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Build a catapult that transforms the potential energy of a twisted rubber band into kinetic energy. Experiment with design variations so that you can hit a target with a projectile.

In this activity, learners build a racecar using only a rubber band, spool, straw, and paper clip! This racer is a classic toy that zips across a flat surface.

In this design challenge activity, learners build a rubber band-powered rover that can scramble across the room.

This is an activity about friction as well as kinetic and potential energy.

In this dynamic activity, learners build a catapult that launches projectiles, such as marshmallows.