Bats and birds that look like faces. Skulls that pop up on anything white. Three donkeys with three ears be-tween them. And walls that disappear. Relax, they're only optical illusions. Examine thousand-year-old drawings, find out about closure, perspective, and "the Rubin vase", and how these tools can untangle the tricks found in this volume.
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9 - 12 Years Activities, Crafts & Games Children's Children's Books Games Puzzles & Games Trivia