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Abacus Lesson 1 // Introduction, Proper Technique, & History of the Abacus // Tutorial
Short easy lessons paced for younger viewers that teach addition and subtraction on a traditional abacus or soroban. *PLEASE READ THE DESCRIPTION BELOW FOR A LESSON MAP.* **Download the FREE worksheet that goes with each lesson.** http://thehevproject.blogspot.com/p/free-worksheets.html The abacus uses complementary numbers for calculation. In ...
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