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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 activity, learners demonstrate and discuss simple circuits as well as the differences between parallel and serial circuit design and functions.

$10 - $20 per group Ages 8 - 14 45 to 60 minutes