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Interactive
Ck 12: Plix: Optical Illusion: Vision and the Eye Interactive
CK-12 Foundation

Ck 12: Plix: Optical Illusion: Vision and the Eye

For Students 9th - 10th
[Free Registration/Login Required] Interactive explores the concept of optical illusion.
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Interactive
Ck 12: Plix: Vision and the Eye: The Line Up Interactive
CK-12 Foundation

Ck 12: Plix: Vision and the Eye: The Line Up

For Students 7th - 9th
[Free Registration/Login Required] Are your eyes playing tricks on you? This site contains parallel and skew lines that creates an optical illusion.
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