Uma proposta para a inserção de problemas de contagem no ensino fundamental

Abstract

This work describes a teacher’s didactic experience, who chose for presenting counting problems in elementary school. It is an investigative work, which the main objective is to analysehowelementaryschoolstudentssolvesimpleproblemsaboutcombinatorialanalysis - not knowing its definitions, concepts and formulas. From this investigation, the teacher proposednewwaystoworkthisthemewithyoungerstudents. Theresearchwasperformed with 9th grade students in elementary school from a public school in Minas Gerais State. Thestudentsperformedtwotypesofactivities: PresentationActivities(problemsituations that presented multiplicative principle, permutation and combination ideas) and Test Activities (four questions from OBMEP - Brazilian Mathematical Olympiad for Public Schools - that covered combinatorial reasoning studied in the presentation activities). The students received guidance in how to perform the activities and the main results are described in this text. At the end of this work there is a reflection about the results obtained with what and how we can improve our proposal and a final activity suggestion.