{"product_id":"9780688161521","title":"Now You See It, Now You Don't : The Amazing World of Optical Illusions","description":"\u003cstrong\u003eNow You See It, Now You Don't\u003c\/strong\u003e\u003cbr\u003e\u003cb\u003eAuthor(s): Seymour Simon\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThis classic book on optical illusions explores dozens of visual riddles about distance, depth, brightness, contrast, and color. Newly designed and filled with more than eighty illustrations -- plus eight full-color pages of optical illusions -- \u003cem\u003eNow You See It, Now You Don't \u003c\/em\u003e lets youngsters see for themselves why they can't always believe their eyes!\u003cbr\u003e\u003cbr\u003eReview(s):\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eISBN:  9780688161521\u003cbr\u003e\u003cbr\u003e ","brand":"HarperCollins","offers":[{"title":"Hardback","offer_id":41028939120846,"sku":"9780688161521","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0600\/7029\/7806\/products\/9780688161521.jpg?v=1647655719","url":"https:\/\/pickwickbookshop.com\/products\/9780688161521","provider":"Pickwick Bookshop","version":"1.0","type":"link"}