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    PBS
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    In this math lesson, learners identify, describe, and construct the five regular polyhedra. Learners are introduced to the idea of three-dimensional figures by first reviewing polygons and regular...

    $1 - $5 per group Ages 11 - 14 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners work together to make polygons (many-sided shapes) with string. Learners sit on the floor and hold onto a piece of string slid between their thumbs and index fingers....

    1 cent - $1 per group Ages 4 - 8 30 to 45 minutes
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    Community Science Workshop Network
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    In this activity, learners create 3D geometric shapes using straws and pipe cleaners. Learners will discover that only certain combinations of two-dimensional shapes make polyhedrons, or regular...

    $1 - $5 per student Ages 8 - 18 1 to 2 hours
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    NCTM Illuminations
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    In this math game, learners play a one-pile game between two players. In this game, the maximum number of tokens that can be removed on each turn remains constant throughout the game. Learners...

    1 cent - $1 per group Ages 14 - 18 1 to 2 hours