Kumon Workbooks use a step-by-step, logical approach to help children master skills and stay motivated to learn on their own. They are unique because they focus on teaching one specific skill from start to finish. Everything about these workbooks, from their sturdy paper to their engaging content, is designed with the best interests of your child in mind. Highly Recommended! Each Kumon Workbook is 8 1/4" x 11 2/3", paperback, 80 pages, and full color.