Materials and Uses: Made of plastic material, it can be used for a long time. Composition of the abacus: One bead on the top and four beads on the bottom, with numbers displayed concretely and visibly. It is a very useful and practical tool in general mathematics. Mental Arithmetic: Abacus is widely used to teach counting and mathematics. People who are proficient in using an abacus will almost automatically be good at mental arithmetic. Scope of Application: A good tool for early math education, suitable for kindergarten or primary school. 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.