Steve Spangler Science: It Pays to Smile

Show us your money maker! Those pearly whites! That beautiful grin!

How often do you look at the face of the president pictured on your paper money? What’s the facial expression of the president? Happy? Sad? Believe it or not, you can make George Washington’s face smile or frown on a dollar bill if you know the secret to this visual foolery.


Science Topics
Optical Illusions
K-6
Kindergarten, 1st Grade, 2nd Grade, 3rd Grade, 4th Grade, 5th Grade, 6th Grade

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