Science and Engineering Practices - 3-5.SEP3.2:
Plan and conduct an investigation collaboratively to produce data to serve as the basis for evidence, using fair tests in which variables are controlled and the number of trials considered.

Disciplinary Core Ideas - S.3-5.ETS.1.3.DCI:
ETS1.B: Developing Possible Solutions •Tests are often designed to identify failure points or difficulties, which suggest the elements of the design that need to be improved. ETS1.C: Optimizing the Design Solution •Different solutions need to be tested in order to determine which of them best solves the problem, given the criteria and the constraints.