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Previous issue date: 2007-04-24 === In this work, the didactical possibilities of investigation use in classroom, through an experience with high school students from Federal Center of Technological Education of Para?ba, as well as the study of conic sections were analysed. In order to fulfill our goals the theoretical conceptions concerning the
meaninful learning in conection with the investigation of mathematics history were taken into account. The classroom research occurred by means of activities which encouraged the learner to investigate his own concepts on the conic sections. The results of the proposed activities showed the effectiveness and the efficiency of such a methodology as regards the making up of the required knowledge. They
also reveal that the investigation in the classroom guides the ones involved, in this process, to have a wider look at the origins, the methods used and the several representations presented by mathematics that certainly lead, specially the
students, to a meaninful learning === Neste trabalho, analisamos as possibilidades did?ticas de uso da investiga??o em sala de aula, a partir de uma experi?ncia com estudantes do ensino m?dio no Centro Federal de Educa??o Tecnol?gica da Para?ba CEFET PB, na qual abordamos o estudo das sec??es c?nicas. Para o alcance dos
nossos objetivos tomamos como aporte te?rico as concep??es referentes ? aprendizagem significativa em conex?o com a investiga??o em hist?ria da matem?tica. A pesquisa em sala de aula efetivou-se atrav?s de atividades que instigaram, no aprendiz, o desejo de investigar os conceitos pr?prios das sec??es c?nicas. Os resultados das atividades propostas e postas em pr?tica mostraram a
efic?cia e a efici?ncia de tal metodologia na constru??o do conhecimento requerido, nos mostrando que a investiga??o em sala de aula conduz os envolvidos, nesse processo, a olhar de forma mais globalizante para as origens e
os m?todos utilizados para desenvolver, al?m das v?rias representa??es apresentadas pela matem?tica, o que, certamente conduz, principalmente os alunos, a uma aprendizagem significativa
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