Sobre a identidade do Centro de Educação Matemática (CEM): acidentes de uma leitura cartesiana

In this paper we present results of research conducted on the constitution of the identity of CEM (Centre for Mathematics Education), a group of mathematics teacher educators from the city of São Paulo, Brazil (1984-1997). We emphasize the processes of constitution of CEM’s identities, on the perspective of Oral History in Mathematics Education, of the Model of Semantic Fields and of theories of identities. As part of the broader endeavor of examining possibilities for constituting identities for the group, from several theoretical standpoints, here we report an exercise on constituting the identity of CEM from a Cartesian standpoint; the overall assumption is that we are not properly interested in what CEM is or was, but on the possibilities themselves. We argue that such analysis leads to an understanding of the group as being an accident involving the individual identities of its members but not to an understanding of CEM’s group identity as such.

Cómo se puede implementar la Historia Oral en Educación Matemática?

What is known today as “Oral History” is a research methodology which, in Brazil, has been widely used in the field of cultural studies by sociologists, anthropologists, and historians. Oral History was first introduced in Brazil with studies in social psychology and then spread to many other academic spheres, with the field of mathematics education being one of the most recent to adopt this method as one of its theoretical-methodological references. Topics such “What Oral History is” and “How Oral History can be implemented in mathematics education” are the foci of this paper.

Matemática e arte: incursões na interdisciplinaridade

The complex analysis is, in actuality, a fundamental mathematical object, given its applicability to various areas of science. This paper proposes a more interesting intertwining of mathematical content to the Visual Arts, through computer graphics. The presentation of aesthetic standards, using the “domain coloring” for viewing a complex function, shows that algebraic and geometric properties can be “colored” which makes its study more human, contextualized, pleasant and dynamic, leading to greater ability to understand, to absorb and to create concepts. This work shows the contribution to the interdisciplinarity to study of mathematics.

A dialética materialista histórica na Educação Matemática

Apresentamos nosso entendimento, confirmado por pesquisa e pela prática em diversas situações de sala de aula, de que o método da Dialética Materialista Histórica pode e deve ser utilizado no ensino e na aprendizagem de Matemática. Neste artigo, exemplificamos a abordagem sugerida, discutindo dialeticamente a expressão matemática do Fator Previdenciário.

Modelagem matemática de aferições de temperatura com aplicação em graus-dias para cultura da cana-de-açúcar

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

O ensino de matemática em duas escolas profissionalizantes: Brasil e Portugal, no período de 1942 a 1978

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Uma análise dos livros de André Perez Y Marin: um momento da história da matemática escolar brasileira no início do século XX

Pós-graduação em Educação Matemática - IGCE

A Avaliação na sala de aula de matemática: práticas e concepções

This research aims to understand the assessment practices used by teachers at a public state school in the city of Cunha, Sao Paulo. To this end, we interviewed five mathematics teachers, who answered a questionnaire with five questions. The responses were analyzed according to the rigor of phenomenological research. To understand the investigation region, that is to say, the meaning of evaluation, we proceeded to a review of studies on the subject in authors like Buriasco (2002), Pavanello (2006), Hoffmann (1994), expressive in Mathematics Education that allows us to explain the concept of prevailing interpretation in the area. The phenomenological analysis enabled the development of three categories open revealing the concept of evaluation of teachers investigated. The first shows the review As a way to measure the knowledge acquired by the student. His interpretation leads us to understand that for some teachers, the research subjects, the assessment becomes a method to ' measure ' the knowledge acquired by the student. The second category, expressed by As a way of understanding the student's behavior in class, shows that some of the interviewees understand the evaluation as a medium that reveals and appreciates the ways of the student behave in class. Finally, the third category refers to the evaluation by means of said instruments. On this subject the claim that the assessment is through instruments such that: evidence, exercise lists, among others. In summary, interviews and categories analyzed explain the ways in which the assessment reveals the concept of implicit learning the instruments used in the evaluation practices of teachers interviewed. However, the authors read, evaluation is a necessary and permanent teaching job in teaching, which must follow step by step the process of teaching and learning. It follows, ... (Complete abstract click electronic access below)

Luís António Verney: o verdadeiro método de estudar: uma contribuição para o ensino em Portugal e no Brasil

Pós-graduação em Educação Matemática - IGCE

Uma análise dos livros de André Perez Y Marin: um momento da história da matemática escolar brasileira no início do século XX

Pós-graduação em Educação Matemática - IGCE

A Avaliação na sala de aula de matemática: práticas e concepções

This research aims to understand the assessment practices used by teachers at a public state school in the city of Cunha, Sao Paulo. To this end, we interviewed five mathematics teachers, who answered a questionnaire with five questions. The responses were analyzed according to the rigor of phenomenological research. To understand the investigation region, that is to say, the meaning of evaluation, we proceeded to a review of studies on the subject in authors like Buriasco (2002), Pavanello (2006), Hoffmann (1994), expressive in Mathematics Education that allows us to explain the concept of prevailing interpretation in the area. The phenomenological analysis enabled the development of three categories open revealing the concept of evaluation of teachers investigated. The first shows the review As a way to measure the knowledge acquired by the student. His interpretation leads us to understand that for some teachers, the research subjects, the assessment becomes a method to ' measure ' the knowledge acquired by the student. The second category, expressed by As a way of understanding the student's behavior in class, shows that some of the interviewees understand the evaluation as a medium that reveals and appreciates the ways of the student behave in class. Finally, the third category refers to the evaluation by means of said instruments. On this subject the claim that the assessment is through instruments such that: evidence, exercise lists, among others. In summary, interviews and categories analyzed explain the ways in which the assessment reveals the concept of implicit learning the instruments used in the evaluation practices of teachers interviewed. However, the authors read, evaluation is a necessary and permanent teaching job in teaching, which must follow step by step the process of teaching and learning. It follows, ... (Complete abstract click electronic access below)

Luís António Verney: o verdadeiro método de estudar: uma contribuição para o ensino em Portugal e no Brasil

Pós-graduação em Educação Matemática - IGCE

Resolución de problemas : Matemática, Ciencias Sociales y Ciencias Naturales

Desde la Universidad Nacional de Cuyo y en articulación con la Dirección General de Escuelas del Gobierno Provincial, acercamos a todos los alumnos que tengan intenciones de continuar sus estudios superiores el presente material que contiene herramientas que permiten nivelar conocimientos y lograr la preparación básica necesaria para el ingreso a cualquier estudio de nivel superior. Así, la intención de esta propuesta y de este material supone promover la igualdad de oportunidades para el ingreso a la Universidad; generar instancias de articulación entre el nivel Polimodal y el universitario y desarrollar competencias básicas a través de la modalidad de educación a distancia.

Formulación tridimensional del método de los elementos de contorno con interpolación parabólica

El método de los elementos de contorno ha suscitado un interés creciente en los últimos diez años, presentándose como una herramienta útil para la resolución de problemas de la ingeniería estructural , modelados matemáticamente por sistemas de ecuaciones diferenciales en derivadas parciales. A través de una formulación integral en el contorno del dominio, donde se define el problema, se consigue la resolución de éste, mediante la sola discretización de aquél, en contraposición a los métodos de dominio, que necesitan la completa discretización del mismo (Elementos Finitos ). Estos años han servido, por un lado para cimentar el método anterior - en cuanto a sus bases matemáticas se refiere, y por otro para definir los campos de la Física donde su utilización podría ser más efectiva. Puede decirse que han sido lo que la década de los 60 para elementos finitos : la preparación inicial para el desarrollo espectacular hoy alcanzado. De hecho, el método de los elementos finítos es capaz de abordar eficazmente los grandes retos que plantea el cálculo estructural en la actualidad, mientras que los elementos de contorno no han alcanzado aún dicho estadio. Esta Tesis pretende establecer el camino definitivo para la resolución de este tipo de problemas en el caso elástico tridimensional. Para ello, se ha desarrollado la formulación pertinente tanto en su fase, puramente matemática, como numérica para medios tridimensionales heterogéneos, así como un programa de grandes posibilidades que permiten atacar cualquier caso prácticamente sin limitaciones de tamaño, geometría ó condiciones de contorno en el marco de la Elasticidad Tridimensional. El trabajo se compone de dos partes claramente diferenciadas, el estudio y planteamiento del método, así como la descripción de las soluciones adoptadas para la resolución de los múltiples problemas numéricos que plantea no solo el método en sí, sino la implementación de un programa de tales características , y de un anexo que comprende la descripción detallada de cada uno de los apartados que componen el programa. Por último y paralelamente se ha analizado también el caso axisimétrico, problema tridimensional con características muy especificas, desarrollandose su formulación e implementando asimismo un programa que demuestra la exactitud de dicha formulación.

Simulación numérica del cruce de trenes: combinación de un método de reducción del modelo con una implementación de los elementos de contorno

En este artículo se presentan los resultados obtenidos con un método aproximado para calcular las historias temporales de los coeficientes aerodinámicos correspondientes a las fuerzas y los momentos a que están sometidos los coches de cabeza durante el cruce de dos trenes de alta velocidad al aire libre.