Age : 6 ~ 9 
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.