Portfolio B: proposal first
Integrative record B · Design and evidence
Tokens are fictional resource units. Record your proposal before looking at the revised design record.
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.
Supplied design record
Constructed teaching data: these values were invented for this activity, not collected in an experiment.
Design | Tokens | Added mm | Trial 1 final °C | Trial 2 final °C | Trial 3 final °C |
|---|---|---|---|---|---|
R | 4 | 15 | 16 | 16.5 | 16 |
S | 6 | 18 | 15 | 15.5 | 15 |
T | 5 | 16 | 15 | 17.5 | 15 |
1. Check every requirement and compare all trials. Which designs qualify? Choose one with a stated priority; explain the warming using a scientific idea.
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2. Propose one modification and a matched repeated test. Specify a prediction, constraints, recording plan, and evidence that would challenge it.
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