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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

A rela??o de Euler para poliedros

Santos, Odilon J?lio dos 31 March 2014 (has links)
Made available in DSpace on 2015-03-03T15:36:13Z (GMT). No. of bitstreams: 1 OdilonJS_DISSERT.pdf: 1624865 bytes, checksum: f08c3087f93d38a7f0eca20c25b43940 (MD5) Previous issue date: 2014-03-31 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / In this paper we analyze the Euler Relation generally using as a means to visualize the fundamental idea presented manipulation of concrete materials, so that there is greater ease of understanding of the content, expanding learning for secondary students and even fundamental. The study is an introduction to the topic and leads the reader to understand that the notorious Euler Relation if inadequately presented, is not sufficient to establish the existence of a polyhedron. For analyzing some examples, the text inserts the idea of doubt, showing cases where it is not fit enough numbers to validate the Euler Relation. The research also highlights a theorem certainly unfamiliar to many students and teachers to research the polyhedra, presenting some very simple inequalities relating the amounts of edges, vertices and faces of any convex polyhedron, which clearly specifies the conditions and sufficient necessary for us to see, without the need of viewing the existence of the solid screen. And so we can see various polyhedra and facilitate understanding of what we are exposed, we will use Geogebra, dynamic application that combines mathematical concepts of algebra and geometry and can be found through the link http://www.geogebra.org / Neste trabalho, analisamos a Rela??o de Euler de uma maneira geral, utilizando, como meios de visualiza??o, a manipula??o de materiais concretos, a fifim de que haja maior facilidade na percep??o do conte?do, expandindo a aprendizagem aos alunos de n?vel m?dio e at? fundamental. O estudo faz uma introdu??o ao tema e leva o leitor a entender que a Rela??o de Euler, se apresentada de maneira inadequada, n?o ? sufificiente para determinar a exist?ncia de um poliedro. Pois, analisando alguns exemplos, o texto insere a id?ia de d?vida, mostrando casos onde n?o ? sufificiente encaixar n?meros que validem a Rela??o de Euler. A pesquisa destaca ainda um teorema, certamente desconhecido de muitos alunos e professores que pesquisam sobre os poliedros, apresentando algumas inequa??es muito simples, relacionando as quantidades de arestas, v?rtices e faces de qualquer poliedro convexo, as quais definem de forma precisa as condi??es sufificientes e necess?rias para que possamos constatar, sem a necessidade da visualiza??o, a exist?ncia do s?lido em tela. E para que possamos visualizar v?rios poliedros e facilitar a compreens?o do que estamos expondo, utilizaremos o Geogebra, aplicativo de matematica din?mica que combina conceitos de geometria e alg?bra e pode ser encontrado por meio do link http://www.geogebra.org
2

Ensino de geometria espacial com utilização de vídeos e manipulação de materias concretos – um estudo no ensino médio

Paraizo, Ricardo Ferreira 02 July 2012 (has links)
Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-07-07T20:02:21Z No. of bitstreams: 1 ricardoferreiraparaizo.pdf: 3940678 bytes, checksum: 5e119e9029a47efd360b90ca2458d7cb (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-07-08T13:21:52Z (GMT) No. of bitstreams: 1 ricardoferreiraparaizo.pdf: 3940678 bytes, checksum: 5e119e9029a47efd360b90ca2458d7cb (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-07-08T13:22:06Z (GMT) No. of bitstreams: 1 ricardoferreiraparaizo.pdf: 3940678 bytes, checksum: 5e119e9029a47efd360b90ca2458d7cb (MD5) / Made available in DSpace on 2016-07-08T13:22:06Z (GMT). No. of bitstreams: 1 ricardoferreiraparaizo.pdf: 3940678 bytes, checksum: 5e119e9029a47efd360b90ca2458d7cb (MD5) Previous issue date: 2012-07-02 / Neste trabalho investigamos as possibilidades e limitações emergentes da utilização integrada de vídeos didáticos e da manipulação de materiais concretos no ensino de geometria no Ensino Médio. A pesquisa, conduzida segundo os critérios da grounded theory, foi realizada com doze participantes do terceiro ano de uma escola pública de Minas Gerais. A coleta e a análise dos dados tiveram como foco os conceitos de área de figuras planas e de volume de sólidos. O estudo descreve as percepções e concepções dos participantes em relação aos conceitos geométricos supra-referidos e à abordagem metodológica utilizada, e sugere que o ludismo, a interação, a contextualização, a etimologia, a qualidade de imagem e som, a concisão e a clareza são os principais elementos a serem observados em vídeoproduções com objetivos similares ao investigado. A pesquisa destaca ainda o papel significativo da manipulação de materiais concretos pelos participantes, assim como o papel mediador do professor, ao longo de todo o processo instrucional. / In this work we investigate the possibilities and limitations arising from the integrated use of educational videos and manipulation of concrete materials in high school geometry. The research was conducted, according to the grounded theory method, with twelve third-year high school participants from a public school of Minas Gerais, Brazil. The data collection and analysis focused on the concept of area of plane figures and on the concept of volume of solids. The study describes the perceptions and conceptions of the participants in relation to the aforementioned geometric concepts as well as to the methodological approach, and suggests that ludic dimension, interaction, context, etymology, image and sound quality, conciseness and clarity are the main elements to be observed in video productions addressing similar goals. The research also highlights as significant the manipulation of concrete materials by the participants as well as the mediator role of the teacher throughout the instructional process.

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