Atividade experimental problematizada (AEP) e ensino de quimiometria: uso do aplicativo portátil REDGIM® no contexto educacional superior

• Autor(a) principal: Siqueira, Bruno Magela de Melo
• Data de Publicação: 2023
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/17269
• topic: Química; Experimentação; Imagem Digital; Planejamento Didático-Experimental; Inovação; subject.br-rjbn

This thesis addresses the theoretical-methodological strategy of Problematized Experimental Activity (PEA) in the teaching of Chemometrics, introducing innovative concepts in chemical analysis through digital images using the REDGIM® app in the context of Higher Education. Additionally, it explores the use of apps in predicting the concentration and pH of an ore dust suppressor resin as an alternative method with the use of portable technologies, in collaboration with the Doctoral Academic Innovation Scholarship - DAI (01/2019) and Vale Company. Despite the growing importance of Chemometrics in research and industry, its place in education is still limited. Universities have the responsibility to update future professionals, following the 2001 Curriculum Guidelines that emphasize a student-centered approach. Thus, PEA stands out as a theoretical-methodological strategy, combining experimentation and substantial learning, encouraging independent student research to solve complex problems and serving as a potential mediator for chemometric subjects. In terms of the methodology of this study, the approach is characterized as mixed, combining qualitative and quantitative procedures. Its applied nature aims to solve practical problems and offer tangible solutions. The research is descriptive, focusing on the interpretation of phenomena, and characterized as intervention research, as the researcher acts as a mediator, articulating the process and promoting interaction with the research subjects. The didactic and experimental planning developed was validated through applications over three years, both remotely and in-person, with undergraduate students in the Chemistry courses at the Federal University of Espírito Santo – Goiabeiras campus. Throughout these applications, data collection involved audio recordings, logbooks, photographic records, questionnaires, and assessment sheets based on cognitive performance indicators that analyze the competencies, skills, and intelligences developed and exercised by students. For the purpose of the technological innovation scholarship, apps were used to develop an alternative methodology for analyzing the ore dust suppressor resin. The results indicate that PEA demonstrated applicability in developing competencies and skills in students, such as collaboration, critical thinking, communication, creativity, and the ability to argue based on chemical knowledge. Content analysis of the final questionnaires, aided by the Iramuteq® software, highlighted how the use of an alternative app is interconnected with chemical knowledge and Chemistry education. Regarding the prediction of physicochemical properties of the resin, the proposed method yielded results close to those of established methods, demonstrating the potential use of apps in industrial analyses due to ease and low cost. In light of the foregoing, the combination of theoretical, experimental, and educational studies led to the conception of a plan for teaching Chemometrics and chemical analyses. This planning aimed to promote deep and meaningful learning, empowering students to deal with the complexities of the field and its applications in chemical analyses, preparing them solidly and updatedly for the challenges of the contemporary world.