A l’heure actuelle, des didacticiens des diverses disciplines s’interrogent sur les pratiqueslangagières mises en oeuvre pour penser, pour négocier des significations et stabiliser dessavoirs au sein des contextes scolaires (Jaubert, Rebière). Participant à cette recherche enéducation musicale, l’objet de cette étude porte sur l’analyse de « l’outil » langage (oral etécrit), à la fois linguistique et musical, dans l’acquisition des connaissances des élèves del'école et/ou des étudiants pour le professorat des écoles. Il s’inscrit dans une perspectivehistorique et culturelle, qui voit dans le langage un outil de conceptualisation. / At the moment, didacticiens of the diverse disciplines wonders about the linguistic practicesoperated to think, to negotiate meanings and stabilize knowledges within the school contexts(Jaubert, Rebière). Participating in this research in musical education, the object of thisstudy concerns the analysis of " the tool " language (oral and paper), at the same timelinguistic and musical, in the acquisition of the knowledge of the pupils of the school and thestudents for the teaching profession of schools. It joins in a historical and culturalperspective, which sees in the language a tool of conceptualization.

This thesis deals with specific learning disabilities on the first level of primary education. The theoretical part is devoted to the definition of the basic concepts, to the etiology of the occurrence of specific learning disabilities and to the classification of their manifestation. It draws up the possibilities of the diagnostics and of the follow-up re-education. It describes the possibilities of educating students with disabilities at basic schools or individually. The practical part of this thesis focuses on exploring the issue of specific learning disabilities on the first level of primary education, namely, in the third and fourth grade. Three case reports whose results most visibly pointed to a problem are also present here.