Abacus soroban en multicouleur 15 colonnes

Abacus soroban : Materiel didactique pour le calcul mental. 15 colonnes. 3 tiges de chaque couleurNatural materials: 

ABS

One bead above and 

four beads below,great tool for Kids to learn counting and calculations. 

A very 

useful tool in general mathematics education,practice counting, math, and 

fine motor skills with one activity 

Help children grasp 

early math concepts through both visual and hands-on learning using this 

durable abacus