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Enseignement et apprentissage de la stéréochimie en terminale D au Bénin : raisonnements des élèves et points de vue des enseignants

Abstract : This work constitutes an inventory of the teaching and learning of the topic stereochemistry, in Benin. It characterizes the students' lines of reasoning and difficulties and some teachers' professional knowledge, content knowledge and pedagogical content knowledge (PCK). The analysed data includes the students' responses to paper-and-pencil questionnaires and interviews with students and teachers. The results show that to resolve stereochemistry problems the students have two types of reasoning, a spatial one and an diagrammatic one, which are often unsuccessful. Some students lead an diagrammatic reasoning due to their mental visualisation difficulties. For some others this reasoning results from a lack of stereochemical knowledge more than from an inability to mentally handle the semiotic representations. The unsuccessful spatial lines of reasoning may be explained by different various reasons namely a lack of geometrical knowledge, of mental visualization abilities and of sufficient stereochemical knowledge. Knowledge of students understanding of stereochemistry and knowledge of teaching strategies are key components of PCK which are thus characterised by the skill to identify the students' difficulties, to ascribe a cause to them and to propose a relevant strategy to overcome them. The interviewed teachers did not reach this level of knowledge and thinking about the teaching of stereochemistry because of a limited knowledge of the basic stereochemical concepts.
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https://tel.archives-ouvertes.fr/tel-01010548
Contributor : Destin Mangane <>
Submitted on : Thursday, June 26, 2014 - 4:45:41 PM
Last modification on : Friday, October 16, 2020 - 1:47:02 PM
Long-term archiving on: : Friday, September 26, 2014 - 10:45:13 AM

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  • HAL Id : tel-01010548, version 1

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Destin Mangane. Enseignement et apprentissage de la stéréochimie en terminale D au Bénin : raisonnements des élèves et points de vue des enseignants. Education. Université Paris-Diderot - Paris VII, 2014. Français. ⟨tel-01010548⟩

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