Aspectos históricos e diferentes representações dos números racionais em livros didáticos do ensino fundamental.

Abstract

In this article we present the results of a qualitative research, of a bibliographic nature. The information obtained occurred through the analysis of the mathematics textbooks of the collection - Apoema - by author Adilson Longen, from the final years of elementary school (6th, 7th, 8th and 9th year) used in the last triennium (2019-2021) ), focusing the analysis on the units of each book in which the sets of rational numbers were presented. The general objective was to analyze the historical aspects and the different representations of rational numbers present in textbooks. The results obtained indicate that textbooks still present the historical aspects of rational numbers in a very simplistic way and do not make relationships between the different representations of this type of number. Because, they only present the rational numbers, such as the decimal numbers and the percentage, which are displayed in different units from the rational numbers without having any information that these are also part of the set of rational numbers.