There is a frequent combination of expositive methods and group or team, both in undergraduate studies at the graduate, but still gives the teacher an important role in managing the exposure in the development of classes in the case of undergraduate. According to the results obtained, it appears that the teaching style correspond to a class that uses the exposure through dialogue, wich could range between high and medium interactivity. The application of the technique of Flanders has allowed us to examine the dynamic features that interactivity in the classroom. We consider it very important to have found that there is a tendency to increased communication via e-mail, though more in the case of graduate (master´s) than the undergraduates.