Parents can install this educational math game for their kindergarten kids and first grade students. There are 39 levels in total. 1-10 levels are to teach kids addition. At the 10-20 levels, kids subtract the numbers. From the 21st to the 30th level, there are subtractions and additions to find the subtrahend or the addend. After the 30th level, kids will compare and find the larger or smaller numbers. If parents can help the kid, this educational game can be used for preschool education, too. We've prepared it especially for the first grade students. They can develop their mathematical ability by practicing on this math game. Features: - Mathematical operations for the 1st grade students - Educational game for preschoolers, kindergarten kids and primary school kids - 39 levels in total - Addition, subtraction, and smaller & bigger numbers - Exercises to find the subtrahend or the addend - Cute images and amusing sounds for kids