Singapore Math's Primary Math, Standards Edition series features the Concrete> Pictorial> Abstract approach. Students begin by learning through concrete and pictorial means before moving into abstract thought and development, which encourages an active thinking process, communication of mathematical ideas, and problem solving. The spiral approach encourages mastery through the modeling method, which helps students to visualize problems as they work on specific skills. These non-consumable textbooks are meant to be completed with adult supervision and teaching. Featuring the learning tasks, practice and review problems, the Primary Mathematics Standard Edition Workbook is designed to be used alongside this text for necessary practice. Please note: The Primary Mathematics Standards Edition resources cannot be used interchangeably with the Primary Mathematics U.S. Edition resources. Answers are in the sold-separately Primary Mathematics Standards Edition Home Instructor’s Guide.