It is a research about the possibility of using teaching strategies with an
eminently constructivist approach to teach basic concepts of chemistry in high
school classes of the Modular System of Teaching-MST in the riverside region
of Marajó and, after analyzing the results of some didactic interventions that
was propose from these ideas, we will present a didactic product with such
didactic suggestions. Initially we discuss the influence of the constructivist
approach in teaching and learning in the last decades, as well as the historic
route of the chemistry teaching in Brazil since the time of the Brazilian colony.
Next, we present a characterization of constructivist didactic strategies, such as
Predict, Observe and Explain, from its origin, in the researches about alternative
conceptions realized in the decade of 1980, until some didactic research related
to these and other strategies fulfilled in Brazil. Two didactic interventions were
develop to evaluate the relevance of teaching strategies it were proposal. In the
first one were detected some technical problems that were tried to heal in the
second didactic intervention realized. The results obtained in the second
intervention were quite satisfactory, because the students developed the
activities in a more enthusiastic way and they went beyond when the students
were able to relat the concepts studied with the riverside context in which they
are inserted.
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