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In this activity, learners construct their own small catapults using simple materials. Learners follow visual instructions to build their launching device.

$10 - $20 per student Ages 8 - 18 1 to 2 hours
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In this activity, learners sort different natural phenomena into categories (they occur on Earth, on the Moon, or on both), and then model how energy moves during a quake using spring toys.

$10 - $20 per group Ages 6 - 18 5 to 10 minutes