Navegando por Assunto "Astronomia"

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Acesso aberto (Open Access)
A construção de conceitos relacionados com os movimentos Terra-Lua-Sol por alunos da E.J.A. à luz da teoria histórico-cultural
(Universidade Federal do Pará, 2007-07-16) VALENTE, José Alexandre da Silva; ALVES, José Moysés; http://lattes.cnpq.br/6500775506186127; RÉGIS, Cícero Roberto Teixeira
Constructing scientific scholar concepts still needs to be better understood. Focusing on Astronomy concepts, researches are still scarce in Brazil, especially those related to Education for Young and Adult Learners (Educação de Jovens e Adultos EJA). This paper goal was to comprehend, through the historic and cultural theory, EJA students construction of concepts related to movements of the Earth-Moon-Sun system, in their interactions with the teacher and schoolmates in the classroom. The research was conducted in an EJA Ensino Médio class at the Application School Federal University of Pará. The class had 19 students, from 16 to 37 years old. The data collection took place during the term semester, beginning with questionnaires. They had open questions about the theme in order to investigate the students previous conceptions. After that, the thematic classes were audio and video recorded. During the classes the students gave explanations for the day-night succession on Earth, individually or in groups spontaneously formed by the students, and then they were reorganized by their teacher. The registers were transcribed and analyzed in a micro-genetic way. The students answers to the initial question about the day-night succession on Earth were categorized in four levels A, B, C and D, from the farthest and the closest scientifically accepted scholar concept. The achieved results showed 13 students made the conceptual profile better, because they migrated from the A, B or C levels to the D one in the answers category, that is, these students understood that the day-night succession was a result of the Earth rotation movement. The other 6 students, already at the level D, kept in that level, although they improved their explanation if we compare their first and last answers. Three students were selected in order to analyze their micro-genetic knowledge construction process. They had their initial written answers classified in A or B levels, and during the interactions with their teacher and the other students, they achieved the scientific discourse elements, giving theoretical explanations to the observed phenomenon. The results show different adjustment mechanisms of Educational help offered by the teacher and the students, they show the importance of a dialogist approach and a work with different group formats in the classroom.
Acesso aberto (Open Access)
Abordagem CTS no ensino de astronomia: formação de professores mediada pela situação problema “Centro de Lançamento de Alcântra”
(Universidade Federal do Pará, 2015-01-20) SANTANA, Elisangela Barreto; FREITAS, Nádia Magalhães da Silva; http://lattes.cnpq.br/2982253212145468
This work is a result of focused research to understand the contribution and seize the possibilities and restrictions of the Science, Technology and Society (STS) approach, mediated by a situation – problem in continuing education teachers, in order to provide a reflective, critical and independent of science teachers in specific in Astronomy Education. The theoretical constructions around the teacher training are guided in the arguments of reflective teacher, but this very intentional reflective practice from the perspective of reflection to action. The weaknesses and astronomy education challenges are presented in the theoretical frameworks and the construction of a new reference in this context was given by the discussions and buildings around the case "Alcântara Launch Center". The environment that composed this research was a continuing education course, aimed at science teachers in the context of an action research as part of a qualitative research. The study gathered seven professors of federal network, state and municipal school, which through an investigative action, in inverted symmetry format, appropriated the theoretical and practical frameworks of STS teaching approach. The analysis methodology, my choice was the discursive textual analysis by understanding it as a facilitator of the process to seek, express and construct meaning the investigated field. In this respect, I realized the relevance of excerpts related to the constructions of knowledge and training buildings, which led me to organize and present the results in two sections, namely: (1) citizen Education: articulating CTS and scientific knowledge on astronomy: this section includes buildings necessary for the appropriation of scientific knowledge related to the issue and problem Alcantara, (2) Reflective training for professional intentional action: in which converged the prospects of reflex actions in the sense of reflection for action, converging different perspectives of the subjects around personal and professional values, necessary for conscious and intentional professional action. The work showed me the practical value of the STS approach and the possibility of Astronomy teaching be presented in context, and reflective practice. As for teachers, provided the construction of a new framework and the possibility of a differentiated pedagogical practice, focused on civic education.