{"product_id":"2940012966650","title":"This Is Four","description":"Kids put down that calculator and hold up your hands!  With just your hands and your mind you can multiply numbers less than 10 together.  This is a quick book on how to multiply any number less than 10 but greater than 0 on your hands.   It is one of many ways you can play with numbers.\u003cbr\u003e\u003cbr\u003eIn this book, you will learn how to multiply numbers less than 10 by 9 easily on your hands!   Then the book moves on to  expand upon the method for greater finger math dexterity besides being neat way to multiply to cover all numbers between 0 and 10.\u003cbr\u003e\u003cbr\u003e While you learn how to do hand multiplication, you will also be learning about bases.  Like what bases we typically use: Base 10.\u003cbr\u003e\u003cbr\u003ePlus there is a bonus math card game at the end.  Enjoy!","brand":"Boettcher","offers":[{"title":"Default Title","offer_id":47147392762096,"sku":"2940012966650","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940012966650_p0.jpg?v=1763574961","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940012966650","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}