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

In this design challenge activity, learners build a tower that’s at least 12 inches high with two or more parts that move (spin, sway, or flap) in the wind.

In this activity, learners make mobiles to explore the concepts of balance, counterbalance, weight, and counterweight.

Cardboard Automata are a playful way to explore simple machine elements while creating a mechanical sculpture.