The elaboration of didactic learning units oriented to create methodological advantages for students could be an important effort of the educational process in University. The didactic learning units presented in this paper have the objective of complementing the class notes and the teacher's lectures. In order to improve the quality degree of education, these complements for students have been carried out in this work. The didactic learning units were developed for each topic in some subjects coursed in the Defense University Center of Marin (Spain) for the subject of Materials Engineering. The units try to simplify and to streamline the learning curve of the student. All of them have a common structure and explain the basic principles of the topic. At the beginning of document, the competencies of Bologna Process contained in each educational unit are detailed. Moreover, theoretical explanations about the topic are supplemented with several schemes and figures, which provide a clear view of all contents. Furthermore, they include a kind of colour speech balloons whose purpose is to exalt important concepts of the unit thematic. Other type of speech balloons shows anecdotes about lesson, which goal is to generate interest and curiosity by student. At the end of didactic learning units, there is a test with some basic questions to student self-assessment. If the subject allows practical exercises, the didactic learning unit includes some solved problems and several proposed problems. Finally, these educational documents were complemented with "knowledge pills", which are videos uploaded in the University network, available for students. In them, the teacher shows a presentation oriented to the educational learning unit presented.