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    Twin Cities Public Television
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    In this engineering activity, learners design and build a mechanical arm to lift a small item. Learners must follow certain design constraints as they build an arm that can lift a paper cup from...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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    Twin Cities Public Television
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    In this mechanical engineering activity, learners design shadow puppets with moving parts and use them to tell stories. Learners explore simple and complex linkages while constructing various...

    $10 - $20 per group Ages 8 - 14 2 to 4 hours