Notes

Pocket optical illusions Summary: A pocket-sized book full of mind-bending optical illusions, from spinning patterns to colours that change on the paper. Over 80 eye-popping illusions to puzzle over, with space for children to draw or colour their own. Includes answers and information about how each illusion works at the back of the book. With Usborne Quicklinks to specially selected websites with more illusions and information. (Publisher)