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In this activity, learners conduct a simple test to find their blind spot.

Create an illusion where it appears that your hand has a hole in it. You'll see the results from when one eye gets conflicting information.

This is a quick activity/demonstration that introduces learners to the concept of index of refraction. Learners place stirring rods in a jar of water and notice they can see them clearly.

If you had a long tube with a 5 millimeter wide slit, would you see the entire Golden Gate Bridge?

This science activity demonstrates the dominant eye phenomena. What does your brain do when it sees two images that conflict?