This article reports on a design-based methodology of a thesis in which a fully face-to-face contact module was converted into a blended learning course. The purpose of the article is to report on how design-based phases, in the form of micro-, meso- and macro-cycles were applied to improve practice and to generate design principles. Design-based research traditionally is associated with multiple iterations of design, development and revision over a long period of time. This challenges the idea of design-based research being an appropriate methodology for a short-term thesis or dissertation. We argue that graduate students who are limited by time constraints can also conduct educational design-based research as long as the relevant phases are followed, which can produce significant, appropriate and effective design principles. This article suggests that the scope of design-based research should not be limited to long-term projects only, which restricts the value of implementing this methodology to improve practice.