yongsheng Anti-Skid Educational Mathematical 17 Digit Rod Wooden Abacus Chinese Counting Tool，Vintage Style Wooden Abacus Professional Abacus for Adults Kids

17 professional soroban style abacus digits with wooden frame and reset button.

Non-slip rubber feet at the base of the abacus that prevents your abacus from sliding.

Promotes imagination and creativity among children

The abacus was a calculator invented sometime between 1000 BC and 500 BC, often constructed as a wooden frame with beads sliding on wires. It was used centuries before the adoption of the Hindu-Arabic written number system and is still widely used by merchants and employees in China, Japan, Africa, and elsewhere. The abacus is also widely used in teaching counting and mathematics. This standard set is perfect for practical use and teaching children.

• Anti-Skid Educational Mathematical 17 Digit Rod Wooden Abacus Chinese Counting Tool，Vintage Style Wooden Abacus Professional Abacus for Adults Kids