Estudo de função: uma proposta de reconstrução de atividades do Imagiciel mediadas pelo GeoGebra

Abstract

The research aimed to verify to what extent dynamic constructions in GeoGebra and applied in a sequence of activities make it possible to facilitate learning of function or the real function defined by sentences. Some constructs for the teaching and learning of function concept, present in the Imagiciel, a computational environment and five notebooks with activities developed by French researchers between the late 1980s and early 1990s, which don't run more in current computers, were rebuilt in GeoGebra. With such elaborate reconstructions in this free software with more features and accessibility, some proposals present in a notebook of the Imagiciel were organized in a sequence of activities inspired by the Dialectic Object-Tool and applied to a group of students in the first year of high school. As research methodology Didactic Engineering elements were used with a priori and a posteriori analysis. With the posteriori analysis of replies given by the students of the survey, by the interaction between them and with the buildings established by the GeoGebra applet shape’s, it was found that the activities allowed students to build the concept of function, in particular, the function defined by sentences in real intervals and so answer the question this research