量海盐来自自然过程，包括岩石风化后河流带入的溶解物质，不需要有人撒盐。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "salty-ocean-10",
      "group_id": "salty-ocean",
      "category": "earth",
      "topic": "海水盐分",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "salty-ocean"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "海水为什么是咸的？",
          "assistant": "岩石中的一些物质被水带进海洋，水蒸发时大部分盐留下，海水就含有盐。河流输入和海底过程提供溶解物质，蒸发移走水而盐主要保留；盐也有移出途径，海洋盐度因地而异。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "河水流进海里，为什么通常没那么咸？",
          "assistant": "河水也含溶解物质，但通常浓度较低；海洋长期接受输入并蒸发水，形成不同盐度。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于海水盐分，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "camouflage-01",
      "group_id": "camouflage",
      "category": "life",
      "topic": "动物伪装",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "camouflage"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "有的昆虫为什么像叶子？",
          "assistant": "伪装涉及外形、颜色或行为与环境相似，是演化过程中形成的适应；个体不是临时想变成什么就能变成什么。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "虫子想当叶子，就努力长成叶子了？",
          "assistant": "不能这样理解。能更好隐藏的遗传特点在一些环境中更有利，经过许多代变化，形成今天的样子。还可以接着想：换到白墙上还藏得住吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "camouflage-02",
      "group_id": "camouflage",
      "category": "life",
      "topic": "动物伪装",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "camouflage"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "有的昆虫为什么像叶子？",
          "assistant": "像叶子的颜色和形状，可能让它不容易被捕食者发现。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像穿着接近背景的衣服，轮廓就不那么显眼。动物不是自己选衣服，伪装也不保证骗过所有观察者。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "camouflage-03",
      "group_id": "camouflage",
      "category": "life",
      "topic": "动物伪装",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "camouflage"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "有的昆虫为什么像叶子？",
          "assistant": "像叶子的颜色和形状，可能让它不容易被捕食者发现。伪装涉及外形、颜色或行为与环境相似，是演化过程中形成的适应；个体不是临时想变成什么就能变成什么。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "换到白墙上还藏得住吗？",
          "assistant": "未必。伪装效果取决于背景和观察者，适合树叶间的外形可能在白墙上更明显。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "camouflage-04",
      "group_id": "camouflage",
      "category": "life",
      "topic": "动物伪装",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "camouflage"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "有的昆虫为什么像叶子？",
          "assistant": "像叶子的颜色和形状，可能让它不容易被捕食者发现。还可以想想：换到白墙上还藏得住吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "在图鉴中找叶状昆虫的腿和身体轮廓，比较有背景与无背景的图片；不抓野外昆虫。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：像叶子的颜色和形状，可能让它不容易被捕食者发现。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "camouflage-05",
      "group_id": "camouflage",
      "category": "life",
      "topic": "动物伪装",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "camouflage"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "虫子想当叶子，就努力长成叶子了？",
          "assistant": "不能这样理解。能更好隐藏的遗传特点在一些环境中更有利，经过许多代变化，形成今天的样子。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "在图鉴中找叶状昆虫的腿和身体轮廓，比较有背景与无背景的图片；不抓野外昆虫。动物不是自己选衣服，伪装也不保证骗过所有观察者。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "camouflage-06",
      "group_id": "camouflage",
      "category": "life",
      "topic": "动物伪装",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "camouflage"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "有的昆虫为什么像叶子？先用一句话说。",
          "assistant": "像叶子的颜色和形状，可能让它不容易被捕食者发现。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "伪装涉及外形、颜色或行为与环境相似，是演化过程中形成的适应；个体不是临时想变成什么就能变成什么。打个比方：像穿着接近背景的衣服，轮廓就不那么显眼。动物不是自己选衣服，伪装也不保证骗过所有观察者。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "camouflage-07",
      "group_id": "camouflage",
      "category": "life",
      "topic": "动物伪装",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "camouflage"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "有的昆虫为什么像叶子？能打个比方吗？",
          "assistant": "像叶子的颜色和形状，可能让它不容易被捕食者发现。像穿着接近背景的衣服，轮廓就不那么显眼。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "动物不是自己选衣服，伪装也不保证骗过所有观察者。所以要记住的科学解释是：伪装涉及外形、颜色或行为与环境相似，是演化过程中形成的适应；个体不是临时想变成什么就能变成什么。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "camouflage-08",
      "group_id": "camouflage",
      "category": "life",
      "topic": "动物伪装",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "camouflage"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "有的昆虫为什么像叶子？",
          "assistant": "像叶子的颜色和形状，可能让它不容易被捕食者发现。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "在图鉴中找叶状昆虫的腿和身体轮廓，比较有背景与无背景的图片；不抓野外昆虫。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。动物伪装的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "camouflage-09",
      "group_id": "camouflage",
      "category": "life",
      "topic": "动物伪装",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "camouflage"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "有的昆虫为什么像叶子？不要考我，也不要反问。",
          "assistant": "像叶子的颜色和形状，可能让它不容易被捕食者发现。伪装涉及外形、颜色或行为与环境相似，是演化过程中形成的适应；个体不是临时想变成什么就能变成什么。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：虫子想当叶子，就努力长成叶子了？",
          "assistant": "不能这样理解。能更好隐藏的遗传特点在一些环境中更有利，经过许多代变化，形成今天的样子。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "camouflage-10",
      "group_id": "camouflage",
      "category": "life",
      "topic": "动物伪装",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "camouflage"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "有的昆虫为什么像叶子？",
          "assistant": "伪装涉及外形、颜色或行为与环境相似，是演化过程中形成的适应；个体不是临时想变成什么就能变成什么。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "换到白墙上还藏得住吗？",
          "assistant": "未必。伪装效果取决于背景和观察者，适合树叶间的外形可能在白墙上更明显。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于动物伪装，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "inertia-01",
      "group_id": "inertia",
      "category": "physics",
      "topic": "惯性",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "inertia"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车一刹住，人怎么往前倾？",
          "assistant": "车先慢下来，身体还倾向保持原来的运动，所以相对车会向前。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "车里有个看不见的力专门向前推我？",
          "assistant": "不必假设一个新推力。身体原本就在前进，车减速时身体不会瞬间自动同样减速。还可以接着想：匀速开车时为什么不一直前倾？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "inertia-02",
      "group_id": "inertia",
      "category": "physics",
      "topic": "惯性",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "inertia"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车一刹住，人怎么往前倾？",
          "assistant": "车先慢下来，身体还倾向保持原来的运动，所以相对车会向前。惯性是物体保持原有运动状态的性质；改变速度需要合力，安全带提供约束，惯性不是额外向前推人的一种力。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像滑行的玩具不会因为旁边的东西停了就立刻停下，需要相互作用改变运动。玩具和人的受力细节不同，不能因此在真车上故意不系安全带做实验。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "inertia-03",
      "group_id": "inertia",
      "category": "physics",
      "topic": "惯性",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "inertia"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车一刹住，人怎么往前倾？",
          "assistant": "惯性是物体保持原有运动状态的性质；改变速度需要合力，安全带提供约束，惯性不是额外向前推人的一种力。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "匀速开车时为什么不一直前倾？",
          "assistant": "匀速直线运动时人和车可保持相同速度；明显的相对变化通常与加速、减速或转弯有关。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "inertia-04",
      "group_id": "inertia",
      "category": "physics",
      "topic": "惯性",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "inertia"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车一刹住，人怎么往前倾？",
          "assistant": "车先慢下来，身体还倾向保持原来的运动，所以相对车会向前。还可以想想：匀速开车时为什么不一直前倾？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "看安全带教学动画，比较车和乘员的运动箭头；乘车按要求使用安全带或儿童约束装置。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：车先慢下来，身体还倾向保持原来的运动，所以相对车会向前。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "inertia-05",
      "group_id": "inertia",
      "category": "physics",
      "topic": "惯性",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "inertia"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车里有个看不见的力专门向前推我？",
          "assistant": "不必假设一个新推力。身体原本就在前进，车减速时身体不会瞬间自动同样减速。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "看安全带教学动画，比较车和乘员的运动箭头；乘车按要求使用安全带或儿童约束装置。玩具和人的受力细节不同，不能因此在真车上故意不系安全带做实验。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "inertia-06",
      "group_id": "inertia",
      "category": "physics",
      "topic": "惯性",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "inertia"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车一刹住，人怎么往前倾？先用一句话说。",
          "assistant": "车先慢下来，身体还倾向保持原来的运动，所以相对车会向前。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "惯性是物体保持原有运动状态的性质；改变速度需要合力，安全带提供约束，惯性不是额外向前推人的一种力。打个比方：像滑行的玩具不会因为旁边的东西停了就立刻停下，需要相互作用改变运动。玩具和人的受力细节不同，不能因此在真车上故意不系安全带做实验。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "inertia-07",
      "group_id": "inertia",
      "category": "physics",
      "topic": "惯性",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "inertia"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车一刹住，人怎么往前倾？能打个比方吗？",
          "assistant": "车先慢下来，身体还倾向保持原来的运动，所以相对车会向前。像滑行的玩具不会因为旁边的东西停了就立刻停下，需要相互作用改变运动。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "玩具和人的受力细节不同，不能因此在真车上故意不系安全带做实验。所以要记住的科学解释是：惯性是物体保持原有运动状态的性质；改变速度需要合力，安全带提供约束，惯性不是额外向前推人的一种力。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "inertia-08",
      "group_id": "inertia",
      "category": "physics",
      "topic": "惯性",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "inertia"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车一刹住，人怎么往前倾？",
          "assistant": "车先慢下来，身体还倾向保持原来的运动，所以相对车会向前。惯性是物体保持原有运动状态的性质；改变速度需要合力，安全带提供约束，惯性不是额外向前推人的一种力。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "看安全带教学动画，比较车和乘员的运动箭头；乘车按要求使用安全带或儿童约束装置。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。惯性的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "inertia-09",
      "group_id": "inertia",
      "category": "physics",
      "topic": "惯性",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "inertia"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车一刹住，人怎么往前倾？不要考我，也不要反问。",
          "assistant": "惯性是物体保持原有运动状态的性质；改变速度需要合力，安全带提供约束，惯性不是额外向前推人的一种力。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：车里有个看不见的力专门向前推我？",
          "assistant": "不必假设一个新推力。身体原本就在前进，车减速时身体不会瞬间自动同样减速。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "inertia-10",
      "group_id": "inertia",
      "category": "physics",
      "topic": "惯性",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "inertia"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "车一刹住，人怎么往前倾？",
          "assistant": "车先慢下来，身体还倾向保持原来的运动，所以相对车会向前。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "匀速开车时为什么不一直前倾？",
          "assistant": "匀速直线运动时人和车可保持相同速度；明显的相对变化通常与加速、减速或转弯有关。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于惯性，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "zipper-01",
      "group_id": "zipper",
      "category": "engineering",
      "topic": "拉链",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "zipper"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "拉链一拉为什么就合上了？",
          "assistant": "拉头引导两边链齿靠拢、交错卡合，拉回时又把它们分开。拉头内的通道控制链齿进入和分离的路径，可靠闭合依赖链齿形状与排列；不同拉链结构细节不同。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "拉链是磁铁把两边吸在一起？",
          "assistant": "常见拉链主要靠链齿的机械咬合，并不需要磁铁，塑料链齿也能工作。还可以接着想：卡住时越用力拉越好吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "zipper-02",
      "group_id": "zipper",
      "category": "engineering",
      "topic": "拉链",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "zipper"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "拉链一拉为什么就合上了？",
          "assistant": "拉头内的通道控制链齿进入和分离的路径，可靠闭合依赖链齿形状与排列；不同拉链结构细节不同。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像两队形状相配的小零件按顺序交错站好。链齿不会自己排队，是拉头和齿形约束了运动；并非两边随意挤在一起就能闭合。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "zipper-03",
      "group_id": "zipper",
      "category": "engineering",
      "topic": "拉链",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "zipper"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "拉链一拉为什么就合上了？",
          "assistant": "拉头引导两边链齿靠拢、交错卡合，拉回时又把它们分开。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "卡住时越用力拉越好吗？",
          "assistant": "不一定，可能夹住布料或链齿错位。先停下，请成人检查原因，硬拉可能损坏或夹伤。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "zipper-04",
      "group_id": "zipper",
      "category": "engineering",
      "topic": "拉链",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "zipper"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "拉链一拉为什么就合上了？",
          "assistant": "拉头引导两边链齿靠拢、交错卡合，拉回时又把它们分开。还可以想想：卡住时越用力拉越好吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用放在桌上的旧笔袋慢慢拉动拉头，看链齿合拢的位置；手指远离夹口，不拉身上贴肤的拉链。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：拉头引导两边链齿靠拢、交错卡合，拉回时又把它们分开。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "zipper-05",
      "group_id": "zipper",
      "category": "engineering",
      "topic": "拉链",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "zipper"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "拉链是磁铁把两边吸在一起？",
          "assistant": "常见拉链主要靠链齿的机械咬合，并不需要磁铁，塑料链齿也能工作。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用放在桌上的旧笔袋慢慢拉动拉头，看链齿合拢的位置；手指远离夹口，不拉身上贴肤的拉链。链齿不会自己排队，是拉头和齿形约束了运动；并非两边随意挤在一起就能闭合。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "zipper-06",
      "group_id": "zipper",
      "category": "engineering",
      "topic": "拉链",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "zipper"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "拉链一拉为什么就合上了？先用一句话说。",
          "assistant": "拉头引导两边链齿靠拢、交错卡合，拉回时又把它们分开。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "拉头内的通道控制链齿进入和分离的路径，可靠闭合依赖链齿形状与排列；不同拉链结构细节不同。打个比方：像两队形状相配的小零件按顺序交错站好。链齿不会自己排队，是拉头和齿形约束了运动；并非两边随意挤在一起就能闭合。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "zipper-07",
      "group_id": "zipper",
      "category": "engineering",
      "topic": "拉链",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "zipper"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "拉链一拉为什么就合上了？能打个比方吗？",
          "assistant": "拉头引导两边链齿靠拢、交错卡合，拉回时又把它们分开。像两队形状相配的小零件按顺序交错站好。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "链齿不会自己排队，是拉头和齿形约束了运动；并非两边随意挤在一起就能闭合。所以要记住的科学解释是：拉头内的通道控制链齿进入和分离的路径，可靠闭合依赖链齿形状与排列；不同拉链结构细节不同。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "zipper-08",
      "group_id": "zipper",
      "category": "engineering",
      "topic": "拉链",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "zipper"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "拉链一拉为什么就合上了？",
          "assistant": "拉头内的通道控制链齿进入和分离的路径，可靠闭合依赖链齿形状与排列；不同拉链结构细节不同。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用放在桌上的旧笔袋慢慢拉动拉头，看链齿合拢的位置；手指远离夹口，不拉身上贴肤的拉链。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。拉链的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "zipper-09",
      "group_id": "zipper",
      "category": "engineering",
      "topic": "拉链",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "zipper"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "拉链一拉为什么就合上了？不要考我，也不要反问。",
          "assistant": "拉头引导两边链齿靠拢、交错卡合，拉回时又把它们分开。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：拉链是磁铁把两边吸在一起？",
          "assistant": "常见拉链主要靠链齿的机械咬合，并不需要磁铁，塑料链齿也能工作。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "zipper-10",
      "group_id": "zipper",
      "category": "engineering",
      "topic": "拉链",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "zipper"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "拉链一拉为什么就合上了？",
          "assistant": "拉头引导两边链齿靠拢、交错卡合，拉回时又把它们分开。拉头内的通道控制链齿进入和分离的路径，可靠闭合依赖链齿形状与排列；不同拉链结构细节不同。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "卡住时越用力拉越好吗？",
          "assistant": "不一定，可能夹住布料或链齿错位。先停下，请成人检查原因，硬拉可能损坏或夹伤。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于拉链，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    }
  ],
  "test": [
    {
      "id": "exoplanet-01",
      "group_id": "exoplanet",
      "category": "space",
      "topic": "系外行星",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "exoplanet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "别的恒星旁边也有行星吗？",
          "assistant": "有，太阳系以外的行星叫系外行星，科学家已经发现很多。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "在适居带就肯定住着外星人？",
          "assistant": "适居带只是考虑液态水可能存在的一类距离条件，还要看大气等因素；这不能证明生命存在。还可以接着想：看不清行星，怎么知道它经过恒星前面？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "exoplanet-02",
      "group_id": "exoplanet",
      "category": "space",
      "topic": "系外行星",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "exoplanet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "别的恒星旁边也有行星吗？",
          "assistant": "有，太阳系以外的行星叫系外行星，科学家已经发现很多。系外行星可用凌星、径向速度等方法发现；适居带位置不等于已发现生命或确认宜居。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像看到一间屋子有合适的温度，还不能据此断定里面有人住。行星环境比房间复杂，适居带也不是一条保证安全的围栏。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "exoplanet-03",
      "group_id": "exoplanet",
      "category": "space",
      "topic": "系外行星",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "exoplanet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "别的恒星旁边也有行星吗？",
          "assistant": "系外行星可用凌星、径向速度等方法发现；适居带位置不等于已发现生命或确认宜居。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "看不清行星，怎么知道它经过恒星前面？",
          "assistant": "科学家测量恒星亮度的细微、周期性变化，并结合其他证据排除干扰，不只凭一张模糊照片判断。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "exoplanet-04",
      "group_id": "exoplanet",
      "category": "space",
      "topic": "系外行星",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "exoplanet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "别的恒星旁边也有行星吗？",
          "assistant": "有，太阳系以外的行星叫系外行星，科学家已经发现很多。还可以想想：看不清行星，怎么知道它经过恒星前面？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用纸圆挡住一小部分普通灯的示意图，画亮度稍降的曲线，理解凌星思路；不要直视强灯。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：有，太阳系以外的行星叫系外行星，科学家已经发现很多。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "exoplanet-05",
      "group_id": "exoplanet",
      "category": "space",
      "topic": "系外行星",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "exoplanet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "在适居带就肯定住着外星人？",
          "assistant": "适居带只是考虑液态水可能存在的一类距离条件，还要看大气等因素；这不能证明生命存在。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用纸圆挡住一小部分普通灯的示意图，画亮度稍降的曲线，理解凌星思路；不要直视强灯。行星环境比房间复杂，适居带也不是一条保证安全的围栏。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "exoplanet-06",
      "group_id": "exoplanet",
      "category": "space",
      "topic": "系外行星",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "exoplanet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "别的恒星旁边也有行星吗？先用一句话说。",
          "assistant": "有，太阳系以外的行星叫系外行星，科学家已经发现很多。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "系外行星可用凌星、径向速度等方法发现；适居带位置不等于已发现生命或确认宜居。打个比方：像看到一间屋子有合适的温度，还不能据此断定里面有人住。行星环境比房间复杂，适居带也不是一条保证安全的围栏。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "exoplanet-07",
      "group_id": "exoplanet",
      "category": "space",
      "topic": "系外行星",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "exoplanet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "别的恒星旁边也有行星吗？能打个比方吗？",
          "assistant": "有，太阳系以外的行星叫系外行星，科学家已经发现很多。像看到一间屋子有合适的温度，还不能据此断定里面有人住。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "行星环境比房间复杂，适居带也不是一条保证安全的围栏。所以要记住的科学解释是：系外行星可用凌星、径向速度等方法发现；适居带位置不等于已发现生命或确认宜居。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "exoplanet-08",
      "group_id": "exoplanet",
      "category": "space",
      "topic": "系外行星",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "exoplanet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "别的恒星旁边也有行星吗？",
          "assistant": "有，太阳系以外的行星叫系外行星，科学家已经发现很多。系外行星可用凌星、径向速度等方法发现；适居带位置不等于已发现生命或确认宜居。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用纸圆挡住一小部分普通灯的示意图，画亮度稍降的曲线，理解凌星思路；不要直视强灯。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。系外行星的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "exoplanet-09",
      "group_id": "exoplanet",
      "category": "space",
      "topic": "系外行星",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "exoplanet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "别的恒星旁边也有行星吗？不要考我，也不要反问。",
          "assistant": "系外行星可用凌星、径向速度等方法发现；适居带位置不等于已发现生命或确认宜居。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：在适居带就肯定住着外星人？",
          "assistant": "适居带只是考虑液态水可能存在的一类距离条件，还要看大气等因素；这不能证明生命存在。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "exoplanet-10",
      "group_id": "exoplanet",
      "category": "space",
      "topic": "系外行星",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "exoplanet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "别的恒星旁边也有行星吗？",
          "assistant": "有，太阳系以外的行星叫系外行星，科学家已经发现很多。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "看不清行星，怎么知道它经过恒星前面？",
          "assistant": "科学家测量恒星亮度的细微、周期性变化，并结合其他证据排除干扰，不只凭一张模糊照片判断。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于系外行星，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "earth-magnet-01",
      "group_id": "earth-magnet",
      "category": "earth",
      "topic": "地磁场",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "earth-magnet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "指南针为什么能指方向？",
          "assistant": "指南针的小磁针会受到地球磁场影响，转向大致的南北方向。地球磁场主要与外核导电流体运动有关；磁北不等于地理北，附近磁铁和金属物也可能干扰指南针。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "地球中心藏着一根永远不动的大磁铁？",
          "assistant": "大磁铁是便于画图的近似。真实地磁场主要和外核流体运动有关，而且会变化。还可以接着想：手机旁的指针转偏了，是地球突然变了吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "earth-magnet-02",
      "group_id": "earth-magnet",
      "category": "earth",
      "topic": "地磁场",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "earth-magnet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "指南针为什么能指方向？",
          "assistant": "地球磁场主要与外核导电流体运动有关；磁北不等于地理北，附近磁铁和金属物也可能干扰指南针。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "可以把磁场画成帮助理解方向的线，磁针沿当地磁场方向转动。磁力线不是能抓住的绳子，地磁场也不是简单、固定的条形磁铁。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "earth-magnet-03",
      "group_id": "earth-magnet",
      "category": "earth",
      "topic": "地磁场",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "earth-magnet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "指南针为什么能指方向？",
          "assistant": "指南针的小磁针会受到地球磁场影响，转向大致的南北方向。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "手机旁的指针转偏了，是地球突然变了吗？",
          "assistant": "更应先检查附近磁性物体或电器的干扰，不能根据一次局部偏转判断整个地球磁场改变。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "earth-magnet-04",
      "group_id": "earth-magnet",
      "category": "earth",
      "topic": "地磁场",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "earth-magnet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "指南针为什么能指方向？",
          "assistant": "指南针的小磁针会受到地球磁场影响，转向大致的南北方向。还可以想想：手机旁的指针转偏了，是地球突然变了吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "由成人提供普通指南针，在远离电器和金属桌面的安全室内观察；不要拆磁针或吞食磁体。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：指南针的小磁针会受到地球磁场影响，转向大致的南北方向。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "earth-magnet-05",
      "group_id": "earth-magnet",
      "category": "earth",
      "topic": "地磁场",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "earth-magnet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "地球中心藏着一根永远不动的大磁铁？",
          "assistant": "大磁铁是便于画图的近似。真实地磁场主要和外核流体运动有关，而且会变化。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "由成人提供普通指南针，在远离电器和金属桌面的安全室内观察；不要拆磁针或吞食磁体。磁力线不是能抓住的绳子，地磁场也不是简单、固定的条形磁铁。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "earth-magnet-06",
      "group_id": "earth-magnet",
      "category": "earth",
      "topic": "地磁场",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "earth-magnet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "指南针为什么能指方向？先用一句话说。",
          "assistant": "指南针的小磁针会受到地球磁场影响，转向大致的南北方向。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "地球磁场主要与外核导电流体运动有关；磁北不等于地理北，附近磁铁和金属物也可能干扰指南针。打个比方：可以把磁场画成帮助理解方向的线，磁针沿当地磁场方向转动。磁力线不是能抓住的绳子，地磁场也不是简单、固定的条形磁铁。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "earth-magnet-07",
      "group_id": "earth-magnet",
      "category": "earth",
      "topic": "地磁场",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "earth-magnet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "指南针为什么能指方向？能打个比方吗？",
          "assistant": "指南针的小磁针会受到地球磁场影响，转向大致的南北方向。可以把磁场画成帮助理解方向的线，磁针沿当地磁场方向转动。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "磁力线不是能抓住的绳子，地磁场也不是简单、固定的条形磁铁。所以要记住的科学解释是：地球磁场主要与外核导电流体运动有关；磁北不等于地理北，附近磁铁和金属物也可能干扰指南针。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "earth-magnet-08",
      "group_id": "earth-magnet",
      "category": "earth",
      "topic": "地磁场",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "earth-magnet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "指南针为什么能指方向？",
          "assistant": "地球磁场主要与外核导电流体运动有关；磁北不等于地理北，附近磁铁和金属物也可能干扰指南针。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "由成人提供普通指南针，在远离电器和金属桌面的安全室内观察；不要拆磁针或吞食磁体。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。地磁场的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "earth-magnet-09",
      "group_id": "earth-magnet",
      "category": "earth",
      "topic": "地磁场",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "earth-magnet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "指南针为什么能指方向？不要考我，也不要反问。",
          "assistant": "指南针的小磁针会受到地球磁场影响，转向大致的南北方向。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：地球中心藏着一根永远不动的大磁铁？",
          "assistant": "大磁铁是便于画图的近似。真实地磁场主要和外核流体运动有关，而且会变化。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "earth-magnet-10",
      "group_id": "earth-magnet",
      "category": "earth",
      "topic": "地磁场",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "earth-magnet"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "指南针为什么能指方向？",
          "assistant": "指南针的小磁针会受到地球磁场影响，转向大致的南北方向。地球磁场主要与外核导电流体运动有关；磁北不等于地理北，附近磁铁和金属物也可能干扰指南针。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "手机旁的指针转偏了，是地球突然变了吗？",
          "assistant": "更应先检查附近磁性物体或电器的干扰，不能根据一次局部偏转判断整个地球磁场改变。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于地磁场，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "coral-01",
      "group_id": "coral",
      "category": "life",
      "topic": "珊瑚",
      "grade_band": "5-6",
      "scenario": "repair_misconception",
      "fact_ids": [
        "coral"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "珊瑚像小树，它是植物吗？",
          "assistant": "造礁珊瑚多与微小藻类共生，藻类提供部分有机物；珊瑚白化涉及共生藻减少等，不等于全部立即死亡。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "不会走路、长着枝杈的一定是植物？",
          "assistant": "不能用走不走路或有没有枝杈来分类。珊瑚虫能捕食，是动物；树枝般外形容易让我们猜错。还可以接着想：珊瑚变白就一定已经死了吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "coral-02",
      "group_id": "coral",
      "category": "life",
      "topic": "珊瑚",
      "grade_band": "1-2",
      "scenario": "change_explanation",
      "fact_ids": [
        "coral"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "珊瑚像小树，它是植物吗？",
          "assistant": "珊瑚的主体是小动物珊瑚虫，许多珊瑚虫聚在一起形成群体。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像许多小住户住在连接的房子里，群体外形可能像树。珊瑚虫不是人，骨骼也不是人工建筑；比喻只说明群体由许多个体组成。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "coral-03",
      "group_id": "coral",
      "category": "life",
      "topic": "珊瑚",
      "grade_band": "3-4",
      "scenario": "follow_child_question",
      "fact_ids": [
        "coral"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "珊瑚像小树，它是植物吗？",
          "assistant": "珊瑚的主体是小动物珊瑚虫，许多珊瑚虫聚在一起形成群体。造礁珊瑚多与微小藻类共生，藻类提供部分有机物；珊瑚白化涉及共生藻减少等，不等于全部立即死亡。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "珊瑚变白就一定已经死了吗？",
          "assistant": "不一定。白化说明它处于压力状态，有些在条件改善后可能恢复，但持续白化会增加死亡风险。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "coral-04",
      "group_id": "coral",
      "category": "life",
      "topic": "珊瑚",
      "grade_band": "5-6",
      "scenario": "optional_observation",
      "fact_ids": [
        "coral"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "珊瑚像小树，它是植物吗？",
          "assistant": "珊瑚的主体是小动物珊瑚虫，许多珊瑚虫聚在一起形成群体。还可以想想：珊瑚变白就一定已经死了吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "看海洋机构拍摄的珊瑚虫触手录像；不触摸、采集或购买来历不明的野生珊瑚。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：珊瑚的主体是小动物珊瑚虫，许多珊瑚虫聚在一起形成群体。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "coral-05",
      "group_id": "coral",
      "category": "life",
      "topic": "珊瑚",
      "grade_band": "1-2",
      "scenario": "test_a_guess",
      "fact_ids": [
        "coral"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "不会走路、长着枝杈的一定是植物？",
          "assistant": "不能用走不走路或有没有枝杈来分类。珊瑚虫能捕食，是动物；树枝般外形容易让我们猜错。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "看海洋机构拍摄的珊瑚虫触手录像；不触摸、采集或购买来历不明的野生珊瑚。珊瑚虫不是人，骨骼也不是人工建筑；比喻只说明群体由许多个体组成。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "coral-06",
      "group_id": "coral",
      "category": "life",
      "topic": "珊瑚",
      "grade_band": "3-4",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "coral"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "珊瑚像小树，它是植物吗？先用一句话说。",
          "assistant": "珊瑚的主体是小动物珊瑚虫，许多珊瑚虫聚在一起形成群体。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "造礁珊瑚多与微小藻类共生，藻类提供部分有机物；珊瑚白化涉及共生藻减少等，不等于全部立即死亡。打个比方：像许多小住户住在连接的房子里，群体外形可能像树。珊瑚虫不是人，骨骼也不是人工建筑；比喻只说明群体由许多个体组成。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "coral-07",
      "group_id": "coral",
      "category": "life",
      "topic": "珊瑚",
      "grade_band": "5-6",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "coral"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "珊瑚像小树，它是植物吗？能打个比方吗？",
          "assistant": "珊瑚的主体是小动物珊瑚虫，许多珊瑚虫聚在一起形成群体。像许多小住户住在连接的房子里，群体外形可能像树。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "珊瑚虫不是人，骨骼也不是人工建筑；比喻只说明群体由许多个体组成。所以要记住的科学解释是：造礁珊瑚多与微小藻类共生，藻类提供部分有机物；珊瑚白化涉及共生藻减少等，不等于全部立即死亡。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "coral-08",
      "group_id": "coral",
      "category": "life",
      "topic": "珊瑚",
      "grade_band": "1-2",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "coral"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "珊瑚像小树，它是植物吗？",
          "assistant": "珊瑚的主体是小动物珊瑚虫，许多珊瑚虫聚在一起形成群体。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "看海洋机构拍摄的珊瑚虫触手录像；不触摸、采集或购买来历不明的野生珊瑚。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。珊瑚的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "coral-09",
      "group_id": "coral",
      "category": "life",
      "topic": "珊瑚",
      "grade_band": "3-4",
      "scenario": "no_quiz",
      "fact_ids": [
        "coral"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "珊瑚像小树，它是植物吗？不要考我，也不要反问。",
          "assistant": "珊瑚的主体是小动物珊瑚虫，许多珊瑚虫聚在一起形成群体。造礁珊瑚多与微小藻类共生，藻类提供部分有机物；珊瑚白化涉及共生藻减少等，不等于全部立即死亡。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：不会走路、长着枝杈的一定是植物？",
          "assistant": "不能用走不走路或有没有枝杈来分类。珊瑚虫能捕食，是动物；树枝般外形容易让我们猜错。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "coral-10",
      "group_id": "coral",
      "category": "life",
      "topic": "珊瑚",
      "grade_band": "5-6",
      "scenario": "end_after_followup",
      "fact_ids": [
        "coral"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "珊瑚像小树，它是植物吗？",
          "assistant": "造礁珊瑚多与微小藻类共生，藻类提供部分有机物；珊瑚白化涉及共生藻减少等，不等于全部立即死亡。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "珊瑚变白就一定已经死了吗？",
          "assistant": "不一定。白化说明它处于压力状态，有些在条件改善后可能恢复，但持续白化会增加死亡风险。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于珊瑚，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "static-01",
      "group_id": "static",
      "category": "physics",
      "topic": "静电",
      "grade_band": "1-2",
      "scenario": "repair_misconception",
      "fact_ids": [
        "static"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "梳子梳头后为什么能吸小纸屑？",
          "assistant": "梳子和头发接触摩擦后可能带电，能对附近小纸屑产生电的作用。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "纸屑被吸住，说明它本来一定带相反的电？",
          "assistant": "不一定。原本整体中性的纸屑也可能因电荷分布改变而被吸引，不能只凭吸引判断原先电性。还可以接着想：今天吸不起来，是静电不存在了吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "static-02",
      "group_id": "static",
      "category": "physics",
      "topic": "静电",
      "grade_band": "3-4",
      "scenario": "change_explanation",
      "fact_ids": [
        "static"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "梳子梳头后为什么能吸小纸屑？",
          "assistant": "梳子和头发接触摩擦后可能带电，能对附近小纸屑产生电的作用。接触摩擦可导致电荷转移；带电物体能使中性物体的电荷分布发生变化而产生吸引，不是凭空制造电荷。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像纸屑内部的正负电分布稍微偏向两边，但不是把纸屑变成小磁铁。静电和磁铁吸铁不是同一种机制；比方不能用来认定一切吸引都是磁力。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "static-03",
      "group_id": "static",
      "category": "physics",
      "topic": "静电",
      "grade_band": "5-6",
      "scenario": "follow_child_question",
      "fact_ids": [
        "static"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "梳子梳头后为什么能吸小纸屑？",
          "assistant": "接触摩擦可导致电荷转移；带电物体能使中性物体的电荷分布发生变化而产生吸引，不是凭空制造电荷。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "今天吸不起来，是静电不存在了吗？",
          "assistant": "不能这样判断。湿度、材料和摩擦方式都会影响，没观察到明显效果不等于这种现象不存在。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "static-04",
      "group_id": "static",
      "category": "physics",
      "topic": "静电",
      "grade_band": "1-2",
      "scenario": "optional_observation",
      "fact_ids": [
        "static"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "梳子梳头后为什么能吸小纸屑？",
          "assistant": "梳子和头发接触摩擦后可能带电，能对附近小纸屑产生电的作用。还可以想想：今天吸不起来，是静电不存在了吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "用塑料梳子轻梳干燥头发后靠近桌上少量大纸片，观察是否移动；远离插座，不用塑料袋套头。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：梳子和头发接触摩擦后可能带电，能对附近小纸屑产生电的作用。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "static-05",
      "group_id": "static",
      "category": "physics",
      "topic": "静电",
      "grade_band": "3-4",
      "scenario": "test_a_guess",
      "fact_ids": [
        "static"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "纸屑被吸住，说明它本来一定带相反的电？",
          "assistant": "不一定。原本整体中性的纸屑也可能因电荷分布改变而被吸引，不能只凭吸引判断原先电性。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "用塑料梳子轻梳干燥头发后靠近桌上少量大纸片，观察是否移动；远离插座，不用塑料袋套头。静电和磁铁吸铁不是同一种机制；比方不能用来认定一切吸引都是磁力。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "static-06",
      "group_id": "static",
      "category": "physics",
      "topic": "静电",
      "grade_band": "5-6",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "static"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "梳子梳头后为什么能吸小纸屑？先用一句话说。",
          "assistant": "梳子和头发接触摩擦后可能带电，能对附近小纸屑产生电的作用。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "接触摩擦可导致电荷转移；带电物体能使中性物体的电荷分布发生变化而产生吸引，不是凭空制造电荷。打个比方：像纸屑内部的正负电分布稍微偏向两边，但不是把纸屑变成小磁铁。静电和磁铁吸铁不是同一种机制；比方不能用来认定一切吸引都是磁力。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "static-07",
      "group_id": "static",
      "category": "physics",
      "topic": "静电",
      "grade_band": "1-2",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "static"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "梳子梳头后为什么能吸小纸屑？能打个比方吗？",
          "assistant": "梳子和头发接触摩擦后可能带电，能对附近小纸屑产生电的作用。像纸屑内部的正负电分布稍微偏向两边，但不是把纸屑变成小磁铁。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "静电和磁铁吸铁不是同一种机制；比方不能用来认定一切吸引都是磁力。所以要记住的科学解释是：接触摩擦可导致电荷转移；带电物体能使中性物体的电荷分布发生变化而产生吸引，不是凭空制造电荷。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "static-08",
      "group_id": "static",
      "category": "physics",
      "topic": "静电",
      "grade_band": "3-4",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "static"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "梳子梳头后为什么能吸小纸屑？",
          "assistant": "梳子和头发接触摩擦后可能带电，能对附近小纸屑产生电的作用。接触摩擦可导致电荷转移；带电物体能使中性物体的电荷分布发生变化而产生吸引，不是凭空制造电荷。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "用塑料梳子轻梳干燥头发后靠近桌上少量大纸片，观察是否移动；远离插座，不用塑料袋套头。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。静电的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "static-09",
      "group_id": "static",
      "category": "physics",
      "topic": "静电",
      "grade_band": "5-6",
      "scenario": "no_quiz",
      "fact_ids": [
        "static"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "梳子梳头后为什么能吸小纸屑？不要考我，也不要反问。",
          "assistant": "接触摩擦可导致电荷转移；带电物体能使中性物体的电荷分布发生变化而产生吸引，不是凭空制造电荷。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：纸屑被吸住，说明它本来一定带相反的电？",
          "assistant": "不一定。原本整体中性的纸屑也可能因电荷分布改变而被吸引，不能只凭吸引判断原先电性。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "static-10",
      "group_id": "static",
      "category": "physics",
      "topic": "静电",
      "grade_band": "1-2",
      "scenario": "end_after_followup",
      "fact_ids": [
        "static"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "梳子梳头后为什么能吸小纸屑？",
          "assistant": "梳子和头发接触摩擦后可能带电，能对附近小纸屑产生电的作用。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "今天吸不起来，是静电不存在了吗？",
          "assistant": "不能这样判断。湿度、材料和摩擦方式都会影响，没观察到明显效果不等于这种现象不存在。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于静电，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    },
    {
      "id": "pixels-01",
      "group_id": "pixels",
      "category": "engineering",
      "topic": "屏幕像素",
      "grade_band": "3-4",
      "scenario": "repair_misconception",
      "fact_ids": [
        "pixels"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "屏幕怎么拼出那么多颜色？",
          "assistant": "许多屏幕把很小的红、绿、蓝发光部分组合起来，亮度不同就能呈现许多颜色。常见RGB显示通过子像素的光强组合进行加色混合；具体结构因显示技术而异，屏幕混光与颜料混合规则不同。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "红绿蓝颜料混起来也一定变白？",
          "assistant": "屏幕是在把不同颜色的光加在一起，颜料主要吸收、反射光，两种混合过程不同，不能直接套同一结果。还可以接着想：像素越多，照片就一定更清楚吗？",
          "behavior": "repair_then_offer_specific_question"
        }
      ]
    },
    {
      "id": "pixels-02",
      "group_id": "pixels",
      "category": "engineering",
      "topic": "屏幕像素",
      "grade_band": "5-6",
      "scenario": "change_explanation",
      "fact_ids": [
        "pixels"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "屏幕怎么拼出那么多颜色？",
          "assistant": "常见RGB显示通过子像素的光强组合进行加色混合；具体结构因显示技术而异，屏幕混光与颜料混合规则不同。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我还是没听懂，能换个看得见的例子吗？",
          "assistant": "像用很多小灯点拼图，不过每个位置还能调节不同颜色光的强弱。像素不是有固定颜色的颜料块，细节取决于屏幕结构，也不要把所有屏幕都看成同一种排列。",
          "behavior": "use_bounded_analogy"
        }
      ]
    },
    {
      "id": "pixels-03",
      "group_id": "pixels",
      "category": "engineering",
      "topic": "屏幕像素",
      "grade_band": "1-2",
      "scenario": "follow_child_question",
      "fact_ids": [
        "pixels"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "屏幕怎么拼出那么多颜色？",
          "assistant": "许多屏幕把很小的红、绿、蓝发光部分组合起来，亮度不同就能呈现许多颜色。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "像素越多，照片就一定更清楚吗？",
          "assistant": "不一定。原图质量、屏幕尺寸、观看距离和处理方式都影响效果，不能只用一个数字判断。",
          "behavior": "answer_specific_followup"
        }
      ]
    },
    {
      "id": "pixels-04",
      "group_id": "pixels",
      "category": "engineering",
      "topic": "屏幕像素",
      "grade_band": "3-4",
      "scenario": "optional_observation",
      "fact_ids": [
        "pixels"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "屏幕怎么拼出那么多颜色？",
          "assistant": "许多屏幕把很小的红、绿、蓝发光部分组合起来，亮度不同就能呈现许多颜色。还可以想想：像素越多，照片就一定更清楚吗？",
          "behavior": "explain_then_invite_exploration"
        },
        {
          "user": "我想先观察一下，再想这个问题。",
          "assistant": "看可靠教材中的放大子像素图片，比较红、绿、蓝区域；不用长时间贴近屏幕或拆开设备。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "今天没有材料，可以先不做吗？",
          "assistant": "可以。先记住这个解释：许多屏幕把很小的红、绿、蓝发光部分组合起来，亮度不同就能呈现许多颜色。观察可以等条件合适再做。",
          "behavior": "respect_constraints"
        }
      ]
    },
    {
      "id": "pixels-05",
      "group_id": "pixels",
      "category": "engineering",
      "topic": "屏幕像素",
      "grade_band": "5-6",
      "scenario": "test_a_guess",
      "fact_ids": [
        "pixels"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "红绿蓝颜料混起来也一定变白？",
          "assistant": "屏幕是在把不同颜色的光加在一起，颜料主要吸收、反射光，两种混合过程不同，不能直接套同一结果。",
          "behavior": "repair_misconception"
        },
        {
          "user": "我不想只背答案，有什么办法帮助我理解？",
          "assistant": "看可靠教材中的放大子像素图片，比较红、绿、蓝区域；不用长时间贴近屏幕或拆开设备。像素不是有固定颜色的颜料块，细节取决于屏幕结构，也不要把所有屏幕都看成同一种排列。",
          "behavior": "connect_evidence_and_limits"
        }
      ]
    },
    {
      "id": "pixels-06",
      "group_id": "pixels",
      "category": "engineering",
      "topic": "屏幕像素",
      "grade_band": "1-2",
      "scenario": "brief_then_deeper",
      "fact_ids": [
        "pixels"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "屏幕怎么拼出那么多颜色？先用一句话说。",
          "assistant": "许多屏幕把很小的红、绿、蓝发光部分组合起来，亮度不同就能呈现许多颜色。",
          "behavior": "brief_answer"
        },
        {
          "user": "这次可以多讲一点原因，我想弄懂。",
          "assistant": "常见RGB显示通过子像素的光强组合进行加色混合；具体结构因显示技术而异，屏幕混光与颜料混合规则不同。打个比方：像用很多小灯点拼图，不过每个位置还能调节不同颜色光的强弱。像素不是有固定颜色的颜料块，细节取决于屏幕结构，也不要把所有屏幕都看成同一种排列。",
          "behavior": "increase_depth_when_requested"
        }
      ]
    },
    {
      "id": "pixels-07",
      "group_id": "pixels",
      "category": "engineering",
      "topic": "屏幕像素",
      "grade_band": "3-4",
      "scenario": "analogy_boundary",
      "fact_ids": [
        "pixels"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "屏幕怎么拼出那么多颜色？能打个比方吗？",
          "assistant": "许多屏幕把很小的红、绿、蓝发光部分组合起来，亮度不同就能呈现许多颜色。像用很多小灯点拼图，不过每个位置还能调节不同颜色光的强弱。",
          "behavior": "concrete_analogy"
        },
        {
          "user": "这个比方每个地方都和真的一样吗？",
          "assistant": "像素不是有固定颜色的颜料块，细节取决于屏幕结构，也不要把所有屏幕都看成同一种排列。所以要记住的科学解释是：常见RGB显示通过子像素的光强组合进行加色混合；具体结构因显示技术而异，屏幕混光与颜料混合规则不同。",
          "behavior": "separate_analogy_from_mechanism"
        }
      ]
    },
    {
      "id": "pixels-08",
      "group_id": "pixels",
      "category": "engineering",
      "topic": "屏幕像素",
      "grade_band": "5-6",
      "scenario": "uncertain_observation",
      "fact_ids": [
        "pixels"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "屏幕怎么拼出那么多颜色？",
          "assistant": "常见RGB显示通过子像素的光强组合进行加色混合；具体结构因显示技术而异，屏幕混光与颜料混合规则不同。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "我想自己查证一下。",
          "assistant": "看可靠教材中的放大子像素图片，比较红、绿、蓝区域；不用长时间贴近屏幕或拆开设备。",
          "behavior": "offer_safe_observation"
        },
        {
          "user": "我观察到的好像不一样，是我弄错了吗？",
          "assistant": "现在还不能判断谁错了。屏幕像素的观察结果不同，常常是条件不一样。你具体看到了什么，当时是怎么做的？",
          "behavior": "ask_for_evidence_without_blame"
        }
      ]
    },
    {
      "id": "pixels-09",
      "group_id": "pixels",
      "category": "engineering",
      "topic": "屏幕像素",
      "grade_band": "1-2",
      "scenario": "no_quiz",
      "fact_ids": [
        "pixels"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "屏幕怎么拼出那么多颜色？不要考我，也不要反问。",
          "assistant": "许多屏幕把很小的红、绿、蓝发光部分组合起来，亮度不同就能呈现许多颜色。",
          "behavior": "respect_no_questions"
        },
        {
          "user": "我试着复述：红绿蓝颜料混起来也一定变白？",
          "assistant": "屏幕是在把不同颜色的光加在一起，颜料主要吸收、反射光，两种混合过程不同，不能直接套同一结果。",
          "behavior": "correct_without_quizzing"
        }
      ]
    },
    {
      "id": "pixels-10",
      "group_id": "pixels",
      "category": "engineering",
      "topic": "屏幕像素",
      "grade_band": "3-4",
      "scenario": "end_after_followup",
      "fact_ids": [
        "pixels"
      ],
      "provenance": {
        "type": "synthetic",
        "author": "Codex",
        "date": "2026-09-29",
        "method": "按主题逐项撰写知识、误解、追问、比喻边界和安全观察，再组合为10种教学对话路径；不是儿童真实对话，部分主题内回答复用。"
      },
      "review": {
        "status": "draft",
        "reviewer": "",
        "reviewer_kind": "",
        "notes": "待逐段核查科学事实、来源支持、适读学段、观察可行性、近重复与上下文衔接；成人审阅不代表已验证儿童探索兴趣。"
      },
      "turns": [
        {
          "user": "屏幕怎么拼出那么多颜色？",
          "assistant": "许多屏幕把很小的红、绿、蓝发光部分组合起来，亮度不同就能呈现许多颜色。常见RGB显示通过子像素的光强组合进行加色混合；具体结构因显示技术而异，屏幕混光与颜料混合规则不同。",
          "behavior": "explain_at_grade"
        },
        {
          "user": "像素越多，照片就一定更清楚吗？",
          "assistant": "不一定。原图质量、屏幕尺寸、观看距离和处理方式都影响效果，不能只用一个数字判断。",
          "behavior": "follow_interest"
        },
        {
          "user": "明白一点了，今天先聊到这里。",
          "assistant": "好，今天就停在这里。关于屏幕像素，你已经留下了一个可以继续观察的线索。",
          "behavior": "respect_stop"
        }
      ]
    }
  ]
}