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Benham's Disk

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In this activity, learners make a Benham Top to explore visual illusions and optics.
$1 - $5 per student Ages 8 - 18 30 to 45 minutes

Size It Up

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In this artistic activity, learners blow up a smaller picture into a larger one, by using a grid.
1 cent - $1 per group Ages 6 - 11 30 to 45 minutes