What more is there in and for science education to do in terms of researching sciencelessons? A lot, the author suggests, if research turns away from studying scienceeducation extracting social facts using special methods, which journal articlesrequire to state, to studying the work and methods by means of which participantsthemselves create their structured world of science lessons. This book presents, with concrete materials from an inquiry-oriented physics course, a way of doingscience education research that radically differs from existing approaches. This bookarticulates this approach for a science education audience, where this approach isby and large unknown, and where the primary literature is often experienced asimpenetrable and as requiring years of work to gain entry. Consistent with thisdifferent approach, those materials are used that constitute the way in which therefl exive production of social order is observed by the actors (teachers, students)themselves.