• 【Unique Four Basic Operations & Size Comparison Problems】With MasePocket's exclusive four basic operations, size comparison, and number memorization functions, we simultaneously develop calculation ability and logical thinking ability • 【Enhance auditory memory with the multiplication table reading function】Input the multiplication table not only visually but also aurally Ideal for children who find memorizing multiplication tables difficult • 【Countdown function to boost concentration】Training to solve within a set time improves concentration and calculation speed efficiently • 【Automatic Scoring & Retry Function】Instantly judges correct or incorrect every time you solve a problem You can repeatedly challenge problems you got wrong, allowing for sure and lasting learning • 【Ample problem numbers suitable for elementary school 1st to 4th graders】With a wide range of difficulties in addition, subtraction, multiplication, and division, children who excel in math can enjoy it without getting bored