Information on the series edition: The proven basic concept of Doppel-Klick has been extended and differentiated for heterogeneous learning groups, providing targeted preparation for the intermediate school leaving certificate, high school connectivity, and trainability. Differentiation is made easy with transparent differentiation on two levels and additional material for inclusive teaching. The principles include clear progression in the acquisition of competencies, integrative and systematic learning, intercultural and interdisciplinary learning, consistent method training, stringent reading promotion, and self-evaluation. The German-as-a-big-language methodology features a transparent structure with topic chapters that include two main areas of competence and training units. It covers genres, authors, and media, along with training on working techniques, spelling, and grammar. The workbooks come with solutions and a CD-ROM in two versions: the workbook Basis for Basic Requirements and the Workbook for the Work.