Methodological actions, a way to develop the ability to explain from the general chemistry (Original)

Abstract

The current study plan of the mechanical engineering career of the University of Granma includes in the second semester of the first year, as a basic subject, the General Chemistry, in which the final exams, in its three calls, are carried out orally. The work presented is generalization of a master's degree and its purpose is to demonstrate the effectiveness of the proposed methodological actions in the development of the ability to explain to improve the teaching-learning process. It is based on the problémico approach, the systematization, the gradual increase of the complexity of the tasks and the independence of the student. The application of the matrix method to the General Chemistry program justified that the contents are introduced in a logical order, a necessary question for the establishment of models that respond to the dynamics of the current teaching-learning process. There are notable differences between the initial and final pedagogical test evidenced by the application of the nonparametric Wilcoxon test for a significance level of 0.05. This is achieved by developing the ability to explain in students, corroborated by the measured indicators.