343 resultados para Ensino da Física e da Química
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O atletismo pode ser considerado como um “esporte de base”, já que está relacionado aos movimentos de correr, marchar, lançar, arremessar e saltar. Mas, logo percebemos que, apesar da importância do atletismo, não tivemos aulas dessa modalidade esportiva na escola. Por ser uma prova do atletismo, o arremesso do peso, também é pouco conhecido, cabendo aos professores de Educação Física se aprimorarem, buscando conhecimentos na área, a fim de poder ensiná-lo na escola. Para auxiliá-los, procuramos resgatar a história do arremesso do peso, identificando as principais modificações que ocorreram nessa prova desde sua origem até os dias atuais. Após intensa pesquisa bibliográfica, reunimos, nesse trabalho, dados referentes à origem da prova, resultados de competições internacionais, história nos Jogos Olímpicos, técnicas do arremesso do peso etc, a fim de subsidiar seu ensino na escola, onde deveria ser trabalhada como parte do conteúdo do atletismo desenvolvido nas aulas de Educação Física. Pautando-nos nas dimensões dos conteúdos: conceitual, procedimental e atitudinal, procuramos, ainda, evidenciar diferentes possibilidades de ensino do arremesso do peso voltado à formação do aluno, em especial, no que se refere ao que ele “deve saber”, ao que ele “deve fazer” e às atitudes que ele “deve tomar” diante às situações por ele vivenciadas ao longo da vida
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Os Parâmetros Curriculares Nacionais (PCNs), indicam que o ensino de ciências deve contribuir com eficiência para o desenvolvimento de uma sociedade mais esclarecida, que consiga compreender os avanços científicos e tecnológicos do mundo. Com isso, o ensino das ciências naturais pode ser articulado, apresentando-se de forma interdisciplinar, pois abrange aspectos da Física, Química, Biologia, incluindo Ciências Sociais e Tecnológicas. Focado nessa proposta, esse trabalho tem como finalidade disponibilizar ao professor de Ensino Fundamental aulas experimentais e práticas para serem utilizadas nas escolas. Consiste em uma lista de experimentos, entre outras práticas, organizados segundo os Eixos Temáticos previstos no PCNs. As práticas selecionadas se apropriam de materiais simples, de fácil obtenção e custo reduzido, podem ser realizadas tanto em ambiente laboratorial como em sala de aula, viabilizando sua utilização. Todos os experimentos foram extraídos de diferentes fontes de pesquisa: livros didáticos, apostilas didáticas e da Rede Internacional de Telecomunicação (Internet). Espera-se com esse material que o professor encontre um suporte para auxilio em aulas práticas, que proporcione ao aluno, atividades dinâmicas, facilitando a interação do educando com o conhecimento, atingindo o principal objetivo, a aprendizagem
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Dissatisfaction with certain aspects of the educational processes of the traditional teaching has always existed, and new teaching methods have been routinely studied. The experimental investigative activity is one of those alternative practices. In this type of activity the experimentation is inserted with an investigative approach, in which the student must build the concept, with proposals that represent solutions to the excited problems. In the teaching of chemistry, specifically, the need and importance of experimentation is evident, beyond motivate students, aid in the understanding of chemical concepts relating them to reality. Realizing the contributions of this methodology for teaching and learning, through this research was conducted to understand the difficulties encountered by teachers for planning and implementation of these activities in the teaching of chemistry and therefore the reasons for the dominance of traditional teaching method. The subjects were undergraduate students of chemistry course that developed and implemented differentiated learning activities for teaching and teachers who accompanied the high school students who participated in the university extension project Inclusion Science and University students and teachers from public: Teaching and Learning Chemistry focuses on research and practice”. Through the data it was possible to identify some factors that affect and hinder the implementation of experimental activities in general, not only the investigative. However, despite the difficulties experienced by undergraduates, the majority considered the activity as an alternative teaching method interesting and innovative, able to produce interest, motivation and participation of students with subsequent learning. As well as the teachers, what with all the difficulties that they had declared facing when applying experimental activities, they admitted the pedagogical... (Complete abstract click electronic access belo)
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This research project aims to determine the main way that the inclusion of topics of history and philosophy of science education activities aimed at high school, influence the process of teaching and learning of chemistry. The subject of research will be a teacher, undergraduate student in chemistry and public school students that the teaching units developed will be applied. The literature presents a large of research indicating the need to include these topics in education and present the results of large withdrawals of original sources of the development of scientific knowledge. Despite of the large number of these works are not very common reports of application of the results of these studies on activities of the classroom, which reinforces the importance of this study
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This study sought to raise the water issue is addressed in the teaching of chemistry in public schools through the notebooks Curricular Proposal of the State of Sao Paulo. First we tried to do a survey of knowledge related to construction of the concept of historical perspective, the physical and chemical properties, their importance to man and the particulars of the national curriculum for this subject. The methodology used was qualitative, descriptive and documentary. We analyzed the books for the first, second and third marking periods and the three series (the 4th book had not yet been distributed). As expected the first scenario, the proposed curriculum addresses the topic in greater depth in only one of the notebooks of the second year of high school. The approaches are no longer linked to health issues and the environment, cross-cutting issues considered by the NCP and important for students to make associations between the chemical content and their daily lives. We conclude that the contract should be evaluated by teachers and that their use should be involved in drawing up a plan that takes into account the aspects that seem incomplete. We also emphasize that although the proposal is interesting from the standpoint of teaching, teachers need training to its full use in the classroom
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Ainda que pouco conhecida, a história do lançamento do dardo revela ser esta uma prova muito antiga, existente desde os Jogos Olímpicos da Grécia Antiga. Com base nisso, o objetivo desta pesquisa consistiu em resgatar a história dessa prova do atletismo, observando seu desenvolvimento ao longo dos anos, sobretudo no que diz respeito às alterações em suas regras, em seus implementos, em seus resultados, entre outras coisas. Com base em livros, documentos, registros de competições e fotografias de diferentes épocas, essa pesquisa histórico-bibliográfica procurou coletar o maior número de dados que nos permitem compreender e analisar o desenvolvimento da prova do lançamento do dardo até os dias atuais. Entre outras coisas, os resultados evidenciam o surgimento do lançamento do dardo a partir da necessidade de sobrevivência do homem, sendo utilizado, sobretudo, em suas atividades de caça e guerra, no período da Pré-História. No período da Antiguidade Clássica, há registros que comprovam a utilização do dardo por infantarias e cavalarias, na Grécia Antiga, no Império Romano e pelos Lusitanos. Entretanto, além das guerras, o dardo era também utilizado nesse período em atividades esportivas. O lançamento do dardo era praticado de duas diferentes formas nessa época: o lançamento do dardo em um alvo prédeterminado (traçava-se um círculo com a distância desejada e o atleta deveria fazer o dardo cair dentro dele). Esse tipo de lançamento ocorria a partir de um ponto fixo que, muito provavelmente, era a linha de partida do estádio (stádion), chamada de “balbís” - e o lançamento do dardo em um alvo predeterminado (que acontecia geralmente em cima do cavalo, e o cavaleiro deveria... (Resumo completo, clicar acesso eletrônico abaixo)
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Modern society is characterized by being in evolution finds, technology strides and every day becomes the setting in which we live. At school, however, we found no features of these changes, the years pass and the methodological tools remain unchanged. In this paper we analyze an object produced by the Learning Network Interactive Virtual Education - RIVED to discuss whether it covers the content and answers to the questions proposed by the National Curricular and Curricular Proposal of the State of Sao Paulo, and may be inserted in the educational environment, both to perform a qualitative analysis, focusing on information retrieval. The results showed that the Learning Objects: Abundance, has most of the proposals relating to the subject of study, prepared by the NCP and the Proposed Structure for the State of Sao Paulo, so it is valid for teachers to use this tool trying that with a new approach, we can give students a better understanding of chemical concepts
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Cerca de um terço do total de doenças em adultos estão associadas a condições ou comportamentos que começaram na juventude. No Brasil, a porcentagem de Inatividade Física (IF) nos adolescentes varia entre 29% a 94%, que é um dado alarmante, pois esses adolescentes provavelmente serão adultos inativos fisicamente e com um risco maior de adquirirem uma doença de agravo não transmissível. Desse modo, o objetivo do estudo foi verificar a prevalência e os fatores associados à IF em escolares do Ensino Médio do município de Rio Claro- SP. Estudo do tipo transversal, de base populacional, realizado no primeiro semestre letivo de 2009 contou com a participação de 467 alunos (213 homens e 254 mulheres) das escolas particulares e estaduais do Ensino Médio do município de Rio Claro-SP. Para avaliar o de nível de Atividade Física (AF) dos adolescentes foi utilizado o Physical Activity Questionnarie-Children (PAQ-C). Foi aferido a circunferência de abdômen e calculado o Índice de Massa Corpórea (IMC). Os pais responderam um questionário para avaliar o nível de AF através do International Physical Activity Questionnarie (IPAQ) e o nível socioeconômico. Para verificar a associação entre as variáveis (sexo, nível socioeconômico, IMC e circunferência de abdômen) com o nível de AF dos adolescentes foi realizado a Regressão Logística e para verificar a associação entre o nível de AF dos adolescentes e dos pais foi realizado o Teste Qui-Quadrado. A prevalência de IF dos adolescentes foi de aproximadamente 83% e, dentre as variáveis analisadas, apenas sexo mostrou-se significante (p=0,00), sendo o sexo feminino com maior chance de IF.
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Currently with the growing technological advancement and global, new areas are being devastated, and as a result, the erosion became more frequent causing loss of soil, infiltration capacity of the surface and weathering of rocks. In this way, environmental studies are increasingly frequent to understand the environment in which we live, but also to avoid any degradation of the same and of finite natural resources, which are essential for human life. From this, this work has as main goal, analyzing the rates of chemical and mechanical erosive watershed of Ribeirão Jacutinga, at its mouth, in the city of Rio Claro, supporting environmental studies and sustainable development today. Order to reach these values were measured and total dissolved solids in suspension in the stream during the months from January to July 2012. As results included higher rates of both physical and chemical weathering in the rainy months, especially january
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This study shows new alternatives to the teaching of chemistry in high school and wants to be an aid to the teacher at the time of the planning of lessons and a way to help students improve their performance in this discipline. The central issue is the exploration of differentiated teaching strategies for a just end: improvement of education in chemistry. To reach the main point is to undertake a survey of the most important issues for students and teachers, and from there many teaching strategies are suggested to help in understanding the contents studied. The idea is to propose strategies that may be of interest to students of chemistry, stimulating the curiosity of wanting to know more about a certain content that is being studied in the classroom. This study shows that chemistry is not boring, is not as difficult as it seems, and everyone can indeed take pleasure in studying a world as real and so fascinating, if you understand the facts
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Contemporary society is going through a cultural revolution evidenced by the area of information technology, and this has led to a transformation in social relations and in the classroom. trying to adjust to these changes and also to curricular high school, the teacher can use as teaching materials, some visual aids: the videos. for this he can use the youtube site to select this educational material. however, given the vast amount of videos available on the site requires a careful selection of them. this work of completion then you want to make a qualitative analysis about the videos available free on the youtube site
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This work presents results of art state that searched articles to bring in its wake the relationship between Teaching of Chemistry (TC), Environmental Education (EE) and the Teaching of Chemistry directed from the Science Technology and Society (STS) standpoint. The research was carried by articles surveying in major magazines Brazilian Environmental Education and a reference in the research magazine of Science Education, being performed a qualitative analysis of those items that were identified. It was noted that little is produced on the subject of interest within this field, in mid-1998 to June 2012. In the articles analyzed did not find a perspective that allied relationship STS and EE, or EE, STS and TC. Nine articles were found in relation EE and TC, and TC and three articles STS, constituting two thematic axes: Relationship between Environmental Education and the Teaching of Chemistry and Relationship between Science and Technology Society and Chemistry Teaching, The discussion was given from the contents that comprised the categories created. The first axis involved: a) Teacher of Chemistry and EA b) Contents of Chemistry and EE, and c) Concepts and practices of EE Chemistry teachers. The second axis of the categories are: a) formative processes and conceptions of chemistry teachers in STS: b) Analysis of TC practice focusing STS. There were works produced by the same authors, who mostly used the same theme in different magazines for publication only changing the perspective of analyzing the results. Finally, a scenario indicates that restricted thematic research and the need to advance with future work
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No ano de 2008, a Secretaria do Estado de São Paulo propôs para todas as escolas estaduais o uso do material didático para todas as disciplinas, inclusive para a educação física, com proposta de atividade para o Ensino Fundamental e o Ensino Médio. Nas aulas de educação física encontram-se professores rola bola, que oferecem a bola aos alunos e não se preocupam com qualquer tipo de intervenção. Também, encontrams-se professores que procuram ampliar os conhecimentos dos alunos, aprofundando os conteúdos de educação física. Com base nisso, o objetivo deste trabalho foi avaliar o impacto do material didático na opinião dos professores do 8º ano do Ensino Fundamental. Para tanto, foram realizadas entrevistas com cinco professores, que utilizam o material didático proposto pela Secretaria do Estado de São Paulo. Após a análise dos dados, verificou-se que os professores apresentam a mesma opinião no que diz respeito ao que se deve mudar no material didático; dois professores acreditam que é possível aplicar o material na íntegra. Alguns professores afirmaram que às vezes é necessária a ajuda dos alunos na realização de algumas atividades. Outros concordam que o material chega quase sempre atrasado e isso prejudica o planejamento, atrasando o desenvolvimento dos conteúdos.
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This study evaluated the effect of physical and chemical activation on the speed of penetration of hydrogen peroxide bleaching agents present in different concentrations through the enamel and dentin. One hundred and twenty bovine incisors were used, which were obtained enamel/dentin discs of the buccal surface, with 6 mm in diameter. The samples were divided into six groups: G1 - Hydrogen Peroxide Gel 20%, G2 - Hydrogen Peroxide Gel 20% with light activation, G3 - Hydrogen Peroxide Gel 20% with Manganese Gluconate; G4 - Hydrogen Peroxide Gel 35%; G5 - Hydrogen Peroxide Gel 35% with the light activation and G6 - Hydrogen Peroxide Gel 35% with Manganese Gluconate. The specimens were placed in a transparent support on which there was a substance sensitive to hydrogen peroxide immediately below and in contact with the specimen. After the procedures for applying the gel for each group, one video camera was positioned and operated to monitor the time of penetration of peroxide in each specimen. The recording ended after changing the color of the fluid revealed in all specimens and times were noted for comparison. ANOVA analysis showed that concentration and type of activation of bleaching gel significantly influenced the diffusion time of hydrogen peroxide (P 0.05). 35% hydrogen peroxide showed the lowest diffusion times compared to the groups with 20% hydrogen peroxide gel. The light activation of hydrogen peroxide decrease significantly the diffusion time compared to chemical activation. The highest diffusion time was obtained with 20% hydrogen peroxide chemically activated. The diffusion time of hydrogen peroxide was dependent on activation and concentration of hydrogen peroxide. The higher concentration of hydrogen peroxide diffused through dental tissues more quickly