Math roller stamp

• Addition + Subtraction stamp(2pc)
•The math stamp set as fun as toys, makes learning fun and exciting, increases children's interest in learning.
• Suitable for students to practice, parent guidance, teacher teaching save time.
• Easy to operate the math questions can appear in front of you by scrolling the stamp, which can be adjusted, and the questions can be changed by gently twisting the button, and the questions will be randomly selected.
• Package includes 2pcs digital teaching stamp rollers, it can guide kids or children to do mathematical calculations quickly through playing this stamps.
• The numbers of digital teaching stamp can be adjusted freely, you just need to gently scroll, it will quickly print out less than 100 math problems
• The calculation stamp has subtraction model numbers can be freely combined and sorted, so it can cultivate kids' calculation ability
• The Teaching stamp is small and lightweight, portable to carry at anywhere, you can add ink for reuse, clear printing, difficult to fade, can be used for long time
• A practical and meaningful gift for your child or your friend's child! It can improve the speed and accuracy of oral and written calculations. Also, kids can make a competition by playing with these educational toys.