4PCS Roller Digital Teaching Stamp, Addition and Subtraction Roller Stamp, Reusable Calculation Math Educational Toy Stamp, Smart Math Roller Stamp for Addition Subtraction Multiplication Division.

【Digital Teaching Stamp Roller】Adjustable numbers, gently rolling, can efficiently and quickly print out math practice questions within 100, it is a fun and meaningful gift for your children and friends’ children!
【Train Logical Thinking】This number teaching seal is able to develop your child’s sense of space and facilitate kids’ number thinking and problem-solving by setting up 10 different ways of queuing.
【Can Be Used Repeatedly】The digital stamp for kids can be inked for reuse. The printing is clear, and the color does not fade after drying, and it is not easy to smudge. The addition and subtraction seal contains the digital teaching seal and 1 bottle of ink.
【Quickly Addition and Subtraction】 You can quickly prepare math problems for your kids at home. You can print quickly by just scrolling through the math problems, and it dries quickly. Primary school students make one page a day to improve the speed and accuracy of oral arithmetic, cute convenient and practical.
【Best Gifts】The roller digital stamp is great for wonderful Christmas birthdays Easter gifts for kids and other occasions. This is a special gift for kids, family, and friends.