摘要：This article is interesting in describing and analyzing the joint didactic activity of two teacher’s with their students in swimming in Tunisia. Its objective is to determine the influence of the teacher’s training and their experience in staging and in the regulation of the didactic situations. To clarify better the complexity of the observed reality, this study uses “ordinary didactics” (Schubauer-Leoni & Leuteneger, 2002) as a method of observation and it relies on the triplet of “the genesis of knowledge” (Sensevy, 2007) like an instrument of analysis. This qualitative research tries to analyze the didactic system with questioning the effect of proficiency degree in swimming. Results put in evidence in the conjugated effects of teacher’s training and their professional experience on their practice improvement.
