No abstract

The use of games in Chemistry Teaching has been considered by educators as a motivating tool for the learning of knowledge. However, although there are proposals of games that approach several concepts of the discipline of Chemistry, there is no didactic game that addresses the teaching of the Periodic Table linked to the participation of women in the discovery of chemical elements. In this article, it is proposed the development and application of a game that uses the Periodic Table as a board and cards elaborated according to famous game Perfil. This set brought the students' interaction with the teacher, making the class dynamic, as well as relating the content to the current historical context and showing the contribution of women in Chemistry through tips, answers and explanations. This proposal was applied in 5 classes of the first year of high school in a state public school in the city of Bauru-SP, totaling 150 students and the pedagogical contribution was analyzed through a student evaluation questionnaire. The results show that the game arouses students' interest in the proposed content and improves the disciplinary aspect in the classroom.

They emerged more than 150 years ago; however, lead-acid batteries still remain as one of major energy production resources, especially applied to vehicles. In this paper, it is presented an analysis of lead-acid batteries as energy production facilities in vehicles or another application. A brief historical introduction is presented and addresses the main functional characteristics, as well as, the classifications and applications. Additionally the physicochemical principles involved and thermodynamic parameters are shown. With a multidisciplinary approach, it presents some technical fundamentals in electronics, physics, chemical and engineering, all of them, necessary for the knowledge of this subject.

Embora os temas ambientais sejam muito discutidos nas escolas, muitos conceitos relacionados a essa temática são desconhecidos ou pouco compreendidos pelos professores e alunos. Este artigo apresenta os dados obtidos por meio de um questionário estruturado cujo objetivo foi avaliar o conhecimento de 193 alunos do 3º ano do Ensino Médio da cidade de Bauru/SP, tanto de escolas públicas quanto particulares. Após responderem um questionário que abordou temas correlatos à ecologia, educação ambiental, genética e desmatamento/reflorestamento, foram propostas duas intervenções pedagógicas aos alunos por meio das quais, realizou-se uma revisão dos conceitos exigidos no questionário. Obtevese uma média de acertos para primeira e segunda aplicação de 45,5% e 56,1% (públicas) e de 57,9% e 67,8% (particulares), respectivamente. As turmas apresentaram diferença estatística significante (p<0,05) a partir da comparação das médias de acertos. Observou-se que os alunos desconhecem muitos dos conceitos apresentados nas intervenções.

The industrial rice processing generates, in average, 14% of broken grains called grits, which are not well accepted by consumers, representing large economic loss. Researches have been conducted to increase the use of rice by-products as well as their benefit. Among them, beverages are attracting the attention, being develop. To contribute to this field, this study aimed to prepare a non-alcoholic flavored drink from rice grits; evaluate the physical-chemical properties and evaluate de power consumption of stirring system for the drink industrial production. The drink production involved the cooking of the rice grits, followed by crushing, homogenization, filtration and flavorization in a stirring tank, obtaining the final product for consumption. The power consumption calculation for mixing tanks was evaluated in three different situations at 25ºC, considering the pre-defined tank design and the drink characteristics. Results based on the physicochemical characteristics indicate that the rice flavored drink is a food alternative to substitute milk or soy extract drinks. On the industrial production aspects, the increasing in the consumed energy to the small stirring variations was observed, and it needs to be considered to the stirring equipment design in the industrial process.