English Summary/英文概要： Quirky characters drawn in comic-book style introduce basic mathematics concepts in this comprehensive book. Story problems help students with a primary reading level of 3 through 5 develop a fundamental understanding of mathematical operations and teach them techniques for solving real-life math problems. Designed in collaboration with elementary mathematics education experts, this book is appropriate for kids who are just beginning to learn math concepts, as well as older readers who can benefit from review and reinforcement.