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  1. How to Use an Abacus (with Pictures) - wikiHow

  2. Abacus Lesson 1 // Introduction, Proper Technique, & History ... - YouTube

  3. Abacus Tutorial: 1 Basic function - YouTube

  4. How To Use An Abacus-Full Tutorial - YouTube

  5. Abacus-World's first calculator | Complete guide to Abacus - Cuemath

  6. Mastering Abacus Online for Free: Your Complete Guide for …

  7. Master Finger Abacus Techniques: Calculate Faster with Easy

  8. Free Abacus Tutorial - ABACUS MASTERCLASS - Beginner Level - Udemy

  9. Best Way to Use an Abacus for Basic Math Operations

  10. Learning the Abacus