Teach mathematical concepts by letting children build simple, graphic mathematical models that clearly demonstrate fraction relationships. Cubes can be used alone or with Fraction Tower® Activity sets. • Color-coded cubes help kids learn math concepts. • Help children explore and compare fractions by building simple, graphic mathematical models. • Interlocking cubes can be used alone or with Fraction Tower® Activity Sets. • Includes Activity Guide. Teach mathematical concepts by letting children build simple, graphic mathematical models that clearly demonstrate fraction relationships. Cubes can be used alone or with Fraction Tower® Activity sets. Subject Area: Mathematics; Specific Subject: Decimals, Fractions & Percentages; Age Recommendation: Ages 6 and Up; Grades: Grades 1 to 4.