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Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

In this activity learners will build roller coasters and test them using small balls or marbles.

In this activity, learners explore different ways to stack cups to meet a personal goal.

In this activity, learners consider how a simple machine, a lever, turns a small push or pull (a small force) into a larger--or stronger--push or pull (a larger force).