"Constructed teaching data: these values were invented for this activity, not collected in an experiment." Dataset ID, Conditions,"80 g, start 11°C, room 23°C, 16 min. Final ≤16.5°C in EVERY trial; ≤5 tokens; ≤19 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." Units,"{""temperature"": ""°C"", ""time"": ""min"", ""mass"": ""g"", ""thickness"": ""mm"", ""resources"": ""fictional tokens, not money or energy""}" Design,Tokens,Added mm,Trial 1 final °C,Trial 2 final °C,Trial 3 final °C J,3,14,16,16,16.5 K,5,19,15,15.5,15 L,4,16,15,17,15 N,6,18,14,14.5,14