How to Calculate Using Japanese Abacus Part 2

October last year, I have introduced how to represent numbers using the Japanese abacus. In this post, I am going to teach you how to add and subtract using it. If you are not familiar on how to represent numbers in abacus, please read the first part of this series by clicking the link above. You have to understand the representation in order to follow the tutorial below.

Note that although abacus is not needed in the calculations below since it can be done mentally, calculations done in abacus in real life involve large numbers or even those with decimals. The examples below will only give you an overview of how calculations are made and some of the strategies used.  » Read more

Revisiting Khan Academy After Four Years

It was four years ago when I discovered Khan Academy, which as far as I can remember a Youtube channel with more than a thousand videos. If I am not mistaken, it was only then managed by Salman Khan, it’s founder.

A year ago or two, when I searched the internet, I learned that Khan Academy has already its own website and it is run already by a group of educators. Three weeks ago, I started using the website. As of this writing, I have already watched 29 videos (oh yes, I watched them from start to end) and earned 56,340 points. 🙂  » Read more

Practice Solving Equations with Equate Board Game

If you want your children or students practice equations and operations, you might want to try Equate: The Equation Thinking Game. Equate is a math board game that works like Scrabble. In Equate, instead of forming words, you can form equations. Younger children can choose an easy game which only consists of addition and subtraction, while older children can include multiplication and subtraction. Even more challenging is to include fractions!

Just like Scrabble, you can have double or triple scores in Equate. This can make players think of equations that yields a larger answers, while practicing their arithmetic.

Equate can be played 2-4 players ages 8 years old and above.

Although this game is challenging, it could also take a while to finish one game. Games which include fraction is expected to last up to 120 minutes.

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