Type of school: All vocational colleges in Baden-Württemberg according to the new curriculum for courses leading to the Fachhochschulreife. Concept: The workbook, which is exactly coordinated with the textbook, is clearly structured and contains many exercises that are solved in detail in the booklet. Pupils have the opportunity for self-diagnosis. The exercises enable independent and successful learning. The solutions are at the end of the booklet. The workbook can also be used independently of the textbook. New in the 4th edition. Explanatory videos serve to illustrate problems and explain ways of solving them. They support the learners in discovering mathematical relationships. The solutions are removable.