Monitoring the learning process in computer supported collaborative learning (CSCL) environments is a key element for supporting the efficacy of tutor actions. This article proposes an approach for analysing learning processes in a CSCL environment to support tutors in their monitoring tasks. The approach entails tracking the interactions within the communication platform to identify cues of the participative, social, cognitive, and teaching dimensions of the learning process. Both quantitative and qualitative indicators are employed to achieve a complete and thorough picture of the learning dynamics. A set of methodological and technological tools based on this approach has been tried out in the context of the online component of a blended course in educational technology addressing trainee teachers. The results of the study support the applicability of the proposed approach to content domains where discussion and reflective practice are the most effective learning strategy. (Contains 6 tables and 4 figures.)