Koplow Games 6 Function Math Operator set Set of 6 20mm dice. Bag contains 3 dice with 6 function math operators and 3 dice with corresponding English words. Children learn more effectively when it is reinforced through play. A fun, hands-on way for students to learn basic math operation. These dice helps keep childrens attention and interest. Perfect for individual play, in small groups or as a classroom. Ideal for grades 3 and up. Warning choking hazard: Small parts, not for children under 3 years. Each individual set contains 6 Dice, Bundle of 6 sets, 36 Dice total.