Koplow Games Positive/negative dice set of 8 molded dice, 3 positive, 3 negative, and two math operators. Practice advanced math calculations using both positive and negative numbers. Dice offers hands on math practice from simple addition to more complicated integer functions. Ideal for ages 8 - 13 and grades 3rd - 8th. Set contains 3 dice +1 to +6 and 3 dice -1 to -6 along with 2 operator dice. Warning choking hazard: Small parts, not for children under 3 years. Each individual set contains 8 Dice, Bundle of 6 sets, 48 Dice total.