It's ok.
Explanations in what do to in each game would be nice otherwise it's a sound concept.
Author Comments
Enhance 8 types of mathematic skill: addition, subtraction, division, multiplication, algebra, sequence, equation and fraction.
Cute kid's game
It's a nice game. It would be nice if you added two features, however.
1) Add a backspace button, since clicking on numbers can occasionally result in the wrong one being clicked and there's no way to change it.
2) Let us type the number instead of having to click. Laptop users thank you. :P
Good game, though.