Math Learning Train

The application is designed for kids to learn simple math exercises. It is a course type application and has the incorrect answer exercise repeating strategy, to help kids to memorize the exercises. It will not let the child to pass the exercise until the exercise is memorized.
The application has the option of adding multiple (up to 10) users and keeps the records individually for each user.
The full version contains every single combination of exercises from 1 to 10 of 1st and 2nd operand and some operation with 0 and some above 10.(from 1+1 to 9+10, 10 +10 or 1-1 to 20 - 10 in subtraction case)