COOPERATIVE AND COLLABORATIVE LEARNING TO TEACH CHEMICAL EQUILIBRIUM TO FRESHMAN STUDENTS. This paper describes cooperative (jigsaw) and collaborative activities (Peer-Led Team Learning) carried out in the BSc degree in Chemistry at the São Carlos Institute of Chemistry, the University of São Paulo, Brazil. The dynamics of discursive interactions established among students in the cooperative and collaborative groups was investigated based on the Model proposed by Kumpulainen and Mutanen, by analyzing the following: functions of speech, cognitive processing and social processing. In this perspective, the influence of the level of structure of the activities was studied. The results obtained point to the possibility of adapting both types of activities in higher education chemistry courses.