This article is the result of the research project ?Case studies on teaching practices of memorable teachers which promote critical thinking in college?. First, the theories and concepts that frame the research are explained. Thenthree case studies are reported in different university institutions in the central region of the Argentine Republic. Generalities and specificities that emerge from the analysis are marked. The results are then systematized according to the level of complexity of the teaching actions and the abilities developed by the students thanks to the work of memorable teachers.