Geometric Demonstration
Mostrando 1-8 de 8 artigos, teses e dissertações.
-
1. Sistema para a aprendizagem de demonstrações da geometria euclidiana plana : LEEG / A system for learning demonstrations in plane euclidean geometry - LEEG
O presente artigo apresenta o sistema para a aprendizagem de demonstrações da Geometria Euclidiana Plana LEEG (Learning Environment on Euclidean Geometry). Esse sistema foi formalizado e implementado sobre o protocolo de aprendizagem MOSCA (Mestre + Oráculo + Sonda + Cliente + Aprendiz), formado por cinco agentes distintos, que interagem durante o process
Publicado em: 2010
-
2. Construções geométricas: uma alternativa para desenvolver conhecimentos acerca da demonstração em uma formação continuada
The purpose of this study is to analyze a sequence of activities carried out with in service teachers, aiming the construction of the definition of line bisector of a segment and, from this definition, to allow them to demonstrate inherent properties of this mathematical object. Moreover, the study also aimed that the teachers were able to justify it mathema
Publicado em: 2008
-
3. Conceito de área: da composição e decomposição de figuras até as fórmulas
The objective of this research is to investigate across the use of composition and decomposition of plan forms, until the demonstration of the formula, how the area concept can be showed in the significative and motivating way to the students. To do it, we direct our studies from some hypothesis: How the reconfiguration processes of polygon forms
Publicado em: 2007
-
4. Concepção de uma seqüência de ensino para o estudo da semelhança: do empírico ao dedutivo
The aim of this research is to investigate how the concept of similar figures can be presented in a significant and motivate way to the students attending the first grade of Brazilian high school system, so that the proof can be an integrant part of this process. We tried to answer the research questions: How is the transition from concrete geometry to space
Publicado em: 2006
-
5. Immunoglobulin A antibodies to Trypanosoma cruzi antigens in digestive forms of Chagas' disease.
In an attempt to find a serological marker for the diagnosis of chronic digestive forms of Chagas' disease, we compared amastigote and trypomastigote antigens obtained from immunosuppressed mice infected with Trypanosoma cruzi (Y strain) with conventional epimastigote antigens to search for immunoglobulin A (IgA) antibodies. A total of 255 serum samples from
-
6. Evidence of Chlamydia trachomatis infection in sexually acquired reactive arthritis.
Thirty male patients with sexually acquired reactive arthritis (SARA) have been studied at the time of their initial presentation and thereafter. Chlamydia trachomatis was isolated from the urethral exudate of 9 (36.0%) of the 25 patients from whom urethral specimens were taken, and elevated titres of IgM antibody of C. trachomatis were detected in 11 (36.6%
-
7. Passive Transfer of Immunoglobulin Y Antibody to Streptococcus mutans Glucan Binding Protein B Can Confer Protection against Experimental Dental Caries
Active immunization with Streptococcus mutans glucan binding protein B (GBP-B) has been shown to induce protection against experimental dental caries. This protection presumably results from continuous secretion of salivary antibody to GBP-B, which inhibits accumulation of S. mutans within the oral biofilm. The purpose of this study was to explore the influe
American Society for Microbiology.
-
8. Disorders of B cells and helper T cells in the pathogenesis of the immunoglobulin deficiency of patients with ataxia telangiectasia.
The pathogenesis of the immunoglobulin deficiency of 20 patients with ataxia telangiectasia was studied using an in vitro immunoglobulin biosynthesis system. 10 patients had no detectable IgA in their serum as assessed by radial diffusion in agar and 3 had a reduced serum IgA concentration. The peripheral blood mononuclear cells of 17 of the patients and 17