Abacus Math Program – Lesson 3 – Simple Addition and Subtraction
In abacus math lesson 3 we are ready to look at combining numbers by adding and subtracting numbers within a single rod on the abacus or soroban. If you are not sure about how to enter or remove any of the digits 1 through 9 on the abacus, please take a look at abacus math lesson 1 for counting
Abacus Math Program – Lesson 2 – Counting 6 to 9
Now that we know how to enter and remove the numbers from 1 to 5 on the abacus, we will continue with the remaining numbers 6 to 9. From this point we will be able to represent all 10 digits, 0 through 9, on a single rod of the abacus or soroban. As a reminder, in
Abacus Basic Use and Introduction to Counting
This video is an introduction to soroban construction and some of its basic use. Here we have a 17 rod soroban. I can represent a base-10 number up to 17 digits. The soroban is constructed with 17 vertical rods each rod containing 5 beads. The beads are separated by a counting bar call the reckoning
Abacus Math Program – Lesson 1 – Counting 1 to 5
Learning to use the abacus or soroban is learning to transform every arithmetic problem to a single digit operation similar to the four standard math algorithms taught in elementary school. By reducing problem complexity to just single digit operations, abacus users quickly gain both speed and accuracy. The RightLobeMath online abacus math program starts by teaching students 6 simple