The proposed booklet presents the fundamental contents on the different materials, alloys and their treatment, providing valuable information for the user, orients and regulates the instruction of those who work with it, explicitly or implicitly, it is usually motivating in itself. It offers environments to explore, investigate and search for certain information, it is susceptible to change, due to its capacity for redesign and argumentation in correspondence with the results of the diagnosis, the goals and the needs and interests of the teachers, allowing the combination of contents in different ways and the incorporation of new information.

It can be used to take up new knowledge, professional problems, among others, with the purpose of consolidating, enriching, deepening and applying the contents in new and varied circumstances from a concentric organization of these according to the needs of the teachers, considering the potentialities and limitations of the level of knowledge, skills, habits, values, experiences and motivations of the teachers in order to provide differentiated attention to their preparation. .