Видео с ютуба Learn Abacus For Beginners From Basics

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Abacus Mental Math Demonstration - Strengthen Math Facts, Improve Focus, Concentration & Memory

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Abacus Class - Introduction | Learn basics Abacus | Beginners Abacus Lesson 1

Animated Abacus Level 1

Learn Simple Additions and Subtractions on the Abacus

Abacus tutorial for beginners - Math and Addition- How to start with Abacus easy way |2.5 yr Toddler

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Правила абакуса для начинающих

Abacus Basics for Beginners | Episode 1: Introduction to Abacus | Learn Abacus Series

How To Use An Abacus

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

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Урок 2. Как пользоваться абакусом (или соробаном)? Простые вопросы на сложение и вычитание