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Blind Spot
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In this activity, learners conduct a simple test to find their blind spot.
X-Ray Vision?
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In this activity (13th on the page), learners complete a simple illusion trick to see through their own hand.
Afterimage
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In this activity about vision and optical illusions, learners conduct a simple test to demonstrate how our eyes create "afterimages." Learners stare at a black cardboard bat for at least 30 seconds an