DescriptionThis is a portable kids teaching aid ruler, made of good material. This versatile decomposition ruler can improve the kids' ability of add addition and subtraction. Can be the perfect gift for your kids or your friends' kids, very useful and practical.Features- Color: As shown. - Material: Wood. - Size: About 22.50X22.50X1.50cm/8.84X8.84X0.59in. -The product is made of wood material, high-class and sturdy, durable and safe.- The is smooth and clean with high technology, kids can play it safety.- Great educational number puzzle can help your kids know number and math.- Our math ruler are meaning that they're hands-on for kids to learn on their own.- Enough numbers for working multiple problems at once, practical and convenient tool for teens learn to count.
