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    WGBH
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    In this optics activity, learners build a spy tool to secretly view things over walls or around corners. Learners discover that the mirrors inside the periscope reflect light to help you see what&...

    $5 - $10 per student Ages 6 - 11 10 to 30 minutes
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    New York Hall of Science
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    Design and create an optical illusion toy that makes two pictures appear to become one. This is called a thaumatrope and will allow the learner to investigate the phenomenon of persistence of...

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes
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    Community Science Workshop Network
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    In this activity, learners build inexpensive kaleidoscopes using transparency paper and foil (instead of mirrors). Use this activity to introduce learners to concepts related to optics, light,...

    $1 - $5 per student Ages 8 - 14 10 to 30 minutes
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    WGBH
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    In this optics activity, learners build an animation tool to make mini movies. When you spin a phenakistascope, the pictures move so quickly that your eyes and brain can't separate the images....

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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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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    The Exploratorium
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    In this activity, learners make a stroboscope--a spinning disk with slits around the edge that you look through. Brief but frequent glimpses of images seen through the slits lead to a surprising...

    1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners create a simple “top” from a CD, marble and bottle cap, and use it as a spinning platform for a variety of illusion-generating patterns. Learners will use Benham's...

    $1 - $5 per student Ages 8 - 18 10 to 30 minutes
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    University of Washington
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    In this activity, learners make a Benham Top to explore visual illusions and optics. This activity guide includes three different instructions for making the spinner using various recycled...

    $1 - $5 per student Ages 8 - 18 30 to 45 minutes
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    University of Washington
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    In this activity, learners investigate visual perception as well as plan and conduct their own experiments. In "CLASS EXPERIMENT," learners discover how depth perception works by testing...

    1 cent - $1 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

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