Abacus Lesson 1 // Introduction, Proper Technique, & History of the Abacus // Tutorial

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Lesson 1: How to Properly Use an Abacus - Counting to 100 | Abacus Classes for Beginners

Lesson 1: How to Properly Use an Abacus - Counting to 20 | For Parents and Teachers

The Fascinating History of the Ancient Chinese Abacus

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History of Abacus | What is Abacus? | Evolution of Abacus | World's First Calculating Device

"Abacus Explained : Origins, Benefits, and Basics"

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