1. Comprehensive Learning Set: This 144piece flash card set covers essential addition and subtraction facts, making it an resource for homeschooling or classroom learning. The variety of cards helps build a solid foundation in basic mathematics. 2. Rewritable: Featuring a unique rewritable design, these flash cards can be used repeatedly, making them suitable for ongoing practice and review. Simply write and erase to reinforce math facts until your child masters them. 3. Engaging and Colorful: The bright, colorful design of these cards adds an element of fun to learning math. They help maintain students' interest while making the study of addition and subtraction more visually engaging. 4. Portable and Convenient: This set of math flash cards is compact and easy to carry, allowing for onthego learning. Whether at home, in the car, or on vacation, your child can practice essential math facts anywhere.