{"product_id":"the-trachtenberg-speed-system-of-basic-mathematics-9780313232008","title":"The Trachtenberg Speed System of Basic Mathematics","description":"\u003cp\u003eThe complete system of the Trachtenberg method of mathematics which makes possible high-speed arithmetical calculations with a remarkable degree of accuracy. \u003c\/p\u003e\u003cp\u003e\u003c\/p\u003eThis method is not only speedy but simple. Once one has mastered the rules, lightning calculation is as easy as reading a story. It looks like magic, but the rules are based on sound logic.\u003cbr\u003e","brand":"Praeger","offers":[{"title":"Default Title","offer_id":50872538071314,"sku":"9780313232008","price":120.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/4771\/8930\/files\/img_c1270b64-ab05-4d7e-b0f0-c3c1d9815aaf.jpg?v=1737901117","url":"https:\/\/surprise-castle.myshopify.com\/products\/the-trachtenberg-speed-system-of-basic-mathematics-9780313232008","provider":"Surprise Castle","version":"1.0","type":"link"}