Rainbow Fraction Measuring Cups are ideal for learning about fractions, fraction relationships, volume, and capacity. They’re a colourful, 3D way for hands-on maths learning. The base of each cup is colour-coded with the Rainbow Fraction Teaching System, and the transparent sides let kids see inside when they fill the cups with water or dry materials such as uncooked rice. The whole, ½, 1/3, ¼, 1/5, 1/6, 1/8/ 1/10 and 1/12 cups stow neatly and securely inside the plastic base when not in use.