Lesson 1b - How to use the Abacus aka Soroban? Reading Numbers on the Abacus.
3:15
Lesson 1 - Abacus Worksheet Help
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Lesson 2 - How to use the Abacus aka Soroban? Simple Addition & Subtraction Questions
5:40
Lesson 3 - Abacus Tutorial (Introduction to Mixed Beads)
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Lesson 1a - How to use the Abacus aka Soroban? Abacus Terminology.
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Reading Numbers on Abacus (Week 1) | What is Abacus | MPGLearning
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Mental Math/Abacus Ep.4 - Adding and subtracting numbers on the Abacus without rules (中文 sub)
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Niveau 1 à 100 Rubik's Cubes !
7:01