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Your Blind Spot
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In this activity, learners will explore how their own eyes work by experimenting with their photoreceptors.
Periscope
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In this optics activity, learners build a spy tool to secretly view things over walls or around corners.
Benham's Disk
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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.