Discover Math Matters! With over 15 million books sold worldwide, this award-winning series of easy-to-read books will help young readers ages 5-8 approach math with enthusiasm. Great for fans of MathStart or Step into Reading Math. Jen must share her room with her little sister, Lucy. When Lucy starts taking over, Jen decides it's time to put some distance between herself and her new roommate! With engaging stories that connect...