Roller Digital Teaching Stamp Are you looking for ways to make your child love learning more? Our teaching stamp will stimulate children's interest in mathematics. Just gently scroll to efficiently and quickly print out different math problems. Save Your Time Prepare math problems quickly for your kids at home. You can print rapidly by scrolling through the math problems, and the ink dries quickly. Primary school students can complete one page daily to improve the speed and accuracy of mental arithmetic. Adjustable Design Rotate and adjust the column type to choose from 10 different problem formats. Change calculation questions with just a turn of a button, helping strengthen your child's mathematical ability through continuous practice. Reusable Teaching Stamp Small and compact, easy to carry, and designed for reuse with refillable ink. The imprint is clear, dries quickly, and does not fade after printing. This math stamp set includes 4 styles (Addition, Subtraction, Multiplication, Division) and 4 bottles of ink. Learning and Education Gift It is fun for kids to roll the stamp and then fill in the answers. Children, teachers, and parents can use it for educational training. This digital teaching stamp makes a fun and meaningful gift for children. When shopping, please pay attention to the size and dimensions of the product to ensure it meets your needs. Detailed information about the product, including features and specifications, is provided in the title and description. We want you to be completely satisfied with your purchase. If you have any questions or concerns, please . We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it.