Twice the Dice - 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.   WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs.