With these color-coded tiles, students can manipulate parts of a whole to see how those portions relate to each other. Use the tiles to perform simple math operations with decimals. Each set contains 51 plastic tiles in a sturdy plastic storage tray. Includes decimal values of 1.0, 0.50, 0.33, 0.25, 0.166, 0.125, 0.10, 0.083. Activity Guide provides suggestions for use alone or with other Rainbow Fraction® Teaching System products. Tray measures 10"L x 9"H. Grades 3-8.