Mental Math, We All Need It But How To Teach It?
We all remember our teachers asking us to do math calculations in our head but not knowing really how to do it? Teachers offered us various mental tricks and strategies but it always posed the additional question which strategy to chose. Faced with each problem we had to decide on a strategy without any way of knowing
Math More Than Reading Is the Best Predictor of Future Academic Achievement
You might, as I did, find this article surprising if you have a young learner just about to enter kindergarten. According to research conducted by a group of university professors called “School Readiness and Later Achievement“, math skills entering kindergarten are the best predictor of future academic success more so than reading skills, attention skills,
How to Divide on an Abacus with a Two Digit Divisor?
Now that we have learned Basic Division and Division with a Single Digit Divisor, let’s continue this time considering division with a 2 digit divisor. If you are new to abacus math or need a little refresher on addition and subtraction on the soroban, please take a look at some of the earlier lessons like
How to Divide on the Abacus?
We begin learning to perform long division on the abacus with a single digit divisor. Just like in the standard algorithm, we will transform division problems into a series of subtraction facts as we move the divisor through the dividend. In the following example we will know we have completed the division problem when the subtraction
How to do Division with a Single Digit Divisor on the Abacus?
If this is your first time doing division on the abacus please see a more basic example, How to Divide on the Abacus. In this example, we will show how to do basic division with a single digit divisor on the abacus which can be thought of as long division. Division is usually difficult for
How to Multiply on an Abacus?
Since multiplication is repeated addition, any multiplication problem can be solved on an abacus. To perform multiplication on an abacus, students must be able to perform addition on the abacus and memorize the basic single digit multiplication facts through 9×9. With addition and the basic math facts, students can take on any multiplication problem with ease.
How to Multiply on the Abacus with a two digit multiplier?
Let’s generalize what we did with Multiplication with Single Digit Multiplier to a multi-digit multiplier. In this case we will look at a 2 digit by 2 digit multiplication. Again we will transform multiplication problems into a series of additions using our memorized 9×9 multiplication facts as we move both multiplier digits through the multiplicand digits.
How to Multiply on the Abacus with Single Digit Multiplier?
Multiplication on the abacus is simple, fast, and efficient. The pre-requisites for learning how to multiply on the abacus are two fold. First students must know how to add on the abacus since multiplication is a series of additions. If you don’t know addition on the abacus or are new to abacus math please take
How To Add 2 and 3 Digit Numbers on an Abacus?
To add and subtract 2 and 3 digit numbers or even higher multi-digit numbers is the same as if we are working with single digit numbers. We use all the same techniques we learned in our basic skill training. We are now beginning to see the power of abacus math since although the numbers are
Abacus Math Program – Lesson 16 – Reverse Double Rod
In Lesson 11 we looked at the Forward Double Rod movement for addition problems. Now let’s take a look at the Reverse Double Rod movement for subtraction. The double rod movement for subtraction is exactly the same as for addition with the only difference using the 10 pair subtraction rule instead. Again we will repeatedly use the