La gestión del profesor en el aula. El caso del número relativo.
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This research aims to analyze didactical practices which the teacher does by managing a study process related with the construction of the relative number concept, developed from qualitative research methodology, executed from the active type qualitative research methodology based on a case study (6th grade students, Colegio Parroquial Santa Isabel de Hungría). Shows tools from Onto semiotic Approach, Semiotic Perspective, and Didactical Tetrahedron. The used tools correspond to a sequence of activities adapted to DECA-Brousseau model: Sudent’s portfolio, observer protocols, teacher protocols, session records. Will be analyzed from ACC, AST and TFD techniques. The present works aims to contribute with some elements which allow characterizing the teacher’s management via text semiotic analysis.