A path for every direction Entry direct access to the topic; opportunity for argumentation and communication; leading to the core of the learning unit Task 1 including solution for independent review and development of learning strategies Information Highlighting and explaining important terms, procedures, and mathematical principles Practice a wide variety of tasks with clear task differentiation, repetition, and self-diagnosis options Special feature self-initiative Task 1, including a worked-out solution, is suitable for independently working through or reviewing new as well as previously learned content. This structure of the learning units has proven effective and successful in school practice over the years. As diverse as a good team Special attention is given to practice. The task material is extensive and balanced in variety. The workout solidifies.