A terrific way to teach about elapsed time. Package contains two sets of 12-sided dice, in white and yellow. Both sets have one die that includes numbers 1-12 in blue, to represent hours, and another die that has 5-minute increments, from :00 to :55, in red. Use the yellow dice to symbolize AM, and the white dice to symbolize PM. Roll all four dice and calculate the difference between the two times that are shown.