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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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    American Chemical Society
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    In this activity on page 4 of the PDF, learners make some special effects, including snow and breaking glass, with supplies found in the home. In the first activity, learners make and observe four...

    $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 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 (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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