This research began considering pedagogy requires permanently to the pedagogical act is reflected in this sense, research the general objective: To characterize teaching practice from master narratives basic sciences at the University Corporation of Costa because according to UNESCO (1995), teaching practice is a fundamental change and development of higher education factor. The research methodology established content analysis as a technique appropriate to describe an objective and systematic qualitative research, the manifest content or implicit in a data source, which in this case was a questionnaire, this virtual instrument access. The results of the technique, 331 and 118 units of analysis codes, position the research not only within a framework of innovation by using the computational tool atlas you; but determine which is the best way to handle this volume of information; therefore the research results in axial coding allows, emerge two categories. In the conclusions, the findings of reflective practice and traditional practice, provide answers to the question that guided the research, but above all, realize the deeper meaning of professional ethics of teachers in Basic Sciences, to describe in its narrative form simple and true aspects of their teaching, perhaps because they understand that this is the first requirement to approximate a reflection on action, also referred to evaluation processes, not as part of the penalty, but as institutional tool of continuous improvement.