Abacus Tutorial: 1 Basic function

Description: This film shows the basic functions of the classic Chinese abacus (5+2). Train your skills with the Mental Abacus app for Android (link below) or visit www.abakusen.se for more information.

https://play.google.com/store/apps/details?id=com.lindbla.education.abacus

Видео Abacus Tutorial: 1 Basic function канала Pelle Lindblå