2 * Abacus:1*a + 1*b
Abacus style abacus, plastic frame, 17 digits
A bead above and four beads below
Give concrete visual representation of numbers by beads
A very useful tool in general mathematics education
1. Use for children(olden than 3 years old)
2.Stimulate interest in learning
3.Promote brain development
The abacus, also called a counting frame, is a calculating tool where beads are moved down and be carried out by the feel and look at the beads, complex calculations.
colour:black
Material: Plastic
Size: 17.6*6*1.5cm
Package Contents:
2 * Abacus