17 Digit Rods Standard Abacus Soroban Chinese Japanese Calculator Counting Tool Compatible for Kids and Adults

The abacus is a calculating tool that was used for centuries before the adoption of the written modern numeral The abacus is still widely used by merchants, traders and clerks in certain parts of the world such as Asia and Africa In addition to being a professional tool, the soroban or abacus is also educational tool The abacus is widely used in teaching children counting and mathematics This abacus has a frame. Its classical, standard design allows for its ease of use as a professional and educational tool