The revised edition of the world of numbers places great emphasis on a clear structure, which facilitates orientation both on individual pages and throughout the book as a whole. The various content areas in the student book are color-coded according to the content-related competencies of the curriculum. 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. This creates a vocabulary repository that connects technical language with foundational concepts. In the interest of goal transparency, children are encouraged to assess their own work results and gradually take on more responsibility.