Optical Illusions

Bats and birds that look like faces. Skulls that pop up on anythingwhite. Three donkeys with three ears be-tween them. And walls thatdisappear. Relax, theyre only optical illusions. Examinethousand-year-old drawings, find out about closure, perspective,the Rubin vase and how these tools can untangle the tricks found inthis volume. A fascinating, visually arresting title, which willkeep the kids quiet for hours.