35 resultados para Química e ensino


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Este artigo baseia-se em dissertação de mesmo título, apresentada à Universidade do Sul de Santa Catarina. Tem por objetivo estimar a prevalência da síndrome de burnout em professores do Ensino Médio da rede pública estadual em Tubarão (SC). Um grupo de 101 professores de sete Escolas de Ensino Médio, com atividades em sala de aula, responderam a um questionário de dados sociodemográficos e funcionais e ao Maslach burnout inventory - educators survey. Verificou-se a existência de correlação entre os escores fatoriais das três dimensões da síndrome de burnout e as variáveis independentes. A prevalência da síndrome de burnout foi de 12,9%. Encontrou-se correlação positiva entre tempo de serviço e a dimensão Despersonalização (r=0,2101; p=0,035), bem como entre a dimensão Despersonalização e a situação funcional (r =0,2929; p=0,003). Os resultados indicam alta chance de desenvolvimento de burnout ou burnout em curso. A adoção de medidas de promoção à saúde mental dos professores poderia evitar a despersonalização entre professores observada nesse estudo

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For increasing, the fish consumption in Brazil, is necessary offer products, with quality control to guarantee food safety to the consumers. The Medium Tiete river region is the largest producer of Nile tilapia (Oreochromus niloticus) from catching in the Sao Paulo state and, thus, the aim of this research was to evaluate the physical-chemical parameters (protein, moisture, lipid, ash and freshness (non-protein nitrogen, total volatile base nitrogen -TVB-N and pH) in fish fillets - Anhembi, Botucatu and Igaracu do Tiete. The data was examined further using random blocks design and submitted to test of variance analysis and Tukey Test for comparison of means. The data showed significant difference (5%) amont the places, for the centesimal composition and freshness, being found the following medium values: misture (77.9 to 81.69 g/100g), protein (13.72 to 18.25 g/100g), lipids (0.6 to 1.9 g/100g), ash (0.6 to 1.0g), NNP(61.6 to 78.0 mg/100g), pH (6.2 to 6.4) and TVB-N (5.0 to 10.5 mg/100g). The values found in the physical-chemical and freshness analysis are in according with brazilian's legislation, the processing of fish in the places studied are-irregular and cannot guarantee food safety to the consumers and the quality of the product.

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This article presents the results of a study that investigated the meaning of evaluation in mathematics from the historical cultural perspective, focusing on activity theory. In order to develop the investigation, a collaborative group was formed from the Oficina Pedagogica de Matematica de Ribeirao Preto - Sao Paulo (Math Pedagogic Workshop of Ribeirao Preto - OPM/RP), constituted of pre-school teachers and early elementary school teachers, who were participants in this research. The main role of the collaborative group was to offer guided development to the teachers about the teaching of mathematics from the historical-cultural perspective, aiming at collecting data on the process of appropriation of mathematical knowledge by the teachers. The syntheses about the teachers' learning process have contributed to systematize the guiding elements of evaluation in mathematics from the historical-cultural perspective.

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The goal of this paper is to show the diffusion, reception, and utilization of Omar Catunda's book Course of Mathematical Analysis for mathematics and engineering teaching in Brazilian universities, e. g., University of Sao Paulo and the University of Bahia from 1950 to 1976. We used interviews of some ex-alumni or users of his book. We also present some signs of the influence of his book and of Catunda himself at University of Rio Grande do Sul. We argue that Catunda and his book were important agents of process of modernizing the teaching of calculus and analysis, through his classes as well as his book.