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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 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 activity, learners create painting machines that can paint moving forwards and backwards.

In this design challenge activity, learners build a car that uses a battery-operated motor to "drive" at least ten feet.