ABSTRACT
Many studies have shown that it is indispensable to involve teachers as agents in any process of educational improvement. In the awareness of this, it is of great interest to us to try to better understand the knowledge that we, as teachers, use in performing our work and the processes that might favour its further evolution. Having a clearer picture of our professional knowledge should hopefully help not only to improve our own teaching but also be a small contribution to educational improvement in the school in general.
