884 resultados para Distance of education. Video lessons. Chemistry. Learning of difficulties


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

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Studies about Assistive Technology have emphasized the need to integrate resources, services and strategies for inclusion and special education to foster the learning process and skill development of students with disabilities. The literature describes that the first step towards implementing assistive technology in schools should enable professionals to understand the situation involving the student in order to expand his or her participation in the teaching and learning process. This study aimed to identify the need for assistive technology services, resources and strategies for students with cerebral palsy in school. Two children with cerebral palsy and their teachers were selected. The data collection phase included three successive procedures: interviews with teachers, completing the identification protocol of the school routine and participant observation conducted in the classroom using filming and field diary. Based on the material gained from these three procedures, data triangulation was proposed, i.e., grouping information in a single document in order to establish categories of analysis. After preparing the material, the categories were assessed by judges from the field of knowledge. The results showed that after understanding the situation of the disabled student within the school context, it was possible to establish his or her skills and needs to indicate the appropriate assistive technology resources for the teacher's planning and thus provide proper teaching and learning for the children with disabilities. The study identified the need to establish specific procedures, an organized pedagogical plan and participation of health professionals as consultants on using assistive technology in school.

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With the development of cognition studies and the awareness that teachers’ previous experiences, knowledge acquired in language teacher education programs and classroom experiences in different contexts shape the ways teachers think and construct their teaching practices, teacher education programs start to understand, from a sociocultural perspective, teachers’ learning as a dialogic process of knowledge co-construction, which is situated and emerges from practices and sociocultural contexts. Considering the relevance of this new perception, this article aims at presenting such theoretical perspective as well as its contributions to language teacher education research and teaching.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Recently, Bourdieu’s sociological tradition has emerged as an important trend in research in science education. This paper presents some critiques elaborated by Bernard Lahire towards Bourdieu’s sociological approach. The main purpose of our incursion into Lahire’s critique is to argue and introduce the methodology of sociological portraits as an important resource for research in science education. After describing this methodology, it is illustrated with a portrait of dropout on an undergraduate course in chemistry. Diogo’s portrait illustrates, at the empirical level, some basic features of individual dispositions (variability, genesis, transferability, dichotomy and contextuality). From this portrait, it was possible to illustrate how the resonance between students’ and institution’s dispositions helps explain their sense of membership and belonging to the course. Finally, we highlight some potentialities of sociological portraits to the purposes of sociological research in science education.

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The present study has as its main purpose the investigation of teachers'view concerning the teaching and learning of basketball in Physical Education classes in a school setting. The selected teachers who participated in this survey come from public and private institutions in the city of Volta Redonda, RJ, Brazil, teaching 6th-9th grade classes of elementary school. This was a quantitative and qualitative study with content analysis. Data collection included interviewing 60 teachers who provided their opinions on the issue investigated. Development of basketball was investigated not only as a content for the Physical Education classes, but also as a dimension that goes beyond school boundaries, where that sport plays an important role in society. Joint actions to provide the opportunity for basketball to grow as a content for Physical Education classes may represent a way to describe its implementation in all contexts, although the importance of this discipline in the school setting should not be disregarded in favor of obtaining results in sports competitions.

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Pós-graduação em Educação - FCT

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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We present a new catalogue of galaxy triplets derived from the Sloan Digital Sky Survey (SDSS) Data Release 7. The identification of systems was performed considering galaxies brighter than Mr=-20.5 and imposing constraints over the projected distances, radial velocity differences of neighbouring galaxies and isolation. To improve the identification of triplets, we employed a data pixelization scheme, which allows us to handle large amounts of data as in the SDSS photometric survey. Using spectroscopic and photometric data in the redshift range 0.01 =z= 0.40, we obtain 5901 triplet candidates. We have used a mock catalogue to analyse the completeness and contamination of our methods. The results show a high level of completeness ( 80 per cent) and low contamination ( 5 per cent). By using photometric and spectroscopic data, we have also addressed the effects of fibre collisions in the spectroscopic sample. We have defined an isolation criterion considering the distance of the triplet brightest galaxy to the closest neighbour cluster, to describe a global environment, as well as the galaxies within a fixed aperture, around the triplet brightest galaxy, to measure the local environment. The final catalogue comprises 1092 isolated triplets of galaxies in the redshift range 0.01 =z= 0.40. Our results show that photometric redshifts provide very useful information, allowing us to complete the sample of nearby systems whose detection is affected by fibre collisions, as well as extending the detection of triplets to large distances, where spectroscopic redshifts are not available.

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Approximately 370 brachyuran species have so far been recorded from the Brazilian coast, 123 of which have had their larval stages fully or partially described. The pictorial guide allows the identification of the first zoea of 110 species. The remaining 13 species with known larval stages are treated to the genus level because of difficulties in the morphological differentiation of closely related species.

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Nowadays, there is a great interest in the economic success of direct ethanol fuel cells; however, our atomistic understanding of the designing of stable and low-cost catalysts for the steam reforming of ethanol is still far from satisfactory, in particular due to the large number of undesirable intermediates. In this study, we will report a first-principles investigation of the adsorption properties of ethanol and water at low coverage on close-packed transition-metal (TM) surfaces, namely, Fe(110), Co(0001), Ni(111), Cu(111), Ru(0001), Rh(111), Pd(111), Ag(111), Os(0001), Ir(111), Pt(111), and Au(111), employing density functional theory (DFT) calculations. We employed the generalized gradient approximation with the formulation proposed by Perdew, Burke, and Erzenholf (PBE) to the exchange correlation functional and the empirical correction proposed by S. Grimme (DFT+D3) for the van der Waals correction. We found that both adsorbates binds preferentially near or on the on top sites of the TM surfaces through the 0 atoms. The PBE adsorption energies of ethanol and water decreases almost linearly with the increased occupation of the 4d and 5d d-band, while there is a deviation for the 3d systems. The van der Waals correction affects the linear behavior and increases the adsorption energy for both adsorbates, which is expected as the van der Waals energy due to the correlation effects is strongly underestimated by DFT-PBE for weak interacting systems. The geometric parameters for water/TM are not affected by the van der Waals correction, i.e., both DFT and DFT+D3 yield an almost parallel orientation for water on the TM surfaces; however, DFT+D3 changes drastically the ethanol orientation. For example, DFT yields an almost perpendicular orientation of the C-C bond to the TM surface, while the C-C bond is almost parallel to the surface using DFT +D3 for all systems, except for ethanol/Fe(110). Thus, the van der Waals correction decreases the distance of the C atoms to the TM surfaces, which might contribute to break the C-C bond. The work function decreases upon the adsorption of ethanol and water, and both follow the same trends, however, with different magnitude (larger for ethanol/TM) due to the weak binding of water to the surface. The electron density increases mainly in the region between the topmost layer and the adsorbates, which explains the reduction of the substrate work function.

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Abstract Background Food handlers have a very important role in preventing food contamination during its preparation and distribution. This responsibility is even greater in hospitals, since a large number of patients have low immunity and consequently food contamination by pathogenic bacteria could be particularly harmful. Therefore, a good working environment and periodic training should be provided to food handlers by upper management. Methods This study is qualitative research by means of focus group and thematic content analysis methodologies to examine, in detail, the statements by food handlers working in the milk and specific-diet kitchens in a hospital to understand the problems they face in the workplace. Results We found that food handlers are aware of the role they play in restoring patients' health; they consider it important to offer a good-quality diet. However, according to their perceptions, a number of difficulties prevent them from reaching this aim. These include: upper management not prioritizing human and material resources to the dietetic services when making resource allocation decisions; a perception that upper management considers their work to be of lesser importance; delayed overtime payments; lack of periodic training; managers lacking administrative skills; insufficient dietitian staff assistants, leading to overwork, at the same time as there is an excess of dietitians; unhealthy environmental working conditions – high temperature, high humidity, loud and constant noise level, poor ventilation; lack of food, and kitchen utensils and equipment; and relationship conflicts with chief dieticians and co-workers. Conclusion From these findings, improvement in staff motivation could be achieved by considering non-financial incentives, such as improvement in working conditions and showing appreciation and respect through supervision, training and performance appraisal. Management action, such as investments in intermediary management so that managers have the capacity to provide supportive supervision, as well as better use of performance appraisal and access to training, may help overcome the identified problems.

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Objetivou-se identificar a diferença no conhecimento sobre hipotermia do auxiliar de enfermagem após a intervenção educativa. A base conceitual de educação fundamenta-se na perspectiva da aprendizagem significativa, aliada à construção de mapa conceitual e à realização de estudo de caso. Os dados foram coletados por meio de um questionário validado por especialistas. A média do conhecimento após a intervenção educativa teve aumento de 3,49 pontos. Não se verificou diferença significativa do conhecimento quando foi relacionado às variáveis sociais e de formação estudadas. Conclui-se que a intervenção educativa foi satisfatória na medida em que as informações sobre hipotermia foram ancoradas e modificadas na estrutura cognitiva dos auxiliares de enfermagem.