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Stereoscope

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In this activity, learners construct a device that allows them to view 2-D images in 3-D.
Over $20 per student Ages 6 - 11 1 to 2 hours

Topological Puzzles

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In this activity, learners construct three math puzzles out of simple materials like wood, string, and Styrofoam.
$1 - $5 per student Ages 6 - 14 1 to 2 hours