ITEM NAME:Wooden Framed 9-bead 11 Digits Abacus Counting Frame Kids Math Education U7L7 Wooden Framed 9-bead 11 Digits Abacus Counting Frame Kids Math Education U7L7 Encased in a wooden frame, 11 digits with 9 beads sliding on each rod The abacus gives concrete visible display of numbers by beads A very useful tool in general mathematics education Widely used by kids, accounting students, merchants, traders, etc Material: Wooden frame, plastic beads 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 is a integration of mind and body. Abacus is a magical tool to make brain smarter. Description: Size (L x W x H): Approx. 7.8 x 3.8 x 0.8 inch Color: Wooden color (frame), white and green (beads) Package Included: 1 x Abacus Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..The abacus gives concrete visible display of numbers by beads. Calculations made by the Abacus is a integration of mind and body. Abacus is a magical tool to make brain smarter. 1 x Abacus.