出版社：Instituto Universitario de Tecnología Tomás Lander
摘要：This research arises as part of the process of action research carried out by the members of the chair of general Chemistry, in the search of improvements in the teaching and learning of chemistry. In this sense, it was considered to work on the submicroscopic level of the matter, through the use of tridimensional molecular models. Models help to explain the structure of matter, inspire the imagination, stimulate thought and assist the visualization of chemical phenomena. The purpose of the work was to implement the strategy of molecular models in structural chemistry contents, in the Fundamentals of Chemistry course in the UPEL-IPC. Among the issues discussed, were included: States of aggregation, chemical bonding, nomenclature and chemical reactions. In these contents students presented difficulty in comprehension which may be due to the conceptual complexity and non-differentiation of the levels of Chemistry. This is how this strategy contains an action plan where the student is an active participant, ranging from the elaboration of the model with low-cost materials, to the design of the spatial form and types of molecules links. The study was framed in the sociocritical theory which wants to make evident the changes in the studied reality. In terms of the obtained results, it was observed a high level of participation and motivation of the students in the contents where molecular models were used, during six academic periods. However, there is no evidence of having led to a significant learning in the submicroscopic world.
