The fun way to learn math. Children write their answers to the questions on the two-sided mat in the blanks using dry erase pens and simply press and rub the game mat to check them against the correct response. Self-correcting and reusable. Shipped directly from the manufacturer.--rush shipping not available. Gift wrap not available. Information on how to place your order by fax or by telephone. Product Number: AMSR1908 (Math Magic Set of 4), AMSR1901 (Addition), AMSR19015 (Addition Set of 5), AMSR190110 (Addition Set of 10), AMSR1902 (Subtraction), AMSR19025 (Subtraction Set of 5), AMSR190210 (Subtraction Set of 10), AMSR1900 (Multiplication), AMSR19005 (Multiplication Set of 5), AMSR190010 (Multiplication Set of 10), AMSR1903 (Division), AMSR19035 (Division Set of 5), AMSR190310 (Division Set of 10)