The work done so far has shown us the potential of the teacher training opportunities offered by the elaboration of classroom videos. We believe that the use of these videos will enrich the prospective teachers' teaching proposals. It will allow them to compare their ideas with real practice, and then to reflect on and analyse that comparison. Moreover, exercises with images captured from the videos will encourage their participation free from the corseting of academic discourse (Ezquerra, 2004, 2008). However, one will have to bear in mind that even a single image, and more so a sequence of images, shows so much information that it can distract or hinder the assimilation of the information that is really relevant. What the individual usually does is select only what is important to them (Soler, 2002). In other words: "In the perception we see a confirmation of reality, and at the same time of ourselves" (Doelker, 1982). Therefore, trying to determine which aspects are most attractive to our students might be an interesting starting point from which to attempt to discover what they see and what goes unnoticed,
what is important to them and what is ignored, on what to insist, and how to provide them with tools with which to analyse the reality of the classroom.