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Have you ever wondered why the Oriental Soroban abacus has 4 separate beads? It is in base 10, not 4 or 5, so why organize it that way? In response to yesterday’s post Hand tricks! Alexander Bogomolny linked his…Read more ›

Have you ever wondered why the Oriental Soroban abacus has 4 separate beads? It is in base not 4 or so why organize it that way? In response to yesterday’s post Hand tricks! Alexander Bogomolny linked his…Read more ›

The Japanese Soroban Abacus, Part 1: The Basics

The Japanese Soroban Abacus, Part 1: The Basics

How to Calculate Using Japanese Abacus Part 1

A tutorial series on how to use the Japanese abacus or soroban.

Soroban France - Résultats Yahoo France de la recherche d'images

Soroban France - Résultats Yahoo France de la recherche d'images