This research focuses how a lecturer has promoted the process of constructing scientific concepts by his students, future biological teachers, through the analysis of his discourse. In this sense, five of his theoretical and practical lessons were observed, audio recorded and transcribed. By means of a microgenetic analysis, theoretical contributions of a historical, cultural and enunciative approach data were constructed and interpreted. Results reveal some aspects that have characterized the complexity of teacher-student interactions and some discourse strategies used by the lecturer in order to assure his knowledge transmission, as well his consideration for the students' ideas and doubts.
Teacher-student interactions; conceptual process; initial teacher education