Save space and encourage children to explore measurement and weight. Both balances feature an efficient, compact design with equivalency markings that allow children to assign less than, greater than, or equal to symbols to their balance setup and demonstrate mass equivalency. Assemble and disassemble quickly. Clear buckets and pans work well for both liquids and solids. This set is perfect for classroom use. Details: Nestable Bucket Balances design 15'' x 7'' x 10'' Set of 4 Assembles and disassembles quickly Activity Guide included For ages 3 and up