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In this activity, learners build an electric two-paddle boat using paint paddles, plastic knives, and empty water bottles.

In this invention challenge activity, learners create an indoor game for one or two people that gets you moving.

In this activity, learners explore how pneumatics and hydraulics could be used to produce movement in a robotic arm.

In this activity, learners build a speedboat using paint paddles, a propeller, and film canister. Learners attach a simple circuit and motor to the boat to power the propellers.

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.