Measurement and fractions are two of the hardest concepts for children to learn. These transparent, food-safe measuring cups offer an easy visual representation that helps build math skills. Children will see and experience measuring, comparing volumes and capacity, and learning fractional relationships. Transparent, color-coded cups match the Rainbow Fraction Teaching System and work well with all Rainbow Fraction products including Rainbow Fraction Circles. Details: Rainbow Fraction Measuring Cups Set 11.22'' x 7.87'' x 5.12'' Set of 9 measuring cups Transparent, food-safe Includes activity guild For ages 3 and up