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Which one of your eyes are dominant? Do they act independently or are they equally "in control?" This activity explores how your eyes work (or don't work) together.

In this activity, learners create an optical illusion by spinning two attached cups. A round ball seems to magically appear when the cups spin.

In this easy demonstration (3rd on the page), learners explore depth perception by conducting a test with two pencils.

In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners.

In this quick activity/demonstration (5th on the page), learners explore depth perception.