TEACHING-LEARNIG OF STOCHIOMETRIC CALCULATIONS IN CHEMISTRY: PROBLEMS AND PERSPECTIVES
stoichiometry, teaching-learning, contextualization, dimensional analysis
The content of Stoichiometric Calculations has long been discussed in the Chemistry discipline. The difficulties presented
by students and, why not, by teachers, related to this content are countless. In this dissertation we address some of these
difficulties, as they are very relevant in the teaching – learning process of Stoichiometric Calculations. The main objectives
were to identify possible variables associated with student learning in relation to this content. To this end, semi-structured
interviews were carried out with ten chemistry teachers from public and private schools in the Distrito Federal. The data
collected, which analyzed using Grounded Data Theory. In addition, six works (books) were also analyzed. One from
each collection suggested for New High School. Due to the complexity of this teaching - learning process, the results
found show that is no way to dissociate the difficulty presented by students, with regard to teaching Stoichiometric
Calculations, without aspects related to teachers, textbooks, teaching methodology of the of this content itself, and even
the students themselves, are not taken into consideration. Therefore, in principle, possible solutions for improving the
teaching and learning of Stoichiometric Calculations must simultaneously take into account the presence of these
aspects.