Optical Illusion Play Pack
This fun and visually enticing pack gives kids something special: the opportunity to play with the images, not just look at them. Its created by the much-respected and prolific author Martin Gardner, who wrote the Mathematical Games column in Scientific American for more than a quarter of a century. Gardners numerous puzzle collections, as well as his expert writing on maths and science, have made him a force to be reckoned with in the field. Packaged right inside the book are lots of punch-out cards that will enhance every illusion plus a vinyl pouch for safely storing the cards afterwards. So when children try to figure out if the two differently shaped tables in a picture are actually the same size, they can see whether theyre right by laying a checkered tablecloth over them both. Or they can pin a colourful rainbow disk to the page, spin it, and watch the colours disappear. Each illusion gets an entire spread, with instructions, extra illustrations and sometimes sidebars, too.
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