Jumbo 12-sided dice are great to reinforce elapsed time skills. Roll both pairs of jumbo 12-sided dice and calculate the elapsed time between the to! The yellow pair is used as AM hours: the yellow dice with blue numbers 1-12 designates hours, and the yellow dice with red numbers :00 - :55 designates minutes. The white pair is used as PM hours: the white dice with blue numbers 1-12 designates hours, and the white dice with red numbers :00 - :55 designates minutes. Each set contains 4 dice.