Want to do some things that help you to train your brain?
Using this free app to help you, and your kids maybe, to do something fun with brain.

Play this puzzle game to practice your arithmetic cheerfully.
For kids, this game help them to remember their Times Tables.
In the game, you and your kids will be familiar with arithmetic(addition, subtraction, and multiplication.)

There are 3 difficulty for you:  
3x3 : Easy
5x5 : Normal
7x7 : Hard
Try the "3x3" size in the beginning.

When you are familiar with this game, play with "5x5" size, that will provide you with more challenges.
Questions in the game seldom have unique solution.
EX:
11 = 8+3 = 2+6+3 = 9-4+5+1
24 = 3x8 = 6x4 = 2x6x2

Try to pass each challenge and challenge self best.
And you might compete scores with players around the world in game center.