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    COSI
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    In this activity about magnetism (page 15 of the PDF), learners will explore how opposite and similar magnetic poles affect a swinging (pendulum) magnet. Learners will see firsthand how gravity and...

    $5 - $10 per group Ages 6 - 14 10 to 30 minutes
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    Lawrence Hall of Science
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    In this earth science/math/art activity, learners use simple ingredients to grow crystals and examine the repeating geometric shapes and patterns. Learners compare the growth of crystals from four...

    $5 - $10 per group Ages 6 - 14 1 to 4 weeks
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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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    WGBH
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    In this hands-on activity, learners build their own kaleidoscopes and explore how light can reflect of off surfaces such as mirrors, to produce beautiful patterns. By changing different aspects of...

    $1 - $5 per group Ages 6 - 11 30 to 45 minutes
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    Twin Cities Public Television
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    This activity (on page 2 of the PDF) is a full inquiry investigation into how hairs from a crime scene are matched to suspects. Learners each take a single hair from their own head, then put it...

    Over $20 per group Ages 8 - 14 1 to 2 hours
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    Lawrence Hall of Science
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    Learners trace, cut out and fly a boomerang, outdoors or in a large indoor space. Boomerangs are believed to have originated among the Aborigines of Australia, so this activity could be used in...

    1 cent - $1 per student Ages 4 - 14 10 to 30 minutes
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    Lawrence Hall of Science
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    This activity gets learners looking at 6-sided shapes in nature, including the cells of a beehive, as well as other shapes. Learners use the activity's shape chart to keep track of all the...

    1 cent - $1 per group Ages 4 - 14 1 to 7 days