Food and Waste as a Theme for Problem Solving

Abstract

This experience report presents a pilot lesson developed in the Problem Solving course, carried out in the first year of the Mathematics Teaching Degree at the State University of Paraná (UNESPAR) – Paranavaí Campus, during two class hours. The proposal integrated mathematical content (fractions and percentages) with the theme “food and waste.” Using an informational text on food waste and fictional data about school meals, a problem situation was designed following Pólya’s (2006) model, encompassing the stages of understanding, planning, executing, and reviewing. The activity involved critical reading, waste calculations, and the development of sustainable solutions, as well as the creation of educational posters. The goal was to raise awareness about food waste and apply mathematical concepts in real-world contexts, fostering meaningful learning. The methodology included group work, solving contextualized problems, and producing visual materials. The results showed that contextualization with social themes promotes engagement and critical understanding, strengthening interdisciplinarity and civic education.