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

Learners attach an egg to a rubber-band bungee cord and drop the egg.

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

When baseball was in its infancy, the ball had plenty of bounce. Today's baseball may not seem to have bounce to it at all; if you drop a ball on the field it won't bounce back.