A quantidade de milho influencia na proliferação de gorgulho? aspectos teóricos que subsidiam o processo de construção de dados de uma investigação

The investigative practice as science teaching activity is recognized as an alternative to the learning improvement of science, becoming a perspective of work for teachers. This article arose from a study about the teachers formation process in the scope of investigative practices, conducted with trainee teachers of the Science Club of the Federal University of Pará - UFPA and students of basic education in public schools in Belém city, in order to discuss the theoretical-practical relationship in the planning of an investigative activity. In this process, some episodes indicate the necessity of such relationship, because in its absence the planning process shows itself to be questionable. Our analysis shows the importance of considering the theoretical context to conceive the planning and decisions regarding the conduction of the investigative practices, and oriented to a theoretical or practical goal.

Histórias em quadrinhos como recurso didático para o ensino do corpo humano em anos iniciais do Ensino Fundamental

Teaching resources involve different elements used to support the organization of teaching and learning. Among these are the comic books, involving visual aspects, both cognitive and creative, that provide an alternative way to complement the lectures. The aim of this study was to develop and evaluate a comic book entitled “Human Body”, focusing on the circulatory, digestive, nervous and respiratory systems, to provide an alternative resource for the teaching of the content in the initial years. The material was evaluated with students of the 5th year of elementary education at a public school in the state of São Paulo, through the use of questionnaires. The comic book proved to be valid as a complementary teaching resource for learning in students, enabling reflection on the relevance of the development and use of comics to science education in the initial years.

Memórias do ensino de ciências no Brasil: a constituição da área segundo pesquisadores brasileiros, origens e avanços da pós-graduação

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Interpretando la estrutura curricular de programas brasileños de licenciatura en Física, a partir de una perspectiva epistemológica de la Didáctica de la Física

This study aims to contribute to understanding the complexity related to the definition and practice of "Didactics of Physics" in initial physics teachers training. We intend to make evident how is understood the Didactics of Physics in curricular organizations, since an "observation" from a perspective based on an analysis of theoretical frameworks of Science Teaching, according to which "Didactics of Physics" is an articulating axis between different disciplines and constitutes the knowledge body to be taught in order to teachers learn to teach physics. For that, we used techniques of documentary analysis, constituting a text from a systematic search of information about Physics teachers’ initial education programs, looking for criteria justifying their organizations and contents of disciplines that aim to contribute to the training for teaching, in a study carried out during 2011. We found on these curricular organizations the presence of disciplines in fields such as: Exact Sciences, Humanities, Social Sciences and Teaching Practice, which indicates a consideration of interdisciplinary training which must receive the future teacher. However, without being consistent with Science Education' epistemology, requesting the integration of interdisciplinary knowledge to solve problems related to teach physics in high school, with some exceptions in the preparation for the subject "traineeship" or training for "Didactic transposition", but since different interpretations.

O tratamento de questões sociocientíficas na formação de futuros professores de ciências: possibilidades e desafios nas vozes dos licenciandos

The perspective STSE (Science-Technology-Society-Environment) was recently implemented in the training courses for science teachers in Brazil, and proposes greater coordination of scientific knowledge with subjective questions that constitute the science, enables discussion of the nature of science and its implications for social and environmental issues. The present work aims to contribute to training of science teachers that approximates the current demands of contemporary society. Having as theoretical reasons the implications of STSE Movement in science teaching, we bring some considerations on pedagogical practices of undergraduates in Biological Sciences held within its Supervised. Through content analysis of the speeches of undergraduates, we can identify contributions and limitations that treatment of socio-scientific issues (SSI) revealed in the process, putting to discuss some aspects that are tangent training teachers committed to a contextualized view of science and scientific training. It discusses, among them, the relationship theory and practice in supervised training of future teachers’ conceptions about the implications of the STSE perspective in science teaching and science teacher positioning ahead controversial themes.

Cursos de licenciatura na área de ciências: a temática inclusão escolar de alunos com necessidades educacionais especiais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A importância da experimentação no ensino de química e ciências

The profile of students has changed a lot, mainly due to the advent of new technologies, which in attractiveness has attracted the attention of students, and becoming a difficulty the teacher to attract the attention of the student to class. In this sense, it is needed reformulations in pedagogical practice so that the student's attention turns to science, arousing their curiosity. Thus, in Chemistry and Science Teaching, and lectures must encourage discussions about science, and one of the possible ways to insert dynamic classes is by inserting the trial. Thus, this present course conclusion work aims at presenting and discussing the ways in which Experimentation in Chemistry and Science Teaching has been applied in classrooms, the difficulties of its implementation as a teaching methodology, as well as the advantages and disadvantages of their use depending on the type of approach, training teachers, among other factors

Um processo para utilizar a tecnologia de impressão 3D na construção de instrumentos didáticos para o ensino de Ciências

Pós-graduação em Educação para a Ciência - FC

A presença de alunos autistas em salas regulares, a aprendizagem de ciências e a alfabetização científica: percepções de professores a partir de uma pesquisa fenomenológica

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O professor de biologia e a possibilidade de uso de diferentes abordagens de ensino com materiais midiáticos a fim de desenvolver a criticidade do aluno do ensino médio

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Pedagogical practices carried out during an in-service teachers education project: approaching history and philosophy of science to physics teaching

We report here part of a research project developed by the Science Education Research Group, titled: "Teachers’ Pedagogical Practices and formative processes in Science and Mathematics Education" which main goal is the development of coordinated research that can generate a set of subsidies for a reflection on the processes of teacher training in Sciences and Mathematics Education. One of the objectives was to develop continuing education activities with Physics teachers, using the History and Philosophy of Science as conductors of the discussions and focus of teaching experiences carried out by them in the classroom. From data collected through a survey among local Science, Physics, Chemistry, Biology and Mathematics teachers in Bauru, a São Paulo State city, we developed a continuing education proposal titled “The History and Philosophy of Science in the Physics teachers’ pedagogical practice”, lasting 40 hours of lessons. We followed the performance of five teachers who participated in activities during the 2008 first semester and were teaching Physics at High School level. They designed proposals for short courses, taking into consideration aspects of History and Philosophy of Science and students’ alternative conceptions. Short courses were applied in real classrooms situations and accompanied by reflection meetings. This is a qualitative research, and treatment of data collected was based on content analysis, according to Bardin [1].

Genotoxicity in primary human peripheral lymphocytes after exposure to radiopacifiers in vitro

Taking into consideration that DNA damage plays an important role in carcinogenesis, the purpose of this study was to evaluate whether some radiopacifiers widely used in clinical practice are able to induce genetic damage in primary human cells in vitro. Human peripheral lymphocytes obtained from 10 healthy volunteers were exposed to barium sulphate (BaSO(4)), zirconium oxide (ZnO(2)) and bismuth oxide (Bi(2)O(3)) at final concentrations ranging from 1 to 1000 mu g/mL for 1 h at 37 degrees C. The negative control group was treated with vehicle control (phosphate buffer solution) for 1 h at 37 degrees C and the positive control group was treated with hydrogen peroxide (at 100 mu M) for 5 min on ice. Results were analyzed by the Friedman non-parametric test. The results pointed all compounds tested out did not induce DNA breakage in human peripheral lymphocytes as depicted by the mean tail moment and tail intensity in all concentrations tested. In summary, our results indicate that exposure to these radiopacifiers may not be a factor that increases the level of DNA lesions in human peripheral lymphocytes as detected by single cell gel (comet) assay.

In vitro comparison of laser fluorescence performance with visual examination for detection of occlusal caries in permanent and primary molars

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Educação ambiental e educação em valores em livros didáticos de ciências naturais

Os valores têm sido considerados importante conteúdo de ensino, sobretudo ao tratarmos de certas temáticas, como a ambiental. Procurando analisar o tratamento dado à dimensão valorativa da temática ambiental em três coleções de Ciências Naturais voltadas às séries finais do Ensino Fundamental verificamos a predominância da visão antropocêntrica, sendo a natureza valorizada em função de sua utilidade para o ser humano. O predomínio da valorização do conhecimento científico em detrimento de outras formas de conhecimento, da ação humana individual em detrimento da coletiva e a simples apresentação de leis ambientais foram outros aspectos problemáticos encontrados. Uma das coleções, entretanto, além de valorizar o trabalho coletivo dos alunos, também se destacou pela maior ênfase dada à dimensão estética, implicando uma visão de mundo menos utilitarista e um tratamento mais adequado do conteúdo valorativo da temática ambiental.

Preliminary functional characterization, cloning and primary sequence of Fastuosain, a cysteine peptidase isolated from fruits of Bromelia fastuosa

The present work reports the characterization of Fastuosain, a novel cysteine protease of 25kDa, purified from the unripe fruits of Bromelia fastuosa, a wild South American Bromeliaceae. Proteolytic activity, measured using casein and synthetic substrates, was dependent on the presence of thiol reagents, having maximum activity at pH 7.0. The present work reports cDNA cloning of Fastuosain; cDNA was amplified by PCR using specific primers. The product was 1096pb long. Mature fastuosain has 217 residues, and with the proregion has a total length of 324 residues. Its primary sequence showed high homology with ananain(74%), stem bromelain (66%) and papain (44%).