Made available in DSpace on 2016-06-02T20:02:51Z (GMT). No. of bitstreams: 1 4860.pdf: 5242866 bytes, checksum: 5e92d592a327abbd0f89da2dbf416582 (MD5) Previous issue date: 2012-03-26 / The difficulty of students in learning concepts of mathematics especially at high schools is current problem in Brazilian schools. This difficulty is a challenge even bigger as the different high school systems are considered, for example, the technical professional high schools. Such challenge for two classrooms of first grade (10th grade in K-12) of a technical course in environmental studies motivated the proposal of this dissertation. The research work explored a teaching methodology of the concept of function that would show to the student the importance of this concept in a technical course, while offering an opportunity to know about the mathematics modeling that uses functions, especially those from school curriculum. The final results of this dissertation consisted of working sheets that were planned, executed and evaluated in two classrooms. The worksheets are formatted so that they can be used by teachers who share the same challenge and interest in developing research to improve the teaching/learning mathematics at high - school level. The proposed activities are based on mathematics modeling of problems in the context of the students course, and on the educational use of a graphic calculator to construct tables, graphs and regression curves. The official documents from Ministry of Education (MEC) about curriculum standards and some theoretical references have been used for our reflections about the differences between traditional teaching style and new educational trends, and about the potential of technology to improve the learning. The work presents also a study of the concept of function that supported the planning of the proposed classroom activities. / A dificuldade de aprender conceitos matemáticos principalmente no ensino médio é um problema presente nas escolas brasileiras. Esta dificuldade se apresenta como um desafio maior quando se consideram as diferentes categorias de ensino em nível médio, por exemplo, uma escola técnica profissionalizante. A proposta deste trabalho foi motivada por este desafio para duas turmas do primeiro ano do curso técnico de meio ambiente. A pesquisa deste trabalho consistiu na exploração de uma metodologia de ensino do conceito de função que mostre ao aluno a importância deste conteúdo num curso técnico, oferecendo uma oportunidade de adquirir conhecimento sobre a modelagem matemática de problemas por meio de funções, em especial das funções constantes no currículo escolar. O trabalho apresenta como resultado final as atividades propostas e testadas nas duas turmas, em formato que possam ser utilizadas e aproveitadas por professores que tenham o mesmo desafio e interesse na pesquisa da melhoria de ensino/aprendizagem em nível de ensino médio. As atividades elaboradas se baseiam na metodologia de modelagem matemática aplicada dentro da resolução de problemas contextualizados e no uso auxiliar da calculadora gráfica para construir tabelas, gráficos e expressões por métodos de regressão. O trabalho apresenta um embasamento teórico para a pesquisa realizada, primeiro por meio de documentos oficiais do Ministério da Educação (MEC) que determinam os parâmetros para os conteúdos do currículo escolar, além de bibliografia que permitiu tecer reflexões sobre as diferenças entre o ensino tradicional e tendências modernas, o potencial da tecnologia como auxiliar para melhorar o aprendizado. O trabalho apresenta também um estudo teórico do conteúdo de funções, necessário para fundamentar as atividades de sala de aula realizadas.

The major aims of this paper are to present how we can improve the students understanding and involvement in mathematics by using a programming/graphic calculator. I will use differentials as examples such as differentiation ,integrals and differential equations, creating lines of slopes for differential equation of the type y’= f(x,y) . Find the solution of some differential equations by using regression and create the graph connected to the differential equation. As we have different approaches to solving a problem, it is a hope the students interest in mathematics will improve. The tools used will be programming, graphic commands as plot, f-line, etc. One goal is also to show how we can create small programs solving problems in mathematics. For many students this will be a stepping stone for further work with programming. The programs used can be copied using the program FA 124 that can be downloaded from Casios homepages. On request I can send you the programs.

The major aims of this paper are to present how we can improve the students understanding and involvement in mathematics by using a programming/graphic calculator. I will use differentials as examples such as differentiation ,integrals and differential equations, creating lines of slopes for differential equation of the type y’= f(x,y) . Find the solution of some differential equations by using regression and create the graph connected to the differential equation. As we have different approaches to solving a problem, it is a hope the students interest in mathematics will improve. The tools used will be programming, graphic commands as plot, f-line, etc. One goal is also to show how we can create small programs solving problems in mathematics. For many students this will be a stepping stone for further work with programming. The programs used can be copied using the program FA 124 that can be downloaded from Casios homepages. On request I can send you the programs.