Universal Abacus Level-1 (Book-B) www.abacusuniversal.com

Universal Abacus INC Academy’s Book-B is the practice book of Level-1. If you want a detailed explanation of each concept then rather go for Book A of Level-1. There are many ways to teach numbers to kids. Abacus is a great tool to teach your child simple math such as counting, addition, subtraction, multiplication, and even division. This is the “B” book of Level-1, which contains Plus and Minus of Single Digits number.