This paper investigated the interaction and the negotiations generated by communicative activities proposed in a French as a second language (L2) basic class. Based on the socio-interactionist theory (Vygotsky, 1998), the results show that the interactional process encourages the exchange of information among learners, helping negotiation. Besides that, learners also use mediating strategies to do the negotiations. The learners receive modified input and have more opportunities to produce comprehensible output. This paper, therefore, shows that, to negotiate, to understand and to produce L2 texts, the learners committed themselves, becoming responsible agents, and, above all, collaborators in the L2 learning/teaching process.