Razão e proporção para além da sala de aula

Abstract

This study has as its objective to describe the concepts of ration and proportion through everyday situations, seeking to establish matches in the reader’s practical life with mathematics taught in schools by analysis and problem solving. The presented models can be used by teachers and applied in classes of elementary school, and also may be useful to those who wish to comprehend the concepts in order to apply them in mathematical situations which can be solved by the use of these important means. We aimed to develop a detailed study, applied and diversified, of the ratios with the objective of guaranteeing to the reader solid fundaments for its comprehension and to solve proportion problems, known as The Rule of Three and Percentage, through methods which use logical analysis of easy comprehension, even for those who are not familiar with mathematics.