MaTris is a nice program for practicing the basic operations of arithmetic.

The calculation method is preselectable.

It includes simple counting exercises, addition with symbols, addition/subtraction with different number ranges, and multiplication/division with defined factors.

One can thus train different learning skills.

A solution button shows the correct result; optional sound effects provide audio feedback.

After solution of a predefined number or time of exercises, the child may play a tetris-like game.

The more exercises solved, the more points will be received in the game part.

Multilingual version: German, English, Swedish, Italian, Spanish, French, Norwegian.