Information on the series edition: The proven basic concept of double-click has been extended and differentiated for heterogeneous learning groups, providing targeted preparation for the middle school leaving certificate, grammar school connectivity, and training ability. Differentiation is made easy with transparent differentiation at two levels and additional material for inclusive teaching. The principles include clear progression in competence acquisition, integrative and systematic learning, intercultural and cross-disciplinary learning, consistent method training, and stringent reading promotion. Self-evaluation and German as a second language methodology are also included. The structure is transparent, with topic chapters featuring two main areas of competence and training units. Genres, authors, and media training focus on work techniques, spelling, and grammar. Workbooks with solutions and a CD-ROM are available in two variants, including the workbook "Basis für Grundanforderungen.".