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    Community Science Workshop Network
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    In this activity (posted on April 18, 2011), learners follow the steps to construct a zoetrope, a device that produces an illusion of action from a rapid succession of static pictures, using a 16...

    Over $20 per group Ages 8 - 18 1 to 2 hours
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    IEEE
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    In this activity, learners explore the concept of how brakes can stop or slow mechanical motion. Learners examine the operation of a bicycle brake and use low cost materials to devise a simple...

    $5 - $10 per group Ages 8 - 11 45 to 60 minutes
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    WGBH
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    In this physics activity, challenge learners to lift a book with just air using a plastic bag and a straw. This activity demonstrates compressed air and forces.

    1 cent - $1 per student Ages 6 - 11 Under 5 minutes
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    Twin Cities Public Television
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    In this engineering activity, learners examine bicycle mechanics and gear ratios. Learners determine which gears will help them bike a set course in the shortest amount of time.

    1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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    COSI
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    In this activity, learners design a bicycle helmet. Participants will explore the design of bicycle helmets to gain an appreciation for the role that helmet layers play protecting the head. They...

    Over $20 per group Ages 11 - 18 45 to 60 minutes