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    Community Science Workshop Network
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    In this activity, learners build a mini crank-machine to create an animated character or scene. This engineering activity introduces learners to automata, rotational motion, and cranks and cams.

    $5 - $10 per student Ages 6 - 14 30 to 45 minutes
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    Twin Cities Public Television
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    In this engineering activity, learners explore simple machines and then build cardboard automata using cams. Learners are also challenged to build a complex machine--a moving sculpture that tells a...

    $5 - $10 per group Ages 8 - 14 2 to 4 hours