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Generate, Compare and Optimize Solutions
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Grade Level
Grade 8
8.124 Generate, Compare and Optimize Solutions
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A team wants to compare four lunch-box cooler designs. Which testing plan gives the least biased evidence?
A
Test each cooler on a different day with different foods.
B
Measure only the cooler that feels coldest by hand.
C
Put equal ice packs and equal starting temperatures in each cooler, place them in the same room, and record temperature every 15 minutes.
D
Let each team decide its own test length.
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