Conceptions des élèves en classe de troisième sur le concept de réaction Chimiqu

Abstract

This work aims to identify and analyze the conceptions of Cameroonian students (13-16 years old) in the third class when teaching / learning the concept of chemical reaction such as chemical and physical transformation. First of all, we delimited the context and the problem of the study, made a review of the literature, made a historical and epistemological study of this concept ; then we developed a conceptual framework dealing with learning difficulties about the chemical concept under study. Then, we ran a questionnaire test with 50 students to collect these ideas. The difficulties that students experience in learning concepts to epistemological, didactic obstacles and heuristic application.