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Learners use shop tools and various materials to construct a magnetic spinner and a compass.

$1 - $5 per student Ages 8 - 14 1 to 2 hours
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In this activity, learners build inexpensive pulley assemblies from pulley wheels used for sliding screen door replacement or from clothesline spreaders.

$10 - $20 per group Ages 11 - 18 1 to 2 hours
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In this fun and, at times, hilarious force and motion activity, learners will use household objects to build a crazy contraption and see how far they can get a tennis ball to move.

$1 - $5 per group Ages 4 - adult 1 to 2 hours