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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 explore motion, energy, and electricity by constructing bottle cars that run on motors.

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

In this activity, learners build styrofoam boats powered by twisted rubber bands.