ABACUS/ How to use an Abacus/ Abacus for Beginners/Preschoolers
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- เผยแพร่เมื่อ 26 เม.ย. 2018
- If you want to teach your child how to use Abacus, then this video might help you. Abacus is nothing but a calculator, that is used for mental calculations. Its the First session, that is useful for beginners, even for preschoolers. This is the basic of abacus.
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