threetrees Smart Math Roller Stamps Self-inking Free Ink Provided Addition Subtraction Multiplication Division Within 100 Learning Tool for Kids Preschool Kindergarten Home Teacher Supplies

Brand :threetrees Material: Polyvinyl ChlorideShape:SquareSize:48X44X30cm Color :Pink and Blue Models :Addition Subtraction Multiplication DivisionOptions :Single Model,two packs ,4 packsInk:Self-inking ,10 ml eachUse:10000 times and over Warranty:3 months warranty ,any questions ,chat us .package included :1 Pack: 1x math roller stamp,1x ink ,1x plastic storage box2 Packs: 2 x math roller stamps,2x inks ,2 x plastic storage boxes4 packs: 4 x math roller stamps,4 x inks ,4 x plastic storage boxes inks : 2x 10 ml inks Main Features:Super fashion design math toy for kids ,Addition Subtraction Multiplication Division below 100,all in one set.2.【Roller Digital Teaching Stamp】Adjustable numbers, gently rolling, can efficiently and quickly print out math practice questions within 100. The digital teaching stamp roller is a fun and meaningful gift for your children and friends' children!3.【Mathematics Skill Development】Rotate and adjust the column, and 10 different queuing methods can be adjusted. Satisfy all addition and subtraction numbers from 1-100, and cultivate children's logical calculation ability.4.【Can be Used Repeatedly】The math roller stamp is small and exquisite, easy to carry, and can be reused after adding ink. The imprint is clear, the color does not fade after drying, and it is not easy to smudge. Add printing ink, which can be used repeatedly, easy to use and fun.5.【Improve the Efficiency of Learning】You can quickly prepare math problems for your kids at home, just roll the stamp, you can quickly print math problems, and it dries quickly, convenient and practical. Arrangement needs to be changed every 10 math problems to avoid duplication.6.【Smart Maths Roller Stamp for Kids Education】This is a great gift, when children need to practice math problems, parents can quickly prepare them for them, and children can also prepare for each other and learn together.