https://repositorio.ufu.br/handle/123456789/21774 2026-07-17T14:45:13Z https://repositorio.ufu.br/handle/123456789/48842 Title: Explorando a fatoração de polinômios do segundo grau com as mãos: um recurso tátil para a educação inclusiva Abstract: This study aims to develop, analyze, and validate a tactile didactic tool for teaching the factorization of second-degree polynomials to students with visual impairments. The choice of theme stems from the identified scarcity of algebra-focused materials within Inclusive Education contexts, as observed by the author during his teaching internship. This experimental research involved the modeling and 3D printing of three versions of a manipulable artifact, following an iterative process of creation, internal testing, and validation with visually impaired participants. The analyses were based on the SAI model (Instrumental Activity Situations), highlighting the interactions between subject, object, and instrument throughout the process of instrumental genesis. The results showed that the material supports understanding of factorization through the spatial organization of the pieces and has potential to assist in solving quadratic equations. However, it has limitations, such as its restriction to polynomials with integer and factorable coefficients. It is concluded that the tool represents an accessible and promising alternative for teaching algebra in inclusive educational settings. 2025-05-15T00:00:00Z https://repositorio.ufu.br/handle/123456789/48510 Title: A prova dos noves ou noves fora 2025-09-19T00:00:00Z https://repositorio.ufu.br/handle/123456789/48502 Title: Explorando a fatoração de polinômios do segundo grau com as mãos: um recurso tátil para a educação inclusiva Abstract: This study aims to develop, analyze, and validate a tactile didactic tool for teaching the factorization of second-degree polynomials to students with visual impairments. The choice of theme stems from the identified scarcity of algebra-focused materials within Inclusive Education contexts, as observed by the author during his teaching internship. This experimental research involved the modeling and 3D printing of three versions of a manipulable artifact, following an iterative process of creation, internal testing, and validation with visually impaired participants. The analyses were based on the SAI model (Instrumental Activity Situations), highlighting the interactions between subject, object, and instrument throughout the process of instrumental genesis. The results showed that the material supports understanding of factorization through the spatial organization of the pieces and has potential to assist in solving quadratic equations. However, it has limitations, such as its restriction to polynomials with integer and factorable coefficients. It is concluded that the tool represents an accessible and promising alternative for teaching algebra in inclusive educational settings. 2025-05-15T00:00:00Z https://repositorio.ufu.br/handle/123456789/47570 Title: Um estudo sobre a otimização no beneficiamento de grãos Abstract: The main objective of this work is to study the optimization of seed processing through linear programming. Throughout its development, concepts, definitions, and solution methods are studied. The optimization aims to increase production efficiency, reduce costs, and improve agricultural productivity, considering the relevance of the agricultural sector in Brazil. The study is divided into several stages, including a review of linear programming and the SIMPLEX method, an explanation of the grain processing process—which involves reception, pre-cleaning, drying, classification, and storage—and the presentation of a mathematical modeling proposal to optimize the costs of this process. The model was implemented in MATLAB and applied to a real scenario using data from a processing plant in S˜ao Paulo. The goal was to calculate the lowest-cost solution within a 30-day planning horizon, considering the processing capacity and storage limits. The results of the study demonstrated that linear programming can be effective in cost optimization in the agricultural sector, providing an optimized solution for minimizing grain production costs. 2024-10-30T00:00:00Z