Second graders learned about Optical Illusion art. We looked at different optical illusions and focused on the artist M.C. Escher. They learned about complementary colors and how when these colors are placed together they make each other pop. They "complement" each other. We looked at a purple smiley face image where you stare at it for 60 seconds and when you look away, you see the complementary color (yellow). The kids LOVED that! So we took the idea of complementary colors and optical illusions and created our own op art!