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Grade 4
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Variables, Controls and Fair Tests
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Grade 4
4.66 Variables, Controls and Fair Tests
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A class asks, “How does soil moisture affect days to sprout in a seed-sprouting investigation?” Which setup best matches the question?
A
Change soil moisture and the seed type and temperature at the same time
B
Change soil moisture, keep the seed type and temperature the same, and record days to sprout
C
Keep soil moisture the same and change only the notebook page
D
Record days to sprout without noting which soil moisture was used
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