While other workbooks try to cover a wide range of topics in each book, Kumon Math Workbooks tackle one skill set per book. We believe having one specific goal helps children focus on mastering one skill completely. Just like our popular pre-school workbooks, Kumon Math Workbooks are based on the Kumon Method, a learning system designed to help each child reach his or her full learning potential. These workbooks are also correlated to state and national standards in order to ensure that the content is appropriate for your child.