{"product_id":"double-value-vertical-flash-cards-addition-subtraction-set-set-of-81","title":"Double-Value Vertical Flash Cards - Addition \u0026 Subtraction Set - Set of 81","description":"Notched corners for quick organization. Large, easy to handle 6-1\/4\" x 3-1\/4\" cards. Bold, heavy type to use with large groups. Durable, thick card stock (14 pt.). Self-checking. Great for small groups, pairs, and whole class participation. Great for teaching the relationship between +\/-, (e.g.: 3+1=4 on one side, 4-1=3 on the reverse).\u003cbr\u003e\u003cbr\u003eKey Features : \u003cbr\u003e\u003cbr\u003ei : Great for teaching the relationship of +\/- and multiply\/divide; (Example 3+1=4 on one side, 4-1+3 on the reverse)\u003cbr\u003eii : Each box contains 90 classroom-size flash cards\u003cbr\u003eiii : 6.25\" x 3.25\"\u003cbr\u003eiv : To familiarize children with the basic facts of addition and subtraction. Quick recall of math basics, \"mental math\". Application and interpretation of mathematical language for important elementary concepts. Auditory\/visual association.\u003cbr\u003e","brand":"Learning Advantage®","offers":[{"title":"Default Title","offer_id":44315740438581,"sku":"ERSCTU8662","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0661\/5180\/9077\/files\/ERSCTU8662.jpg?v=1738825149","url":"https:\/\/esschoolsupply.com\/products\/double-value-vertical-flash-cards-addition-subtraction-set-set-of-81","provider":"ES School Supply","version":"1.0","type":"link"}