811 resultados para Learning. Mathematics. Quadratic Functions. GeoGebra


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Thesis (Master's)--University of Washington, 2016-06

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Esta pesquisa tem como objetivo descrever e analisar representações sociais construídas por professores de matemática em atuação na Região da Grande São Paulo e que envolvem dificuldades na aprendizagem dessa disciplina. O objeto desta investigação está centrado nas vivências desses professores da educação básica com o ensino de matemática. O conceito de representação social (Moscovici, 1978, 2004; Jodelet, 2001, 2002) e a formação de professores de matemática (Fiorentini e Lorenzato, 2001, 2006; Valente, 2002; Miorim, 1998) foram os pressupostos teóricos que fundamentaram esta pesquisa. Este estudo, realizado com professores de matemática em atuação, teve como principal motivação a possibilidade de contribuir para uma reflexão tanto sobre a formação de professores de matemática em cursos de licenciatura como a respeito dos entraves e avanços na formação pedagógica e suas relações com a aprendizagem dos alunos na disciplina. Os resultados da presente pesquisa apontam para a seguinte constatação: as representações que os professores têm de seus alunos com baixo rendimento os levam a refletir sobre a própria atuação pedagógica e definem a ação a ser tomada perante esses alunos.

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The problem of evaluating different learning rules and other statistical estimators is analysed. A new general theory of statistical inference is developed by combining Bayesian decision theory with information geometry. It is coherent and invariant. For each sample a unique ideal estimate exists and is given by an average over the posterior. An optimal estimate within a model is given by a projection of the ideal estimate. The ideal estimate is a sufficient statistic of the posterior, so practical learning rules are functions of the ideal estimator. If the sole purpose of learning is to extract information from the data, the learning rule must also approximate the ideal estimator. This framework is applicable to both Bayesian and non-Bayesian methods, with arbitrary statistical models, and to supervised, unsupervised and reinforcement learning schemes.

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The analysis and prediction of the dynamic behaviour of s7ructural components plays an important role in modern engineering design. :n this work, the so-called "mixed" finite element models based on Reissnen's variational principle are applied to the solution of free and forced vibration problems, for beam and :late structures. The mixed beam models are obtained by using elements of various shape functions ranging from simple linear to complex cubic and quadratic functions. The elements were in general capable of predicting the natural frequencies and dynamic responses with good accuracy. An isoparametric quadrilateral element with 8-nodes was developed for application to thin plate problems. The element has 32 degrees of freedom (one deflection, two bending and one twisting moment per node) which is suitable for discretization of plates with arbitrary geometry. A linear isoparametric element and two non-conforming displacement elements (4-node and 8-node quadrilateral) were extended to the solution of dynamic problems. An auto-mesh generation program was used to facilitate the preparation of input data required by the 8-node quadrilateral elements of mixed and displacement type. Numerical examples were solved using both the mixed beam and plate elements for predicting a structure's natural frequencies and dynamic response to a variety of forcing functions. The solutions were compared with the available analytical and displacement model solutions. The mixed elements developed have been found to have significant advantages over the conventional displacement elements in the solution of plate type problems. A dramatic saving in computational time is possible without any loss in solution accuracy. With beam type problems, there appears to be no significant advantages in using mixed models.

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In this TCC the deal with a underlying but essential topic of Mathematics, namely: Functions. Many students start their course in the University asking: Why do we need functions? With that in mind we try to antecipate to this question and we try to show that functions come up so naturally that a name was needed to express that association which exists between the elements of two sets. After this definition was established, we present and formalize some other concepts that functions might have, as: an interview of ascendence/descendence, 1-1, etc.

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The semantic model described in this paper is based on ones developed for arithmetic (e.g. McCloskey et al. 1985, Cohene and Dehaene 1995), natural language processing (Fodor 1975, Chomsky 1981) and work by the author on how learners parse mathematical structures. The semantic model highlights the importance of the parsing process and the relationship between this process and the mathematical lexicon/grammar. It concludes by demonstrating that for a learner to become an efficient, competent mathematician a process of top-down parsing is essential.

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Avhandlingens syfte är att undersöka lösningsförslags uppkomst och behandling i små grupparbeten samt att ta reda på samband mellan samarbetsnivån och behandlingen av dessa lösningsförslag. Mina problemformuleringar är: - Hur många lösningsförslag uppstår i grupperna, och hur mycket behandlas de? - Existerar, och i så fall vad kan man säga om, ett samband mellan samarbetsnivån och behandlingen av dessa lösningsförslag? I studien har en kvalitativ metod använts. Insamling av material har gjorts via VIDEOMATprojektet och består av videofilmer av problemlösningstillfällen. Dessa filmer har observerats och analyserats med hjälp av en interaktionsanalys i form av ett flödesschema. Alla elever i studien gick vid tillfället i årskurs 6 och eleverna kommer från Finland, Sverige och USA. Grupperna bestod av tre eller fyra elever var och en grupp från varje land observerades och undersöktes. Inga generella slutsatser beträffande ländernas olika prestationer har gjorts eftersom samplet är litet. I varje grupp uppstod tre eller fyra olika lösningsförslag, och huvudsakligen behandlades två av förslagen mer än de andra. De flesta lösningsförslag som inte behandlades mycket bidrog ändå i någon form till lösandet av problemet. Angående sambandet mellan behandlingen av lösningsförslagen och samarbetsnivån i grupperna blev det tydligt att grupper som samarbetar mer använde sig av fler pro- och reaktiva kommentarer i form av förklaringar som tog i beaktande det som tidigare sagts av eleverna. Goda sociala färdigheter, och kunskap om hur man arbetar i grupp, är essentiella både för samarbetet och för ett gemensamt lösande av problemet. Som lärare kan man träna eleverna i samarbete och belysa vikten av reflektion av de erhållna lösningarna i problemlösningsprocessernas slutskede för att uppnå effektivare grupparbeten. Interaktionsanalysen visade sig vara ett kraftigt verktyg för att analysera elevernas diskussioner och tolka deras kommentarer.

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Relatório de Estágio apresentado à Escola Superior de Educação de Lisboa para obtenção do grau de mestre em Ensino do 1.º e 2.º Ciclos do Ensino Básico

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Relatório de estágio apresentado para a obtenção do grau de mestre em Ensino do 1.º e do 2.º Ciclos do Ensino Básico

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Relatório de estágio para obtenção de grau mestre em Educação pré-escolar e Ensino do 1.º ciclo do ensino básico

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Relatório de estágio apresentado para a obtenção do grau de mestre em Ensino do 1.º e do 2.º Ciclos do Ensino Básico

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Relatório de estágio para obtenção de grau mestre em Educação pré-escolar e Ensino do 1.º ciclo do ensino básico

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The objective of this study is to analyze the validity of working with proofs in the classroom and to present a partial list of proofs of mathematical formulae of the Brazilian secondary/high school curriculum. The adaptation of the proofs into the knowledge and abilities of a secondary school student should also be considered. How the teaching of proofs is treated in official publications in Brazil and other countries is also described. Working with proofs provides a number of benefits to the students, including: the development of logical reasoning, argumentative capacity, analytical skills on a daily basis, as well as motivation and a better understanding of mathematics as a science. The convenience of including the teaching of proofs in Brazilian secondary school curriculum and the need of a balance between the abstraction of proofs and contextualization of the school programmes is discussed. The approach of the proof teaching in the classroom can become a motivating factor or, conversely, a discouraging one. The conclusion is that it would be very useful to create a reference list covering the mathematical expressions of school programmes with their respective proofs that can be understood by secondary school students.

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Die Jahrestagung der Gesellschaft für Didaktik der Mathematik fand im Jahr 2015 zum dritten Mal in der Schweiz statt. [...] Mit rund 300 Vorträgen, 16 moderierten Sektionen, 15 Arbeitskreistreffen und 21 Posterpräsentationen eröffnete sich ein breites Spektrum an Themen und unterschiedlichen Zugangsweisen zur Erforschung von Fragen rund um das Lernen und Lehren von Mathematik. (DIPF/Orig.)

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Dissertação de Mestrado, Educação Pré-Escolar, Escola Superior de Educação e Comunicação, Universidade do Algarve, 2016