Pack 114 Fun Pages - Scientist Activity Badge

Seeing is Believing
By Barb Stephens

A picture is worth a thousand words.
But sometimes our eyes deceive us, and what we see is only what our brain expects to see. Optical illusions are amusing, but they also teach us a lot about how our brain works in conjunction with our eyes to create vision. Are you ready for some fun science? Check out these illusions!

Can you tell which line is longer?
Which circle is larger?
Is the square a "true" square?
Can these blocks be stacked as shown?
Is this woman young or old?
Could either of these bars exist?

Last updated May 30, 2001

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