
This study aims to analyze the implementation of the strategy of teaching by the pars by the teachers at the time of a sequence of class in gymnastics. In reference to the theories of the socio-constructivism of Vygotsky (1978) and situations of Brousseau (1986), it is a question of showing the various adaptations operated by the teachers in spite of the difficulties which they encounter at the time of the implementation of this strategy. The analysis of the results in reference to the theoretical framework reveals that during the execution of the tasks, the teachers invite the pupils to form small groups in which they responsabilize some of them having the control of the elements gymnic.However, certain teachers do not manage to find situations of alternation of role between learning. What could create psychological frustrations at the pupils? Also, all the pupils in difficulty do not manage to find satisfaction because sometimes of the failures on the level of the tutors. In order to check the attack of the objectives and the conformity of the indications of the tutor to the standard, the teacher does not cease making turns on the workshops. Thus, it would be essential for the teacher to appropriate all the characteristics of the implementation of this strategy and to be aware of his role as a guide and supervisor.