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In this optics activity, learners discover that when they rotate a special black and white pattern called a Benham's Disk, it produces the illusion of colored rings.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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In this outdoor activity and observation game, learners hunt for a variety of textures, colors, odors and evidence of organisms in the activity site.

$5 - $10 per group Ages 4 - adult 30 to 45 minutes