Learning Resources Rainbow Fraction Measuring Cups (Set of 9). Rainbow Fraction Measuring Cups are a colourful, visual, 3D way to help young learners connect the concepts of fractions, volume, and capacity. These cups feature a bright colourful base that corresponds with the rest of the Rainbow Fractions teaching system resources, and transparent sides so children can see volume and capacity while learning fractional relationships. Includes storage container with 9 measuring cups (whole, , 1/3, , 1/5, 1/6, 1/8, 1/10, 1/12) and multilingual Activity Guide. Set measures 10cm H x 21cm W x 28cm L when stowed. Ages 3+.