Revised Edition The revised edition of the world of numbers places great emphasis on a clear structure that facilitates orientation both on individual pages and throughout the entire book. The various content areas in the student book are color-coded according to the subject-related competencies outlined in the curriculum guidelines. The process-related competencies to be acquired are identifiable in the table of contents. The tasks in the student book and accompanying materials are marked according to the three areas of requirements of the educational standards. Through meaningful learning opportunities, children are encouraged to explore their own paths, articulate them, and reflect on them together. They are prompted to independently transfer basic tasks and draw conclusions about new concepts, thereby building interconnected knowledge. Technical terms and important content are captured in the form of highlight boxes.