973 resultados para Chemistry Teaching


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Nowadays, chemistry contents taught in high school continue to be presented in a fragmented and decontextualized manner by the teachers and the textbooks. Even though it is known that contextualization and interdisciplinary exchange play an important role in the process of Chemistry teaching/learning. Therefore, the present study aims at enlightening the importance of these methodological foundations in the learning of chemistry. The data acquisition about the subject Contextualization and Interdisciplinary Exchange involved in Chemistry Teaching was developed through bibliographical researches on chemistry textbooks, which focused on the analysis of the topics acid and base , since it is a theme studied throughout all three years of high school. The present study also developed questionnaires which were applied to analyze to what extent chemistry teachers are working in a contextualized and interdisciplinary manner throughout the process of Chemistry teaching/learning. The results obtained in the researches show that a contextualized and interdisciplinary teaching contributes to a more meaningful acquisition of chemistry knowledge, in a dynamic and interactive way, but there are still many roadblocks towards the achievement of this kind of Chemistry teaching/learning process

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The aiming of this work is linked to chemical education, focusing organic chemistry classes of Chemical Engineering, Pharmacy and Zootechny graduate courses of the Federal University of Rio Grande do Norte. For that, teaching-learning process related to basic chemical subjects which support the understanding of organic chemistry concepts was evaluated in a research period of two years. The education proposal linked to the theoretical content of the cited classes, pointed out the process of knowledge construction, in which educational commitment as well as dedication in the teaching-learning process was also valued. In that approach several didactic tools were applied, among them scientific articles were used as supplementary studies of the basic organic chemistry concepts and related. The acceptability of students, as well as their motivation, performance and learning process was justified by the data collection of the applied teaching methodology. The acceptability and commitment of the students facing this teaching interactive approach, which transversely contributed to the intellectual maturity growth of the students, as well their professional development, were evidenced by satisfactory obtained results that will be herein discussed

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The use of analogies in high school is often useful for chemistry teaching, either on textbooks or by teachers in the classroom.This use is justified by the large number of abstract concepts that rules this course. Analogies are conceptualized by several authors, which converge on the idea that these are tools that seek a way to elucidate an unknown concept by comparing it to a familiar one, relating their similar and dissimilar features. An analysis on a survey of analogies found in high school chemistry textbooks and chemical equilibrium studies is performed in order to verify whether they are leading to misconceptions for their use by students and/or for their use by teachers in the classroom, or whether they promote a learning facilitation

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The field of education is very rich and allows us to research in various aspects. The area of chemical education has been growing more and more, and an important aspect that has been researching this area is about the learning difficulties of students. The approach of the themes atomic structure and chemical bonds are developed in high school and have many problems that are often brought to higher education becoming an obstacle to the advancement of learning. It is necessary for these initial themes - the atomic structure and chemical bonds - are well understood by the student to the other contents of Chemistry will be understood more easily. This paper aims to describe, analyze errors and difficulties presented in the assessments of the discipline Atomic and Molecular Architecture, the students of the degree course in Chemistry - EAD, with respect to the contents of " Atomic Structure and Chemical Bonding ", by of the assessments made by the students and the Virtual Learning Environment (VLE), taking into account the activities , discussion forum and access to materials . AVA allows obtaining reports which were used to analyze regarding access / participation to assess their contribution to learning and its relation to the final result (pass / fail). It was observed that the most frequent errors in the assessments are related to the early part of the chemistry that is the understanding of atomic structure and evolution models. Students who accessed the extra material and participated in the activities and forums were students who achieved success in the course. Ie, the difficulties were emerging and the use of available teaching strategies, students could minimize such difficulties, making their performance in activities and assessments were better. Was also observed by attending the AVA, the discipline began with a large withdrawal from the page access as well as the frequency of face- evidence from observation in Listing presence of classroom assessments

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O presente artigo discute estratégias utilizadas em um processo de formação continuada que se destina a promover a inserção da informática nas aulas de Química, organizado com base na racionalidade prática e na reflexão crítica sobre o trabalho docente. Esse processo envolveu professores de escolas estaduais localizadas na região de Jaú (SP) e utilizou a educação a distância como recurso para mediar os períodos entre os encontros presenciais. As estratégias selecionadas para discussão neste artigo, dentre as utilizadas no processo de formação, são: a elaboração de material didático e o desenvolvimento de aulas nas Salas Ambiente de Informática das escolas. Tais propostas se revelaram importantes por considerarem o professor como autor dos recursos didáticos para trabalho em sala de aula, e o contexto escolar como subsídio à própria ação de formação.

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Neste artigo, apresentamos os resultados de uma pesquisa sobre as contribuições e as dificuldades da abordagem de questões sociocientíficas na prática de professores de ciências em serviço. Na pesquisa realizada, de caráter qualitativo com corte crítico, a realidade é entendida como uma construção social subjetiva e intersubjetiva, marcada por um contexto histórico. A constituição dos dados foi feita no decorrer de uma disciplina sobre ensino de ciências a partir de questões sociocientíficas, desenvolvida em um curso de mestrado em ensino de química, e teve a participação de 31 professores de ciências em serviço. No intuito de garantir a validade de fidedignidade da pesquisa, foi utilizada mais de uma fonte de dados. Assim, os dados foram constituídos por meio de vários instrumentos, tais como: questionário inicial de caracterização dos participantes da pesquisa, gravações de entrevistas focais e trabalhos apresentados pelos professores sobre a abordagem de questões sociocientíficas (QSCs) em sala de aula. As análises alcançadas indicam que a abordagem de questões sociocientíficas possui um potencial considerável para a prática do professor em termos da tomada de decisão e do desenvolvimento de pensamento crítico dos alunos. O trabalho com questões sociocientíficas também exige planejamento do ensino e ações bem sustentadas, assim como a participação ativa do professor. Finalmente, são caracterizadas as dificuldades do trabalho realizado em termos pedagógicos, formativos e curriculares.

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This paper proposes a didactic experience on the simulation of the atmospheric corrosion of copper and zinc due to the presence of sulfur and nitrogen oxides. Quantitative parameters of corrosion such as gain and loss of mass were determined to assess the variation of the layer thickness of the metal and of the corrosion products. This proposal aims a better understanding of some basic aspects of acid rain formation using fundamental concepts of chemistry such as the reactivity of gases.

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Pós-graduação em Educação - IBRC

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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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Pós-graduação em Educação para a Ciência - FC

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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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O objetivo deste trabalho foi o de investigar as concepções de Ciência e de Ensino de Ciências de alunos concluintes de Licenciatura Plena em Ciências com habilitação em Química, turma de concluintes do segundo semestre de 2004 na UFPA, contando com uma total de 12 sujeitos de pesquisa. Para a identificação das concepções de Ciência e de Ensino de Ciências, foi elaborado um questionário, previamente testado com 15 alunos concluintes do Curso de Licenciatura Plena em Biologia, objetivando a validação do instrumento de investigação e posterior reformulação. A versão final do questionário apresentou doze questões, cujas respostas possibilitaram a construção de quadros contendo as respostas dos sujeitos da pesquisa. A categorização das respostas foi feita a partir de uma aproximação ao pensamento epistemológico de Bacon, Comte e Popper. Esses autores e outros permitiram analisar as respostas dos sujeitos, e identificar concepções de ciência empírica-indutivista, positivista e racionalista crítica que revelaram as tendências de Ciência Experimental-indutiva, Ciência Tecnológica e Ciência processual e tendências de Ensino de Ciências como Transmissão-recepção, Conjunto de Atividades Manipuláveis e Ensino como construção.