A virtual soroban

Screenshot of the virtual soroban

On this page, you can find a virtual soroban to help you learn and practice the soroban or japanese abacus. You can customize its appearance by changing the variable in the url:

A mental calculation page

Screenshot of the mental calculation page

It's a full screen page that allows you to practice anzan a.k.a mental calculation. Numbers are said out loud by a speech synthesis voice. It lets you focus on the soroban you draw in your mind.

But you can also use this page to practice the soroban, a real one this time, by using higher value for the digit parameter.

It should be mobile friendly.