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Learners set up books with rubber bands stretched between the books. When two identical books are stretched apart and released, they move back toward each other an equal distance.

1 cent - $1 per group Ages 11 - 14 30 to 45 minutes
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In this physics activity, learners will investigate the strength of egg shells.

1 cent - $1 per group Ages 6 - 11 10 to 30 minutes
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Learners observe projectile motion by launching wooden balls off of a table top. They set up a rubber-band launcher so that each ball experiences a consistent amount of force.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes
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Learners build a pendulum from a yo-yo, and then design their own experiment to determine what affects the pendulum's period of swing.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes