What if young readers could learn multiplication, division, geometry, and other math concepts alongside a cute blue monster as well as their classmates? It would make the learning so much more fun! In this helpful set, readers meet Mo, a monster who needs help learning some basic math, including measuring, addition, and fractions. Over the course of each book, Mo--and readers-- will investigate the building blocks of each of these curriculum topics. Diagrams accompany each concept to aid young mathematicians in working through problems and showing them how to apply that knowledge to many other math questions.