Balance mathematics is a teaching tool that uses the principle of balance to understand the concept of equations. It consists of a graduated lever, a base, and digital weights of different weights. The weight of the weights corresponds to the numbers, and when the lever is balanced, the weights on both sides are equal. Students hang the weights on both sides of the equation on the corresponding hooks, and the balance is horizontal to verify the validity of the equation. They visually demonstrate the principles of addition, subtraction, multiplication, division, and balance of linear equations. Adapting to the algebraic enlightenment of primary school grades, transforming abstract equality properties into operable equilibrium experiments.