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Decorating formulas, graphs and tables are common in mathematics teaching. However, this paper presents a proposal for Mathematical Modeling applied to Elementary Education as a teaching-learning tool for primary school functions analyzing water and electricity bills in a public school. The survey was conducted in 2019, and compared student learning using the traditional Teaching method with the Mathematical Modeling method. The methodological procedures of the Mathematical Modeling activities follow the following steps: choice of theme, theoretical explanation and research carried out by the students, problem solving, problem solving and critical analysis of the solutions. The detrimental results that the general performance of the students in the N1 stage varied from 2.5-7.5, while after the application of Mathematical Modeling the results varied from 6-10, showing that the adopted methodology improved the students’ learning. The results obtained using PCA on the methodologies of Traditional Teaching (N1) and Mathematical Modeling (N2) showed that the two variables analyzed clearly separated into 4 distinct groups. In this context, a Mathematical Modeling proved to be a great alternative and a great ally for the teaching of functions of 1st degree compared to the Traditional Method of teaching.

Modelagem matemática no ensino fundamental: estudo de funções 1º grau analisando contas de água e energia elétrica