Um estudo de retas do plano e uma abordagem para o ensino médio com o software GeoGebra
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Data
2016-02-17
Autores
Fernandes, Franciéli Pereira [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
No presente trabalho é apresentado um estudo analítico sobre retas no plano, tendo em vista a sua representatividade no significado da Geometria Analítica como um método de abordagem de problemas geométricos. Durante o desenvolvimento desse estudo, é visto que, a partir da escolha de um sistema de coordenadas de um plano, as retas do mesmo podem ser representadas por equações lineares com duas incógnitas e coeficientes reais, e vice-versa. Também são abordados os tópicos: equação reduzida, inclinação, coeficientes angular e linear, e as posições relativas de duas retas. Nas orientações dadas pelo Currículo de Matemática da Secretaria da Educação do Estado de São Paulo (SEE), um estudo das retas, com suas equações, propriedades e aplicações deve ser introduzido no ensino básico, mais precisamente, no início da 3ª Série do Ensino Médio. Baseados nessas orientações e objetivando sempre tornar o processo de ensino-aprendizagem de matemática mais interessante e prazeroso, são propostas e desenvolvidas atividades em sala de informática, para se explorar retas no plano com o auxílio das ferramentas do software GeoGebra.
In the present work, it is presented an analytical study on lines in the plane, bearing in mind its representativeness in the Analytic Geometry meaning as a method of geometrical problems approach. During the development of this study it is seen that, from the selection of a coordinate system of a plane, the lines of the same plane can be represented by linear equations with two unknowns and real coefficients, and vice versa. The following topics are also discussed: reduced equation, inclination, angular and linear coefficients, and the relative positions of two lines. At the guidelines given by the Mathematics Curriculum of São Paulo State Education (SEE), a study of the lines, with their equations, properties and applications should be introduced in basic education, more precisely, at the beginning of the 3rd grade of high school. Based on the guidelines and always aiming to become the mathematic's teaching-learning process more interesting and enjoyable, activities in computer room are proposed and developed, to explore lines in the plane with the support of the GeoGebra software tools.
In the present work, it is presented an analytical study on lines in the plane, bearing in mind its representativeness in the Analytic Geometry meaning as a method of geometrical problems approach. During the development of this study it is seen that, from the selection of a coordinate system of a plane, the lines of the same plane can be represented by linear equations with two unknowns and real coefficients, and vice versa. The following topics are also discussed: reduced equation, inclination, angular and linear coefficients, and the relative positions of two lines. At the guidelines given by the Mathematics Curriculum of São Paulo State Education (SEE), a study of the lines, with their equations, properties and applications should be introduced in basic education, more precisely, at the beginning of the 3rd grade of high school. Based on the guidelines and always aiming to become the mathematic's teaching-learning process more interesting and enjoyable, activities in computer room are proposed and developed, to explore lines in the plane with the support of the GeoGebra software tools.
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Palavras-chave
Matemática (Ensino médio) - Estudo e ensino, Geometria plana - Estudo e ensino, Matemática - Metodologia, Tecnologia educacional, Ensino auxiliado por computador, Lines in the plane, Linear equation with two unknowns, Angular coefficient, GeoGebra