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    The Exploratorium
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    In this activity, learners walk the sides and interior angles of various polygons drawn on the playground. As they do so, learners practice rotating clockwise 180° and 360°. Learners discover there...

    1 cent - $1 per group Ages 11 - 18 5 to 10 minutes
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    The University of Texas McDonald Observatory
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    In this experiment, learners construct an equilateral triangle using graph paper, a pencil, protractor and ruler. They also make a "laser triangle" using a laser pointer and front...

    $1 - $5 per group Ages 14 - 18 45 to 60 minutes
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    The Exploratorium
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    In this activity, learners follow simple directions to explore and create platonic solids. Learners count the number of faces, edges, and vertices in the structures they make out of paper and look...

    1 cent - $1 per student Ages 11 - 18 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