和小教授学数学

The Little Professor is a math for kids preschool game.It presents sets of addition, subtraction, multiplication and division problems in five degrees of difficulty.Enter your answer by pushing the number keys. If you're right, the next problem will be presented. If you're wrong, "ERROR" is displayed. You're given two more tries, then the correct answer is displayed. After ten problems, your score - the number of right answers and the time it took to solve, are displayed. A feedback dialog will rate you with 1 to 5 stars. Then another set of ten problems begins with the same operation at the same level.You can change the level and operation at any time 更新内容： 修复了一些BUG。