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How Far?
To learn how friction affects motion, learners build a measurement tool from a rubber band and other simple materials.
Springs and Stomachs
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In this demonstration, learners investigate mass, gravity, and acceleration by dropping a wooden bar with a balloon attached to its underside, a mass suspended from it by rubber bands, and a sharp-poi
Balloon Surprise
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In this activity, learners discover a trick to release the air out of a balloon without popping it.