Online and face-to-face courses are often viewed and studied as two distinct worlds, but the social field of the teacher who teaches them may well include both, and both the teacher and the courses he or she teaches may be transformed by the movement from one environment to the other. Susan Lowes explores this two-way interaction between face-to-face and online teaching, addressing two important questions: Do teachers who move between face-to-face and online classrooms transfer ideas, strategies, and practices from one to the other? If so, which strategies and practices do they transfer? Particularly, Lowes focuses on the constraints and affordances of the online environment itself and how these affect face-to-face classroom practice. (Contains 13 exhibits.)