Koplow Games Math Dice Set is a fun, hands-on way for students to learn basic math skills. Children learn more effectively when it is reinforced through play. Perfect for individual play, in small groups, or as a classroom, these dice make a great educational resource. Each set includes 8 dice: 3 each of 1-6 dice, 3 each of 7-12 dice and 2 math operator dice.Details:5/8" (16mm) cubes6 packs (8 dice per pack, 48 dice total)Practice basic math operationsRounded corners for safetyFor ages 8 and up