Abacus tool: allows people to intuitively and practically move beads when counting, adding, subtracting, multiplying, identifying place values, etc. Comfortable feel: the abacus beads are polished and smooth, easy to use. Made of plastic material: not easy to damage, can be used for a long time. Arithmetic abacus: no sharp corners, will not scratch your hands, safer to use. Using an abacus as a math teaching tool can make math practice more effective, is a good way to teach calculation, and makes learning much easier.