Kumon publishing north america・Language: english・Book - my book of numbers 1-120 (kumon's practice books)Kumon workbooks are based on the Kumon Method an educational philosophy that aims at unlocking the full learning potential of each individual child. The Kumon Method introduces learning concepts in an incremental step-by-step approach allowing children to master new skills easily and without anxiety or frustration. As a result children gain confidence in their abilities and are motivated to learn on their own.