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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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    Community Science Workshop Network
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    In this activity (posted on March 20, 2011), learners follow the steps to construct a stroboscope, a device that exploits the persistence of vision to make moving objects appear slow or stationary....

    $5 - $10 per student Ages 8 - 18 1 to 2 hours
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    Community Science Workshop Network
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    In this activity, learners construct a device that projects images onto a surface, so they can trace landscapes and other sights. The cardboard box camera captures the images using a mirror, holder...

    $10 - $20 per student Ages 8 - 14 1 to 2 hours
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    Community Science Workshop Network
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    In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see. Learners use simple materials to build a Circle Spinner, Thaumatrope, and...

    $1 - $5 per student Ages 6 - 18 30 to 45 minutes
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    Community Science Workshop Network
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    In this activity (posted on March 27, 2011), learners follow the steps to construct a mini zoetrope, a device that produces an illusion of action from a rapid succession of static pictures. First,...

    1 cent - $1 per student Ages 6 - 18 1 to 2 hours
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    Community Science Workshop Network
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    In this activity (posted on March 14, 2011), learners follow the steps to construct a camera projector to explore lenses and refraction. First, learners use relatively simple materials to construct...

    $5 - $10 per group Ages 8 - 18 1 to 2 hours
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    Community Science Workshop Network
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    In this activity, learners construct a device that allows them to view 2-D images in 3-D. These 2-D stereoscopic images are simply pictures of the same thing, taken from two positions some distance...

    Over $20 per student Ages 6 - 11 1 to 2 hours