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Plan and Conduct Fair Tests; Iterate
Worksheet
Grade Level
Grade 5
5.76 Plan and Conduct Fair Tests; Iterate
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A prototype water wheel turns well but splashes water out of the test tray. Which iteration is most controlled and useful?
A
Ignore the splashing because the wheel turns.
B
Add a small splash guard and retest with the same water flow and wheel design.
C
Remove the wheel and test only the empty tray.
D
Change the wheel size, water flow, and tray shape all at once.
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