Uma proposta de ensino de gráficos de funções quadráticas por meio de materiais manipuláveis.

Abstract

The study of quadratic function graphs in basic education begins in the 9th grade of elementary school and continues in high school. Through experience in teaching this content in the classroom, we realize the difficulty students have in constructing graphs and in understanding the meaning of each coefficient. The aim of this paper is to propose a strategy for teaching quadratic function graphs through manipulable materials. We elaborated a material that allows us to analyze the variation of one of the quadratic function coefficients while keeping the others fixed. Our proposal can serve as a support to the teacher in classes on the study of the behavior of a quadratic function graph.