Book excerpt: Kumon Workbooks teach children one specific skill from start to finish. The Kumon Method introduces concepts step-by-step, helping children to master each skill in turn as they gain confidence in their abilities and gather motivation to continue learning. Self-directed, Kumon workbooks are designed to nurture good study habits for students who need remedial or enrichment work. Exercises in this book include: identifying factors & common factors, multiples & common multiples; learning the properties of circle; reducing fractions; using ratios; understanding measurements; and more