Math Roller Stamps: 4 pieces of smart stamps, addition + subtraction + multiplication + division.
Teaching stamp: The digital mathematics stamp roller is small and exquisite, and can be carried around and placed in the pencil case. Improve Math Skills and Improve Concentration.
Convenient and fast: By scrolling the stamp, there will be math problems, which can be randomly selected.
Recycling: Contains refills of ink, when the ink is used up, open the oil cap, drop 5-8 drops of ink, and continue to use it after the ink is completely absorbed.
Rich in content: Addition, subtraction, multiplication and division of numbers within 1-100, four mathematical operation methods, to cultivate children's computing ability and learning fun, suitable for student practice, teacher teaching, parent guidance.
