Investigações Geométricas Explorando Dobragens e Cortes de Figuras Planas um uma Turma do 8º ano do Ensino Fundamental

Abstract

This article presents a study on the exploration of geometric investigative tasks through folding and cutting, which had the general objective of analyzing the discoveries of students in an 8th grade class of elementary school in a public school in Tefé - AM. Of the specific objectives, they had to describe the findings arising from the investigative task involving flat figures, highlight their involvement during the task and identify the difficulties that occurred during the task. The data from this scientific study with a qualitative approach, the instruments used to collect the data were the researcher's and students' notebooks, a voice recorder and participant observation as a technique. For data analysis, a qualitative descriptive analysis was used. As a result of this work, it was proven that probing geometric investigative tasks exploring folds and cuts stimulates the student to build knowledge with autonomy, since they found mathematical relationships involving flat figures emphasizing symmetry, perpendicularity and also the concept of triangles. By using one fold and two cut found quadrilaterals and triangles. Therefore, the development of investigative tasks in the classroom can contribute to both teaching and learning.