The Student Math Balance helps kids visualize and manipulate number relationships. Teach and demonstrate addition, subtraction, multiplication, division and basic algebraic equations with this student-sized balance. This self-checking, plastic balance displays number relationships of equal to (=), greater than (>), less than ( Students will easily grasp various number concepts because they can see the results! They will love to take math into their own hands and work towards solutions to math equations. The Student Math Balance includes: – Balance: 14″L x 5″H – 20 weights