Flashing Abacus

Web-app for Mental Arithmetic

By Nathan Wong


Color-Coded Version



Flashing abacus is a web application designed to help students improve their mental arithmetic capabilities. Often, computer arithmetic exercises accompany the training many abacus students go through, and Flashing Abacus is a lightweight web-app that allows students to practice virtually anywhere.

To use this web interface, go to the application and click on one of the modules to begin. From there, the user can input specifications of the problem, such as the amount of numbers, the speed, and the number of digits. For more information of how our application is used, refer to our instruction manual and demonstration video.

More Information

If you would like to contribute or learn more about mental arithmetic / abacus and its applications in modern math, feel free to contact the creator.