{
  "Classroom copy": "1 October 2026",
  "Disclosure": "Completed records are constructed teaching data. Blank practical forms contain no readings.",
  "Teaching data": {
    "Integrative record A · Explain and limit data": {
      "head": [
        "Paired trial",
        "Sleeve H final °C",
        "Sleeve J final °C"
      ],
      "rows": [
        [
          1,
          32,
          34
        ],
        [
          2,
          31,
          33
        ],
        [
          3,
          32,
          34
        ]
      ],
      "kind": "paired",
      "start C": 38,
      "room C": 20,
      "elapsed min": 12,
      "mass g": 100,
      "conditions": "Fresh matched 100 g covered water samples start at 38°C in 20°C surroundings. 12 min; all cups/lids/exposure/readout match. Covered liquid water; cups/lids, mass, starting temperature, duration, exposure and reading procedure match within and across trials. Surroundings stay at the stated room temperature. No ice, phase change, active heating/cooling, direct sunlight or meaningful evaporative cooling. Each trial uses fresh samples. Accuracy is not supplied.",
      "provenance": "Constructed teaching data: these values were invented for this activity, not collected in an experiment."
    },
    "Integrative record A · New evidence data": {
      "head": [
        "Setup",
        "Water g",
        "Start °C",
        "After 12 min °C"
      ],
      "rows": [
        [
          "H only, 25°C room",
          100,
          38,
          35
        ]
      ],
      "kind": "changed_one",
      "conditions": "New record: only H tested in 25°C surroundings. 100 g starts at 38°C; 12 min; other stated procedures match initial record. Covered liquid water; cups/lids, mass, starting temperature, duration, exposure and reading procedure match within and across trials. Surroundings stay at the stated room temperature. No ice, phase change, active heating/cooling, direct sunlight or meaningful evaporative cooling. Each trial uses fresh samples. Accuracy is not supplied.",
      "provenance": "Constructed teaching data: these values were invented for this activity, not collected in an experiment."
    },
    "Integrative record B · Design and evidence data": {
      "head": [
        "Design",
        "Tokens",
        "Added mm",
        "Trial 1 final °C",
        "Trial 2 final °C",
        "Trial 3 final °C"
      ],
      "rows": [
        [
          "R",
          4,
          15,
          16,
          16.5,
          16
        ],
        [
          "S",
          6,
          18,
          15,
          15.5,
          15
        ],
        [
          "T",
          5,
          16,
          15,
          17.5,
          15
        ]
      ],
      "start C": 12,
      "room C": 24,
      "elapsed min": 15,
      "mass g": 90,
      "criterion max C": 17,
      "token max": 6,
      "thickness max mm": 18,
      "conditions": "90 g, start 12°C, room 24°C, 15 min. Final ≤17°C in EVERY trial; ≤6 tokens; ≤18 mm added thickness. Covered liquid water; cups/lids, mass, starting temperature, duration, exposure and reading procedure match within and across trials. Surroundings stay at the stated room temperature. No ice, phase change, active heating/cooling, direct sunlight or meaningful evaporative cooling. Each trial uses fresh samples. Accuracy is not supplied.",
      "provenance": "Constructed teaching data: these values were invented for this activity, not collected in an experiment.",
      "disclosure": "Constructed teaching data: these values were invented for this activity, not collected in an experiment.",
      "kind": "design_trials",
      "trial ids": [
        "1",
        "2",
        "3"
      ],
      "units": {
        "temperature": "°C",
        "time": "min",
        "mass": "g",
        "thickness": "mm",
        "resources": "fictional tokens, not money or energy"
      }
    },
    "Integrative record B · Revised design record data": {
      "head": [
        "Design",
        "Tokens",
        "Added mm",
        "Trial 1 final °C",
        "Trial 2 final °C",
        "Trial 3 final °C"
      ],
      "rows": [
        [
          "R-tight",
          5,
          15,
          15.5,
          16,
          17.5
        ],
        [
          "S-thin",
          6,
          16,
          15.5,
          16,
          16
        ]
      ],
      "start C": 12,
      "room C": 24,
      "elapsed min": 15,
      "mass g": 90,
      "criterion max C": 17,
      "token max": 6,
      "thickness max mm": 18,
      "conditions": "90 g, start 12°C, room 24°C, 15 min. Final ≤17°C in EVERY trial; ≤6 tokens; ≤18 mm added thickness. Covered liquid water; cups/lids, mass, starting temperature, duration, exposure and reading procedure match within and across trials. Surroundings stay at the stated room temperature. No ice, phase change, active heating/cooling, direct sunlight or meaningful evaporative cooling. Each trial uses fresh samples. Accuracy is not supplied.",
      "provenance": "Constructed teaching data: these values were invented for this activity, not collected in an experiment.",
      "disclosure": "Constructed teaching data: these values were invented for this activity, not collected in an experiment.",
      "kind": "design_trials",
      "trial ids": [
        "1",
        "2",
        "3"
      ],
      "units": {
        "temperature": "°C",
        "time": "min",
        "mass": "g",
        "thickness": "mm",
        "resources": "fictional tokens, not money or energy"
      }
    }
  }
}