Theorizing in Design Research

Topic-specific Didactical Design Research is a research methodology with two aims, 1) designing and improving teaching-learning arrangements and 2) generating theoretical contributions for understanding the initiated teaching-learning processes for a certain topic. The article provides methodological reflections and examples for elaborating the meaning of theorizing within this methodology. Starting from a distinction of categorial, descriptive, explanatory, normative and predictive theory elements with their functions and logical structures, the examples show that theorizing in Design Research studies can be conceived as a process of successively developing and connecting theory elements, for the how-questions (the rationales for the arrangements) and the what-questions (the structuring of the learning content). The considerations are illustrated for the case of topic-specific Didactical Design Research for language-responsive classrooms, particularly in relation to language learners’ conceptual understanding of fractions, variables, and percentages.