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    Oregon Museum of Science and Industry
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    In this activity (on page 2 of PDF), learners create a low-tech refrigerator that requires no electricity to keep food from spoiling. It uses only clay pots, one smaller than the other and...

    $1 - $5 per student Ages 8 - 18 1 to 2 hours
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    NOAA
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    In this activity, learners perform an experiment to learn about how different types of marine debris degrade and how weather and sunlight affect the rate of degradation. Learners discover that...

    $1 - $5 per group Ages 8 - 14 1 to 12 months
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    Community Science Workshop Network
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    In this activity, learners construct speedy vehicles made out of paper plates and powered by twisted rubber bands. This toy is an excellent demonstration of potential and kinetic energy and how...

    $1 - $5 per student Ages 6 - 18 45 to 60 minutes
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    The Exploratorium
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    An ordinary camera has a lens that makes an image on film. In a pinhole camera, a small hole replaces the lens. This activity provides instructions for recycling a potato chip can to make your own...

    $1 - $5 per student Ages 6 - 18 10 to 30 minutes
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    New York Hall of Science
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    Make impact craters with marbles (or rocks or washers) in a container of flour. Find out what you can learn about your "comets" by the craters they make.

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes
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    Lawrence Hall of Science
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    In this outdoor, nighttime activity, learners gather around a brightly lit, white surface and study the behavior of nocturnal animals attracted to the light, particularly night fliers. Learners...

    $1 - $5 per group Ages 4 - 14 45 to 60 minutes
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    Science Museum of Minnesota
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    Learn about friction and kinetic energy with this cool spinning toy. The designer of this activity, an artist named Vollis Simpson, made his whirligig from old beer cans, but we can make ours out...

    $1 - $5 per student Ages 6 - 11 45 to 60 minutes