Twice the dice is twice as nice! Use these double dice to teach probability, predict numerical outcomes and track the statistical results of repeated rolls. These versatile manipulatives can bring a fun game- like element to countless math lessons. Great for centers! Includes sturdy hexagonal tub for quick clean-up and easy storage. From the Manufacturer Twice the Dice is twice as nice. Use these double dice to teach probability, predict numerical outcomes and track the statistical results of repeated rolls. Each brightly colored, translucent outer die holds a single, smaller, white die inside. Twice the dice means twice the math and twice the learning. Set of 72 dice comes in a sturdy hexagonal tub for quick clean-up and easy storage.