When talking about pedagogical theories, the first thing to stress is that it is difficult to find something new that has not been said before. In this field, much of what is called innovation comes from earlier times. Theories, conceptions and research have developed a great deal in the field of education. This means that educational systems face new challenges, with all the limitations that this implies. It is also evident that knowledge emerges with growing force that promotes social development. Therefore, it is necessary to implement pedagogical projects based on advanced forms of teaching that support the training of individuals, professionals capable of responding to the demands of the contemporary world. [For the complete Volume 21 proceedings, see ED629259.]