Koplow Games Addition dice set is perfect to improve the math fluency of your kids. Fun and effective way to learn basic math. Addition dice features +1 through +6. Measures 16 mm and white in color. Comes in set of 10 for kids to learn basic math and improve their knowledge. Suitable to use for learning centers or group activities. Ideal for age group of 5 - 8 years/grades preschool - 2nd. Warning choking hazard: Small parts, not for children under 3 years. Each individual set contains 10 Dice, Bundle of 4 sets, 40 Dice total.