This study addressed Algebra, focusing on the equations of the second degree. For this purpose, the general objective was to compare this content in three textbooks of Mathematics for the 9th year of elementary school II ...

This paper aims to study to understand some of the difficulties presented by students of the 9th grade of elementary school, teaching and learning quadratic equations, and propose an educational alternative with different ...

Este volume contém vários módulos de matemática. Em cada módulo é apresentado o título, assunto, matéria, pré-requisitos, objetivos, pré-teste, procedimentos e atividades, pós-teste, gabarito, bibliografia e glossário. ...