Uma proposta didática sobre metabolismo no exercício físico

Abstract

This research aimed to develop and evaluate a Potentially Significant Teaching Unit (PSTU) with the theme Metabolism in physical exercise applied to third year high school students at a State School in the city of Dom Pedrito in Rio Grande do Sul. The specific objectives consisted of: 1. elaborating and developing a PSTU with the theme Metabolism in physical exercise; 2. Evaluate students' learning considering as indicators the mastery of scientific concepts and the development of superior cognitive skills, as well as evidence of the occurrence of meaningful learning; 3. develop theoretical-practical material that will allow exploring metabolism in physical exercise with an interdisciplinary approach and based on the PSTU methodology. The research question that guided the theoretical-methodological options of this research was: to what extent did the proposed PSTU contribute to promote significant student learning about metabolism?. The theme Metabolism in Physical Exercise was explored from the concepts: free radicals, antioxidants and oxidative stress interconnecting to physical exercise. The production of data relied on several instruments: student profile; assessment of the learning of scientific concepts and the development of low- and high-order cognitive skills in summative assessment, in addition to formative assessment. In the summative evaluation, the students' answers at the beginning and at the end of the PSTU in the low-order cognitive questionnaire were compared, in addition to their results in the high order cognitive questionnaire (applied only at the end of the didactic intervention). For the training, the portfolios of the students were evaluated, in addition to the observations made by the researcher in the logbook. These data were analyzed from a qualitative approach through content analysis and evaluative rubrics. Data collection was carried out in 2021 during the Covid-19 pandemic, so remote teaching was chosen2 . 29 students participated in this research. The results obtained showed the effectiveness of PSTU on Metabolism in physical exercise and evidence of the occurrence of significant learning from the performance of students in summative and formative assessments. In addition, it is noteworthy that the PSTU methodology proposed in this work considered real situations and students' interest, as well as the proposition and resolution of situations and/or problems that mobilize the students' intellectual potential. As a product of this research, a theoretical-practical material was made available digitally on the page of the professional master's degree in Science Teaching to teachers and the school community in general that will allow exploring metabolism in physical exercise with an interdisciplinary approach and based on the PSTU methodology