This excellent application will help your children to perform many examples of sums using the abacus to respond, this application also to teach them how to use the abacus, taught to add in a more didactic and more quickly, if your child is of which are difficult mathematical problems such here's your solution.

This application has the following features:
It has an abacus with different colors to differentiate their units, tens, hundreds and even thousands.
Select levels from beginners, intermediate and advanced for your child to solve problems between different predesigned examples.
Customize a test for your child solve the problems that you yourself have predefined.

View the final grades for your child to see which part is failing.