This thesis presents a proposal for the teaching of Physical Computing in an undergraduate Design course, based on the Reflective Practice methodology defined by Donald Schon (1983). The study comprises de definition, conception and implementation of a Physical Computing learning environment. In the study, the context of Ubiquitous Computing defined by Marc Weiser (1991) is explored, and a relation between this context and the field of knowledge of Physical Computing (O SULLIVAN, 2004) as an emerging area of Interaction Design is established. The Physical Computing Learning Environment is proposed after a series of initiatives that comprehend the development of academic disciplines, interdisciplinary collaborative processes, and the creation of a laboratory. Subsequently, we present a discussion about the results of the creation of this environment. In the discussion, we investigate how and why the experience in the Physical Computing learning environment was determinant in the definition of the methodological Design processes used, in order to understand what are the characteristics of such processes and its results.