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Watercraft
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In this design challenge activity, learners build a boat that can hold 25 pennies (or 15 one inch metal washers) for at least ten seconds before sinking.
Up, Up and Away with Bottles
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In this activity, learners make water rockets to explore Newton's Third Law of Motion. Learners make the rockets out of plastic bottles and use a bicycle pump to pump them with air.

Marshmallow Models
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No glue is needed for learners of any age to become marshmallow architects or engineers.

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