This set of 4 pan balances encourages children to explore measurement and weight by placing math manipulatives, counting bears, or counters in the scales. They learn early math and science concepts such as inequalities, mass, volume, counting, subtraction, and addition while comparing solids and liquids. The balances nest together for compact storage. Size: 43.2 x 22.9 x 17.8 cm. Ages 4 to 5.