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    Science Friday
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    In this activity, learners discuss and investigate how cameras, telescopes, and their own eyes use light in similar ways. By building their own pinhole viewers, learners make observations about the...

    1 cent - $1 per student Ages 11 - 14 45 to 60 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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