- Perfect Design: Our roller digital teaching stamp can quickly print out a lot of math problems just by rolling it lightly. Not only that, you can also adjust the numbers by yourself to print out more different math problems. Ideal choice for home supplies.

- Ideal Teaching Supplies: The numbers are easily reordered with a roller, it can be adjusted in 10 different ways to line up, and these inks dry quickly without making a mess. Our number teaching chapter is suitable for all addition and subtraction arithmetic from 1-100, very suitable for primary school students to do math practice every day, it will greatly improve the ability oral calculations.

- Ideal Study Tools: It is very suitable for home teaching or classroom teaching, and it will be a classroom prize to encourage children to learn independently, and making the learning process more interesting and simple. At the same time, it can also help parents to free their hands and no longer have to worry about making questions.