964 resultados para Natureza da ciência


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En el campo de la Educación en Ciencias, los estudios acerca de las concepciones de profesores sobre la naturaleza de la ciencia están en crecimiento en las últimas décadas en virtud de la importancia atribuida al saber sobre las ciencias. Manifestando preocupación con la temática, los trabajos de esta línea de pesquisa están investigando concepciones de profesores en formación como también los en ejercicio. Inserido en esa problemática, y preocupado con la formación inicial de profesores, este trabajo tuvo como objetivo principal investigar las concepciones de los alumnos de la Carrera de Pedagogía de UFRN (Universidad Federal de Rio Grande do Norte) acerca de la naturaleza de la ciencia, una vez que los alumnos son, o lo serán, profesores que darán clases de ciencia. El aporte teórico del estudio fue el abordaje ofrecido por la filosofía de la ciencia contemporánea, como también trabajos de literatura especializada sobre la temática NdC (Naturaleza de la Ciencia). En la parte empírica del trabajo utilizamos, como principal instrumento de colecta de datos, un cuestionario abierto, en el cual los alumnos marcaron posiciones sobre varios aspectos de la naturaleza de la ciencia. Fueron sujetos de la investigación 81 alumnos de Pedagogía, que estaban en el primer, quinto y noveno semestres (también dichos períodos ). Los resultados presentaron un acercamiento a las concepciones de los sujetos sobre la temática, indicando la presencia de una serie de concepciones poco satisfactorias de la ciencia, al lado de concepciones más consistentes con la epistemología contemporánea. En el comparativo entre los grupos, el quinto semestre presentó resultados un poco mejores que los demás, trayendo a la superficie elementos para evaluar el impacto de la formación en la construcción de las concepciones de ciencia por los alumnos

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In last decades, the importance of including the contents of the Nature of Science (NOS) in Science Education has been emphasized. Several studies have focused on investigating the conceptions of NOS, supported by students and teachers, as well as design, implement and evaluate proposals that aim to provide a reflection on this theme in the educational context. Considering the complexity of such content, studies indicate the need for explicit and contextualized approaches and the History of Science (HS) is one of the possible paths to this inclusion. We started from the premise that, through a historical study, that aims to discuss the meaning and the basis of our "beliefs", we can know the process of building on what we "believe" and better understand its meaning. This thesis is part of this perspective, proposing to explore the History of the Vacuum, a themed high didactic potential still little used, in order to collaborate with the teaching content of NOS. We present actions on different fronts that originated three products in the context of this research. On the first front, we insert the research and production of instructional materials (three historical texts) to subsidize people interested in the implementation of HPS for educational context through this material. The relevance of this front is justified by the existence of gaps with regard to the production of such material for the context of teacher training. However, we consider that the preparation of instructional material of good quality and accessible does not guarantee that these resources will be used, if they will not be accompanied by discussions in teacher training, on how to use them, contexts and obstacles to be faced. The second part presented refers to the organization and implementation of a workshop for undergraduate students in physics and physics teachers, considering the instrumentalization of these individuals to the preparation and use of teaching strategies to approach aspects of NOS through episodes of History of the Vacuum, as well as the preparation of the text orientation for people interested in implementing the instructional material for secondary education. This guidance text contemplates the difficulties anticipated by the literature of the area and the main challenges faced by the participants about the didactic transposition of HPS for the educational context they were noted during the workshop. The relevance of this second front, in particular, is justified by the existence of gaps with regard to the inclusion of the theme of NOS and the HPS teacher training

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Apresentam-se os resultados de uma pesquisa sobre a construção de conceitos de Física Moderna e sobre a natureza da Ciência com o apoio da hipermídia, que envolveu a produção e avaliação de um software educacional. A proposta didática fundamentou-se na Teoria da Aprendizagem de Ausubel, em orientações para a implementação de sistemas hipermídia educacionais e em abordagens derivadas da pesquisa em Ensino de Ciências, dentre as quais o enfoque Ciência-Tecnologia-Sociedade, ponderações quanto à importância pedagógica da História e Filosofia da Ciência e considerações sobre a inserção de Física Moderna no Ensino Médio. O programa foi avaliado por pesquisadores de Ensino de Física e licenciandos de Física e, após a incorporação de algumas sugestões realizadas, foi testado por estudantes do terceiro ano do Ensino Médio de uma escola pública. Obtiveram-se indícios de que o uso do computador foi fator de motivação dos estudantes; a diversidade de elementos de mídia auxiliou-os a fixar a atenção sobre o conteúdo e favoreceu a visualização e interpretação dos fenômenos, facilitando ainda o raciocínio; o hipertexto estruturado em conformidade com princípios ausubelianos contribuiu para a percepção da relação entre os conceitos e ajudou no desenvolvimento de subsunçores para apoiar a aprendizagem subseqüente. Constatou-se que a proposta didática avaliada favoreceu a evolução das concepções da maior parte dos estudantes quanto ao conceito de equivalência massa-energia e suas implicações; às relações entre Ciência, Tecnologia e Sociedade, incluindo aspectos ambientais e políticos; ao papel da Ética no desenvolvimento e aplicação dos conhecimentos científicos; ao progresso da Ciência ao longo do tempo.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Apresenta os resultados de uma investigação que explorou as percepções de alunos de Ensino Médio de uma escola pública de um município do interior paulista quanto à natureza da ciência. A partir desse diagnóstico, que revelou distorções, foi elaborado um minicurso que tem como base a história da atomística, a partir da qual se faz emergir as concepções da História e Filosofia da Ciência. O minicurso explora, ainda, uma abordagem situações envolvendo questões éticas na ciência. Pretende-se, a partir desse minicurso, fornecer contribuições que favoreçam a clarificação das distorções, estimulando o pensamento crítico para questões pertinentes a temas envolvendo as relações entre ciência, tecnologia, sociedade e ambiente.

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O objetivo deste estudo é apresentar e discutir aspectos da formação de professores para o ensino de ciências nos anos iniciais da escolarização, focalizando abordagens que podem ser contempladas nos processos formativos para uma adequada compreensão da natureza da ciência. Desenvolvemos um estudo teórico, a partir da literatura científica, apresentando e discutindo algumas propostas: trabalhar a história e filosofia da ciência; inserir práticas diversificadas como a experimentação em uma abordagem investigativa; explorar a relação CTSA; usar diferentes fontes para estudo, preparação das aulas e seleção de atividades. Entendemos que trabalhar nesse sentido pode contribuir para a valorização da área de Ciências por parte dos professores em formação e para o enriquecimento da prática educativa com as crianças.

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This study inserts itself in the research line conceptions on the nature of the science (CNC) in the school atmosphere. More specifically, on that teacher of natural sciences who claims not to be interested in philosophy, it is usually noticed a tendency to understand and to teach a vision of a ready/ finished and unalterable science, which directly influences the students conception of science. Discussed here is the application of a didactic rational reconstruction in high school, the results of which are compatible with a more epistemologically acceptable educational concep tion on the nature of science as something provisory, variable and controversial.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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During the last decades the area of science education has discussed issues related to the inclusion of the History and Philosophy of Science (HFS) in the practice of science teaching. Among the arguments put forward in favour of this approach, it is pointed out the possible enhancement of scientific content learning and the understanding of the nature of Science (NoS). In spite of such considerations, we still have a very small number of research papers reporting results of practical interventions that utilize the historical approach, moreover, there is a lack of teaching materials in this perspective. Our work has sought to contribute to this area with regard to two aspects: on the one hand, with the production of didactic material, by drawing up texts on the history of inertia for graduate students. On the other hand, we investigate whether the arguments mentioned above in relation to the didactic use of HFS sustain themselves, in a particular context. We developed and applied a didactic sequence, using the texts that we built, to teach the concept of inertia and discuss selected contents of NoS. The didactic sequence was applied in two graduate classes, one from a course of Geophysics (BSc.) and another from the Physics (teaching formation), both from the Federal University of Rio Grande do Norte (UFRN). An initial survey exposed that students, even having approached the concept of inertia in basic education, presented conceptions of common sense regarding the relationship between force and motion. The questionnaire also allowed us to identify the existence of elements of concepts considered inadequate as regards to NoS. At the end of our research, our data indicated a greater number of positive hits on the issues concerning the concept of inertia. Regarding the aspects of NoS, we were able to identify, in a few cases, a move towards a more appropriate understanding, however, certain distortions persisted, highlighting the limitations of the approach used

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Tese de doutoramento, Educação (Didática das Ciências), Universidade de Lisboa, Instituto de Educação, 2015

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Trata dos pressupostos relativos à natureza da ciência e da tecnologia, caracterizando-os e mostrando a sua importância na elaboração, implementação e avaliação de ações em ciência e tecnologia. Aponta efeitos do desenvolvimento científico e tecnológico no processo de modernização da sociedade. Aborda o processo de criação e implantação da Rede UNESP de Difusão da Ciência e da Tecnologia tecendo considerações sobre os pressupostos que orientaram tal processo e seus resultados. Aponta a necessidade de uma reflexão critica sobre esses pressupostos como etapa fundamental para que essas ações tenham um maior alcance social.

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Most knowledge and techniques developed by mankind since ancient times had the main purpose to study and understand the various phenomena of Nature. Science, like one of these narratives, works as a translation, transcribing what, is systematically observed. Within the set of transformations on the modern sciences, the dialogue with related areas became quite narrow and, occasionally, functional, and the dialogue with non-related areas, in turn, does not takes place by any matters. The focus of this research is the teaching of Biological Sciences, and the undergraduate courses as strategic places to disseminate a broad understanding of Nature, that broadens the conceptual relations between different disciplinary axes, previously fragmented. In order to do so, I take a four-way metaphorical approach as a methodological construction base. Three of them proposed by Joël de Rosnay, represented by artifacts: The Telescope, The Microscope and the Macroscope. And finally, a proposition that complements the approach, that i named The Naked Eye. In Telescope, which allows a more general construct of a phenomenon, I discuss the teaching of Biological Sciences in Brazil. In the microscope, which allows us to analyze in detail a scenario, I construct a rank of the major courses in biological sciences and propose a discussion on the understanding of nature on the undergraduate programs. In Macroscope, who allows, at the same time, zoom in and out to the phenomenon observed, I call for a transdisciplinary dialogue, based on the authors Ilya Prigogine, Basarab Nicolescu, Henri Atlan and Bruno Latour, which can certainly contribute to the curriculum of the Biologists training programs, that builds knowledge pertinent to a complex observation of Nature. I complete the set of the quaternary reading and understanding of the world from the Naked Eye, as the first strategy of perception in our species. For this, I invite the philosopher of Nature Chico Lucas da Silva as my interlocutor

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Researches in the field of Science Teaching have shown, in recent decades, that students from high school level have difficulties in understanding basic concepts of science, in general, and physics, in particular. The specific literature indicates, as a priority for a scientific education of better quality, a more structured understanding about science. This work proposes the introduction of elements of History and Philosophy of Science in high school as an aid to learning the concepts of optics, in general, and of aspects concerning the nature of science, specifically. Making use of historical episodes regarding the controversy on the nature of light, especially during the seventeenth and eighteenth centuries, as well as clippings of the history of optics in relation to the development of models that explain the process of vision, we formulated a teaching unit and implemented it on two night high school classes of a public school in the city of Parnamirim (RN). The unit involved, primarily, the reading of three historical texts containing written questions followed by a collective debate ("moot"). The results indicated some difficulties in overcoming the misconceptions related to the process of vision and the nature of light. Nevertheless, we believe that the teaching unit has succeeded in relation to the learning of most students, both in relation to a better understanding of science as well as concepts of optics

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From a critique of aspects of the current teaching of physics, we propose in this paper an investigation into the conceptions of Nature of Science (NOS) submitted by students from the high school level, as well as the inclusion of discussions about some elements of NOS, through the History and Philosophy of Science, understanding them as facilitating strategy for more effective learning of Physics and, more specifically, the contents of optics. Based on the historical period corresponding to Greek antiquity to the mid-nineteenth century, built and applied a teaching unit to a high school class at the Federal Institute of Education, Science and Technology of Rio Grande do Norte (IFRN) Ipanguaçu campus. Our teaching unit involved the reading and interpretation of texts with historical content, observation and assembling five experimental activities, among other activities. Data analysis occurred through questionnaires investigative applied before and after the completion of the teaching unit, as well as questionnaires for content present in the texts. Although not significant, the results indicated that the application of the teaching unit allowed the (re) construction of some conceptions about NOS targets students present in our work, and contribute to a better learning content and greater optical science approach and its nature