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    The Exploratorium
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    This hands-on activity shows you how to build basic architectural shapes out of toothpicks and gumdrops. Learners explore how different shapes are more stable than others, and are introduced to...

    $1 - $5 per student Ages 6 - 11 30 to 45 minutes
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    NOAA
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    In this activity, learners explore how the shapes, sizes, and distances of land masses appear differently on two different models of Earth: an icosahedron and a flat map. First, learners find the...

    1 cent - $1 per group Ages 11 - 18 30 to 45 minutes