Gomez et al. (1993), indicate that among the fundamental objectives of group work as a teaching strategy is the strengthening and increased sense of responsibility, the capacity development of cooperation, strengthening communication skills, the revitalization of intellectual skills and professional and consequent facilitation of the growth process of the student and the teacher in the sense of becoming better human beings and citizens more and more. These advantages granted teamwork must be transformad into a set of criteria prevailing pedagogical work in schools in our district, since the intervention group appears to be safer and more effective than individual development, because by promoting the collaboration educational provísion is more effective in the analysis of problems that are common to all the possibilíty of better and multiple criteria. lt is in this context that teacher...