Check out this cool iPhone app from Japanese coder Kako-san. In many parts of Asia, the Abacus is still used today, mainly to teach maths, so Kako-san decided to make an abacus app for the iPhone.

File the Molarity Abacus app under one of the many handy calculator apps that exist to serve you for your at-the-bench needs. The calculator is very simple to use (though even still, the app includes ...

Best Websites and Resources to Learn the Abacus at Home: Learning the Abacus at home is an amazing way to improve the concentration of children of their age. With the availability of online resources, ...