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    NASA
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    In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system. Learners can see the parallax effect in action by holding their thumb...

    free Ages 6 - 18 Under 5 minutes
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    Oregon Museum of Science and Industry
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    Learners experiment with a commercial photo-sensitive paper (Sunprint® or NaturePrint® paper). They place opaque and clear objects on the paper and expose it to bright light, observing the results....

    $5 - $10 per group Ages 6 - adult Under 5 minutes

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