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In this activity, learners will explore how and why weight distribution works.

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 will engineer their own weather vane. This activity includes step-by-step instructions with pictures and a "What's Happening?" section explaining how the activity worked.

In this activity, learners design and build a Zoom-a-rang using everyday materials. Experiment with different materials and Zoom-a-rang designs to see how they fly.

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).

In this activity, learners design and build their own parachute using household materials with the goal of landing their passenger safely on a target.