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Stratégie de résolution d'exercice en mécanique du point matériel

Stratégie des enseignants et difficultés des étudiants de la première année universitaire
Exemple du problème de la machine d'Atwood

Abstract : Our work is centered on the resolution of exercises in the introductory mechanics in first year of university. We are interested in particular in the difficulties of the students, relative to the construction of the resolution's strategies of such exercises ; we try to loosen the helps to be proposed to the students for the particular and traditional problem of the Atwood's Machine.
We compare the resolution of three types of actors, one that we built and that we attributed to a fictitious character named " the expert ", those were proposed by teachers and by students.
An important source of difficulty has for origin the difference between the teachers epistemology and their practices. For the expert and for the teachers, the mechanics appears as a deductive science. But the resolution of this exercise, such as it can be presented to the students supposes to make reference to physical principles that are not known by students. The reference to these principles is hidden.
Only certain students can decode these practices and are capable of building an adapted hypothetico-deductive strategy. The difficulties of the students are partially connected to a not succeeded didactic transposition, and an absence of explicit explication of the epistemological principles on which leans the education.
The help that were proposed to students, allowing to discuss qualitatively the problem or to throw a critical glance on the obtained results, facilitate the construction, by the students, of a hypothetico-deductive strategy. Only those who are capable of executing without too many difficulties the elementary tasks, seem to get benefit from it.
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https://tel.archives-ouvertes.fr/tel-00174030
Contributor : Ahmet Yavuz <>
Submitted on : Friday, September 21, 2007 - 1:06:51 PM
Last modification on : Thursday, November 19, 2020 - 12:59:40 PM
Long-term archiving on: : Thursday, April 8, 2010 - 7:53:28 PM

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Ahmet Yavuz. Stratégie de résolution d'exercice en mécanique du point matériel

Stratégie des enseignants et difficultés des étudiants de la première année universitaire
Exemple du problème de la machine d'Atwood. Physique [physics]. Université Joseph-Fourier - Grenoble I, 2007. Français. ⟨tel-00174030⟩

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