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In this engineering activity, learners explore simple machines and then build cardboard automata using cams.

In this activity, learners are challenged, using everyday objects, to create simple machines to complete specific tasks.

In this activity, learners build their own sound machines and explore the interplay of motion and sound.

In this physics activity, learners build a toy with a figure that spins around like a gymnast on the high bar.

In this activity, learners build mini-basketball courts using cardboard and measuring spoons. Use this activity to introduce learners to catapults, forces, and levers.

In this activity, learners create a working model of a nail clipper. This activity helps learners learn the basic principles of simple machines, engineering design and model building.

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

In this engineering activity, learners design and build a mechanical arm to lift a small item.

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.