Abstract
A pilot experience of teaching innovation on the EEES framework is being developed at the Faculty of Chemistry (University of Valencia) since 2003−2004 academic year. One of the main objectives has been to design collaborative activities based on active methodologies, in which the student becomes the centre of the learning process. Among them, the most enriched and, probably, best valued by the first-year students, is the teamwork designed with a "mini-symposium" format, that is, with oral and poster presentations. Here, we present the evolution and results of this activity from the beginning until its present format.