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

In this activity, learners build a special rolling can that returns back to you when you push it forward. Use this activity to demonstrate the transfer of energy between kinetic and potential energy.

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

In this design challenge, learners build a boat that paddles itself using a rubber band as its power source.

In this design challenge activity, learners build a machine that kicks a Ping-Pong ball into a cup lying on its side 12 inches away.

In this design challenge activity follow up to "Kicking Machine", learners add a hands-free feature to their Kicking Machine.