Multiplicative Structures
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. El pensamiento multiplicativo de niños del pueblo indígena shipibo-konibo de Ucayali: una perspectiva piagetiana
Abstract The objective of this study was to identify and describe levels of multiplicative thinking in a group of Shipibo-Konibo children from the Ucayali region, in the Peruvian Amazon rainforest. Fourteen elementary school students from two Shipibo-Konibo communities, boys and girls aged between 7 and 12 years old, participated in the study. They were eval
Educ. Pesqui.. Publicado em: 24/10/2019
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2. Marcas da divisão : um estudo de caso sobre a aprendizagem da operação de divisão no 4° ano do Ensino Fundamental
The present dissertation presents a research on the division operation learning with children of the 4th grade of Elementary School. The purpose of this research to verify if, through a teaching proposal in which children could experience the division operation in various contexts and situations, it would be possible to favour the (re) construction of their
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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3. Uma sequência didática de medidas de comprimento e superfície no 5º ano do ensino fundamental: um estudo de caso
O objetivo deste trabalho foi elaborar, aplicar e analisar uma sequência didática que abordasse o tema das medidas de comprimento e área, numa turma da quarta série (quinto ano) do Ensino Fundamental. Decidiu-se desenvolver essa pesquisa em virtude de dificuldades apresentadas por alunos de Ensino Médio e egressos das escolas, relacionadas ao tema das g
Publicado em: 2010
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4. Problemas de estruturas aditivas e multiplicativas propostos em livros didÃticos de matemÃtica: o impacto do Programa Nacional do Livro DidÃtico
This research presents an analysis of how additive and multiplicative problems are presented in Elementary School Mathematics textbooks. The aim of the study is to observe the impact that the PNLD, the Brazilian National Plan of Textbooks, has on the treatment given to the meanings of the arithmetic operations and the forms of symbolic representations presen
Publicado em: 2009
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5. Análise do desempenho de alunos do ensino fundamental em jogos matemáticos: reflexões sobre o uso da calculadora nas aulas de matemática
This research aims to investigate what teaching strategies, considering the use of a calculator in the classroom can become more efficient perception of mistakes in handling additive and multiplicative between students in a 7th grade of elementary school, in the afternoon shift of a State School in Osasco city S.P. (Brazil). This study consisted of a qualita
Publicado em: 2009
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6. Números fracionários : a construção dos diferentes significados por alunos de 4ª a 8ª series de uma escola do ensino fundamental
A presente pesquisa investiga a aquisição do conceito de número racional na sua representação fracionária. O estudo justifica-se devido ao alto índice de dificuldades apresentadas pelos alunos na compreensão do conceito de número racional, que faz parte do pensamento multiplicativo. Apontamos a conexão entre os números fracionários e o raciocíni
Publicado em: 2008
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7. Expressões Aritméticas: Crenças, Concepções e Competências no entendimento do Professor Polivalente
The present work is to identify and to analyse the beliefs, conceptios and abilities of teachers who teach from first to fourth grade of Basic Education working with arithmetical expressions. In this study we noticed that, the comprehension of a particular groups of situation problems called by mixed structures. In these problems, we have additive and multip
Publicado em: 2006
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8. FormaÃÃo continuada de professores sobre estruturas multiaplicavas a partir de seqÃÃncias didÃticas
The present research investigated the viability of a process of teacher inservice education on multiplicative structures based on didactic sequences. This process involved the analysis of the appropriation of two primary school teachers from a municipal school of Recife of structure problem solving. In this sense, the teachers experienced and elaborated dida
Publicado em: 2006
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9. Should Individual Fitness Increase with Heterozygosity?
Natural selection influences not only gamete frequencies in populations but also the multilocus fitness structures associated with segregating gametes. In particular, only certain patterns of multilocus fitnesses are consistent with the maintenance of stable multilocus polymorphisms. This paper offers support for the proposition that, at stable, viability-ma
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10. Deviations of Genotypic Structures from Hardy-Weinberg Proportions under Random Mating and Differential Selection between the Sexes
Population genetic models, such as differential viability selection between the sexes and differential multiplicative fecundity contributions of the sexes, are considered for a single multiallelic locus. These selection models usually produce deviations of the zygotic genotype frequencies from Hardy-Weinberg proportions. The deviations are investigated (with
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11. Effects of the tat and nef gene products of human immunodeficiency virus type 1 (HIV-1) on transcription controlled by the HIV-1 long terminal repeat and on cell growth in macrophages.
The RAW264 murine macrophage cell line was used as a model to examine the role of the tat and nef gene products in the transcription regulation of the human immunodeficiency virus type 1 (HIV-1) long terminal repeat (LTR) in macrophages. Contrary to claims that the activity of the HIV-1 LTR responds poorly in rodent cells to trans activation by the viral tat