Calculation tool: In addition to being a professional tool, the abacus is also a folk tool. Suitable for arithmetic: The abacus is a calculation tool that was used for centuries before the adoption of modern written numbers. Enduring reliability: The abacus/abacus is a classic form of calculator, using a system used before written numbers. Classically made set: The reset button, made of plastic, can be used in remote learning or at home. 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.