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Blind Spot
Source Institutions
In this activity, learners conduct a simple test to find their blind spot.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-612.gif?itok=7y0IEX0t)
Afterimage
Source Institutions
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
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-324.png?itok=qn2n7CSP)
Magic Disc
Source Institutions
In this activity, learners create an optical illusion by spinning two attached cups. A round ball seems to magically appear when the cups spin.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-302.png?itok=t0WLcOKH)
Arrows
Source Institutions
In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners.