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 diploma, secondary 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, and stringent reading promotion. Self-evaluation is encouraged through a German-as-a-big-language methodology. The structure is transparent, featuring topic chapters with two main areas of competence and training units, as well as genres, authors, and media. Training includes working techniques, spelling, and grammar, with workbooks that come with solutions and a CD-ROM in two versions. The workbook serves as a basis for fundamental requirements.