Etude didactique des situations de recherche pour la classe concernant des jeux combinatoires de type Nim

Abstract : This research is included in the project of the research group "Maths à modeler". In particular, in the part that corresponds to the study of "situations de recherche pour la classe" (SiRC). This research is focused in the study of the role played by the mathematical activity, the combinatorial games and particularly the games of Nim-type in learning the fundamental know-hows. We put under the term "fundamental know-hows" all the knowledge, methods and techniques found in all mathematical activity: experimenting, studying particular cases, conjecturing, building examples and counter-examples, modeling, proving, defining, etc. (Grenier et Payan, 2002). The main aim of this research is the construction, the experimentation and the analysis of SiRC based on combinatorial games of Nim-type for students designed to make them build and develop the know-hows required for the implementation of a "mathematical process". Our main problem is then identifying the fundamental and notional know-hows of the mathematical activity that are used in combinatorial games of Nim-type and establishing the epistemological and didactical conditions and constrains that favor the learning of these know-hows in the classroom. To achieve our aim, our research is supported, on one hand, by some aspects of the theory of didactical situation by Brousseau (Brousseau, 2004) and the theory of conceptual fields by Vergnaud (Vergnaud, 1994) and, on the other hand, by the SiRC model, where we also contribute to precise it. We based our research in the epistemological and didactical study of Nim-type games to conduct mathematical and didactical analysis of two SiRC: the first one, called "the geometrical Euclid game", is a situation of Nim-type created specifically for this research and based on the classical Euclid game. The second one, called "the chocolate game", is a situation frequently experimented by the research group math à modeler whose didactical analysis had not been done yet. The analysis and experimentations we have conducted show that the situations based on Nim-type games can lead to a mathematical activity that goes beyond developing and practicing mathematical techniques. They can open access to more general know-hows specific to the mathematical activity.
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Ximena Colipan. Etude didactique des situations de recherche pour la classe concernant des jeux combinatoires de type Nim. Combinatoire [math.CO]. Université de Grenoble, 2014. Français. ⟨NNT : 2014GRENM002⟩. ⟨tel-01679287⟩

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