ABSTRACT
This chapter aims to spell out some of the possible argumentative grammars for design research. It focuses on the "logy" of methodology in terms of argumentative grammars, so the logic behind using particular research methods. The chapter suggests an argumentative grammar that can assist in answering a research question of the following form: How can an intervention with characteristics C support learners to achieve learning goal G. It problematizes A. E. Kelly's focus on the structure of argumentation. The chapter proposes simpler reasoning structures to alert early career design researchers to the types of claims they are able to make. It discusses the logic behind studies that address questions to ensure an answer to the main how-question and thus provide a proof of principle for how something can be achieved.
