This set provides children with early experience in understanding volume and fractional relationships through a variety of activities and manipulatives. They use 4 Rainbow Fraction Measuring Cups, a Nestable Bucket Balance, 20 MathLink Cubes, and 10 double-sided Activity Cards to learn about volume, weight, length, height, capacity, and more. Details: Let's Learn to Measure Design 15'' x 10'' x 6'' For ages 3 and up Contents: 4 Rainbow Fraction Measuring Cups Nestable Bucket Balance 20 MathLink Cubes 10 double-sided Activity Cards