UZZO 17 Digits Portable Plastic Abacus Arithmetic Soroban,Office Useful 17 Column Abacus Soroban Calculating Tool

الوصف

The abacus, also called a counting frame, is a calculating tool where beads are moved up and down and by feeling and looking at the beads, complex calculations are made. Calculations made by the abacus / soroban is a integration of mind and body. Abacus / soroban is a magical tool to make brain smarter. Specification: Size: Approx. 10.5 x 2.3 x 0.7 inch (L x W x H) Material: Plastic frame and beads, wooden rods Color: Black frame, coffee beads Package Content: 1x Plastic Abacus Arithmetic Soroban Kid's Calculating Tool