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| Optical illusion image used in psychological tests (Photo credit: Wikipedia) |
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| Patterns creating optical illusion (Photo credit: Wikipedia) |
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| Optical illusion image used in psychological tests (Photo credit: Wikipedia) |
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| Optical illusion with decorative patterns (Photo credit: Wikipedia) |
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| This is a picture of floor tiles in Basilica of St. John Lateran, which create an optical illusion. The picture was taken by Tino Warinowski (User:Chino) in June 2006 and is hereby released to the public domain. (Photo credit: Wikipedia) |
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| The Ponzo Illusion relies on the fact that parallel lines appear to converge as they approach infinity. (Photo credit: Wikipedia) |
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| The duck-rabbit, made famous by Wittgenstein (Photo credit: Wikipedia) |
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| filedesc Original Image: :Image:Wikidec2005cani.gif Image author: Jeremy Hinton. The author created this image and also devised the visual illusion which it exemplifies. License: Template:PD-release Edit From http://en.wikipedia.org/wiki/Image:Wikidec2005cani.gif, but with text removed. license-header Category:Optical illusions (Photo credit: Wikipedia) |
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| Optical illusion: The two orange circles are the same size. (Photo credit: Wikipedia) |
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| Optical illusion 3 (Photo credit: Wikipedia) |
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| Optical illusion 1 (Photo credit: Wikipedia) |
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| Optical illusion 2 (Photo credit: Wikipedia) |
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| Optical illusion with cubes (Photo credit: Wikipedia) |
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| Optical illusion with staircases (Photo credit: Wikipedia) |
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| An optical illusion. Square A is exactly the same shade of grey as square B. See demonstration. (Photo credit: Wikipedia) |
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| Optical illusion (Photo credit: Wikipedia) |
You might catch yourself saying "Eye didn't know that" (pun intended) when you check out the http://www.eyedidntknowthat.info/for-teachers/resource-center/ to order your free Eye bookmarks for homeschool or classroom students.
I compiled several optical illusions from around the web in honor of the occasion, seen here :)
Plus you can download several cool free lessons and activities (see below to check out what kind and the link.)
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| Optical Illusion (Photo credit: micahb37) |
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| Optical illusion image used in psychological tests (Photo credit: Wikipedia) |
On "Eye Didn't Know That" they offer a variety of materials that you can use with your homeschool or classroom students to make teaching children about healthy eyesight a fun and informative lesson.
Eye Didn't Know That Lesson Plans 
Classroom Activities
(we love the optical illusions :) 
Fact Sheets
Brochure
Eye Fact Fortune Teller 
Coloring Pages
Educational Posters
Also check out interesting facts here: For Teachers | Eye Didn't Know That!:
Did you know that an elephant can see a 100 yards?
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| Optical Illusion (Photo credit: Hiddenpower) |
