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Periscope

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In this activity, learners construct a device that allows them to look over ledges or around corners.
$5 - $10 per student Ages 6 - 11 45 to 60 minutes

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