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To learn how friction affects motion, learners build a measurement tool from a rubber band and other simple materials.

Learners build simple catapults and use them to launch cotton balls.

Learners investigate weight by building a spring scale. They observe and record how it responds to objects with different masses.

Learners construct and launch paper helicopters.

Learners examine collisions between two skateboards carrying different masses. They learn about conservation of momentum in collisions.

Using simple, inexpensive items, learners build and test submarine models.