Children learn the dynamics of multiplication and division through visual aid. These double-value flash cards in vertical format consist of 81 cards printed two sides, one side printed with a multiplication problem and the other side with a directly related division problem (e.g. 3x1=3 on one side, 3÷3=1 on the reverse). For every multiplication fact, there are three other facts that belong to the same family. Suggested activities included.
