This diploma thesis deals with the topic negative numbers, especially with strategies and difficulties of 7th and 8th grade primary school pupils when solving selected tasks with negative numbers. This thesis is divided into theoretical and experimental parts. The theoretical part deals with negative numbers, their development, didactic difficulty and work with them. The thesis deals with selected international comparative and foreign researches with the focus on negative numbers. The most extensive part of the thesis contains an analysis of mathematics textbooks used in schools in the Czech Republic with the focus on negative numbers. The experimental part, which aim is the identification of pupils' difficulties and the analysis of mistakes they make when working with negative numbers, is the key part of the thesis. 185 pupils of 7th and 8th grade from three different schools took part in the research. The methodology consisted of the preparation of a didactic test on negative numbers and assigning it to the pupils. After completing the test, selected pupils were asked to explain their written solutions. The didactic test was prepared on the basis of mentioned research results and the analysis of mathematics textbooks. The data were analysed in terms of pupils' strategies and mistakes. The thesis...

Made available in DSpace on 2014-12-17T15:04:50Z (GMT). No. of bitstreams: 1 MartaFA.pdf: 422236 bytes, checksum: c082c32935e784fcbc231f73fd326d64 (MD5) Previous issue date: 2008-06-26 / The present study seeks to present a historico-epistemological analysis of the development of the mathematical concept of negative number. In order to do so, we analyzed the different forms and conditions of the construction of mathematical knowledge in different mathematical communities and, thus, identified the characteristics in the establishment of this concept. By understanding the historically constructed barriers, especially, the ones having ontologicas significant, that made the concept of negative number incompatible with that of natural number, thereby hindering the development of the concept of negative, we were able to sketch the reasons for the rejection of negative numbers by the English author Peter Barlow (1776 -1862) in his An Elementary Investigation of the Theory of Numbers, published in 1811. We also show the continuity of his difficulties with the treatment of negative numbers in the middle of the nineteenth century / O presente estudo visa apresentar um incurso hist?rico-epistemol?gico no desenvolvimento do conceito matem?tico de n?mero negativo. Para tanto, inter-relacionamos as diferentes formas e condi??es de constru??o do conhecimento matem?tico e, assim, identificando as conseq?entes caracter?sticas no estabelecimento do referido conceito, em diferentes comunidades matem?ticas e momentos hist?ricos. Com isso, diante de um entendimento das barreiras constru?das historicamente perante o conceito de n?mero negativo, especialmente, as de origem ontol?gicas, que incompatibilizava o conceito de n?mero negativo com o conceito de n?mero natural, impedindo o desenvolvimento do conceito de n?mero negativo. Assim, esbo?amos as raz?es de rejei??o aos n?meros negativos, como ra?zes de equa??es, pelo ingl?s Peter Barlow (1776 1862) em An Elementary Investigation of the Theory of Numbers, publicada em 1811. N?s tamb?m diagnosticamos a continuidade das dificuldades com o tratamento com os n?meros negativos, j? em pleno transcurso do s?culo XIX

Made available in DSpace on 2016-04-27T16:57:47Z (GMT). No. of bitstreams: 1 EDM - HUMBERTO MESTRADO PROFISSIONAL.pdf: 6034166 bytes, checksum: 3482e42fe5798307bbd8da4d3a402923 (MD5) Previous issue date: 2006-10-23 / Secretaria da Educação do Estado de São Paulo / The objective of this dissertation was to investigate the possible performance of introducing the entire negative number on the 3rd cycle of the fundamental school in a public organization on replication of part of the Passoni (2002) work so as to respond the following questions of the investigation: Starting from a sequence formed by a familiar and significant context, what is the comprehension that the 3rd cycle school children will have over negative numbers? To what extended level this sequence might aid on introducing this concept? At last, what s this improvement consisted of? On this approach, an interventionist investigation was developed with students of two groups of the 3rd cycle fundamental public school in the city of Sao Paulo; one of them named as the control group (CG) and the other one being the experimental group (EG). The field survey had two steps execution of diagnostic instruments (before and after tests) on the CG as well as the EG group and carrying out the teaching intervention with the usage of manipulative material only at the EG.The results obtained in each of these steps were evaluated considering the possible introduction of the negative numbers to the students of the 3rd fundamental cycle. In theory, we lay down on the ideas of Jean Piaget and Raymond Duval related to the kind of representations that can act upon the Mathematic conception. The target is to make students able to convert intentional treatments of semiotic representations in roughly instantaneous treatments. The results show a 50% increase on student s performance of EG group, at pos test. Taking into account these results, it can be concluded that the associative intervention on teaching with manipulative material has developed strategies for the solution of the activities. The activities were developed with 17 children of EG and 18 ones of the CG. The results are said to be satisfactory / O objetivo desta dissertação foi investigar a possibilidade e eficiência de se introduzir o número inteiro negativo na 3ª. série do Ensino Fundamental de uma escola pública, reaplicando parte do estudo desenvolvido por Passoni (2002), a fim de responder às seguintes questões de pesquisa: Partindo de uma seqüência elaborada que utilize um contexto familiar e significativo, qual a compreensão que as crianças de 3ª. série passam a ter sobre os números negativos? Até onde tal seqüência pode ajudar na introdução desse conceito? E, por último, em que consiste o avanço? Para tanto, foi desenvolvida uma pesquisa de caráter intervencionista com alunos de duas classes de 3ª. série do Ensino Fundamental de uma escola da rede pública municipal de São Paulo; uma delas constituiu-se em grupo controle (GC) e a outra em grupo experimental (GE). A pesquisa de campo complementou duas etapas aplicação dos instrumentos diagnósticos (pré e pós-testes), tanto no GE como no GC e aplicação da intervenção de ensino com uso de material manipulativo apenas no GE. Os resultados obtidos em cada uma dessas etapas foram analisados considerando a possibilidade da introdução dos números inteiros negativos na 3ª. série do Ensino Fundamental. Do ponto de vista teórico, apoiamos-nos nas idéias de Jean Piaget e Raymond Duval relacionados ao papel que as representações desempenham na compreensão da Matemática. A meta é de tornar os alunos capazes de transformar tratamentos intencionais de representações semióticas em tratamentos quase-instantâneos. Os resultados mostraram um crescimento de quase 50% no desempenho dos alunos do GE, no pós-teste. Tendo por base tais resultados pode-se concluir que a associação da intervenção de ensino com o material manipulativo possibilitou o desenvolvimento de estratégias para resoluções das atividades. As atividades foram desenvolvidas com 17 crianças do grupo GE e 18 crianças do grupo GC. Os resultados obtidos foram satisfatórios

This diploma thesis is focused on study of cognitive and communicative phenomena, which appear at solving exercises in semantic and arithmetic environment First-Grade Students' Stepping. These phenomena are revealed by a set of quantitative analysis experiments undertaken with first-grade pupils. Theoretical basis, which make the description of revealed phenomena possible, are generic model theory and semantic embedding of number (Hejný), procept theory (Gray and Tall), mathematical schema building theory (Hejný) and didactic constructivism, structural and semantic conception of number, process, concept, procept.