A geometria no 8º ano do ensino fundamental: um olhar para os livros didáticos com base na BNCC

Abstract

Geometry executes a fundamental role in the development of logical reasoning and Mathematics development over the history of humanity. Besides, it contributes to increasing the notions of space and of individuals' location in this space, which justifies the importance of studying it in Basic Education. Recognizing the importance of learning geometry in Basic Education, it sought to bring a brief history contextualization of geometry teaching in Brazil, just as the presence and use of the textbook in the teaching and learning process. The main concepts of geometry to study in Basic Education are listed on the Brazilian National Common Curricular Base (BNCC) of 2017, which presents competencies and abilities to be developed by learners. This research has aimed to analyze textbooks of 8th grade from two collections frequently used in the public school of Santa Catarina State: Araribá Mais Matemática and the collection Matemática Essencial both developed from the establishment of BNCC. It sought to examine if the contents presented in the books promote the development of geometry abilities proposed to the Mathematics area. During this research work database was analyzed based on Text and Discourse Analysis and the organization of the data was done by categorization. The analysis results point out that in both textbooks the majority of abilities are included, in other words, the content presented and the manner of its presentation are favorable to the development of the abilities proposed by BNCC.