Information on the series edition: Clear structure: systematic, integrative, and differentiated acquisition of basic knowledge in the main learning area with "Test yourself!" pages. Linking with the second learning area and parallel differentiation in the "Challenge and Support" pages. Classwork training or project suggestions in the "Fit in ..." pages. Basic principles: diagnose, differentiate, teach skills. Free online diagnosis. Consistent differentiation at different levels. Transparency of learning: advance organizer, self-diagnosis. Process-oriented preparation for class tests. Independent and cooperative learning. Differentiation and support: support materials in the folder. The folder offers support materials for weaker students at middle school levels. The self-explanatory copy templates can be used as a supplement in class or for self-learning.