Alunos que completaram um curso de extensão em álgebra linear e suas concepções sobre base de um espaço vetorial

Abstract

The purpose of this study was to indentify the basis conception of the IR vetorial space finitely generated by students who concluded an extension course in Linear Algebra. The relevance of the research is in the importance attributed to this discipline in the professional education of Exact Sciences and others, and in the need to investigate its teaching and its learning, according to the opinion of many researchers, as Dubinsky (1991;2001); Dorier et al (1997); Machado e Bianchini (2009). For such, the theoretical ground used was APOS, developed by Dubinsky and collaborators that allowed the refinement of a genetical decomposition for the notion of basis which approached three points of view from this notion: maximal group of vectorials linearly independent; minimal group of generating vectors and justaposition between the two latters. The data survey was held by semistructured interviews to 10 subjects graduating from the same extension course, characterizing it as a qualitative case study. The analysis held indicates that five students built an object conception and incorporated the notion of dimension to their scheme, using indistincvely the dimension to one of three notions of basis. A student was able to build a process conception and another, an action conception. After two courses of Linear Algebra, the studens conceived basis, mainly, with being the independent linearly generating group, and only two of the interviewed perceived the equivalence among the points of view approached