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For Your Eyes Only
Learners build particulate matter collectors--devices that collect samples of visible particulates present in polluted air.

Sky Floater Challenge
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In this design challenge activity, learners make a balloon hover at eye level for five seconds, and then make it move by creating air currents.

Hovercraft
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In this activity, learners build a hovercraft using a paper plate, cup, and simple motor.

Airboat
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In this activity related to Newton's Laws of Motion, learners build a boat powered by a propeller in the air.