{"product_id":"optical-illusion-play-pack-9781402733383b","title":"Optical Illusion Play Pack","description":"These optical illusions have more magic than any others! That’s because this fun and visually enticing pack gives kids something special: The opportunity to play with the images, not just look at them. It’s 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. Gardner's numerous puzzle collections, as well as his expert writing on math 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 they’re right by laying a \"checkered tablecloth\" over them both. Or they can pin a colorful rainbow disk to the page, spin it, and watch the colors \"disappear.\" Each illusion gets an entire spread, with instructions, extra illustrations, and sometimes sidebars, too. \n\n","brand":"Sterling","offers":[{"title":"Bargain","offer_id":42824016461904,"sku":"9781402733383B","price":6.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/8173\/5760\/files\/9781402733383-l.jpg?v=1785894867","url":"https:\/\/bookoutlet.com\/fr\/products\/optical-illusion-play-pack-9781402733383b","provider":"Book Outlet","version":"1.0","type":"link"}