Résumé:
Recently, great attentions have been oriented towards the communicative properties of language. However, teaching and learning the speaking skill represents a great challenge for both teachers and learners. and this is seen in the students’ low achievement at their oral performance. Moreover, the teaching of foreign language by its nature is an interactive process that involves an active participation of both teachers and learners. This research investigates the effect of the cooperative learning on the students’ speaking skill. It explores the effectiveness of implementing the group work method in developing the students’ speaking skill during the oral expression classes. The study was conducted with teachers and L2 students from the English department of the university of Mostaganem. Based on some assumptions three hypotheses were build up.