Resumen: En los últimos años se ha reconocido la importancia de la argumentación escolar en las asignaturas de ciencias, siendo el modelo de argumentación de Toulmin uno de los más aceptados. En la presente investigación, enmarcada en el Aprendizaje Basado en Problemas, (ABP) sobre el tema de minerales con alumnos de química del bachillerato mexicano, se introduce una nueva herramienta denominada Diagrama Heurístico que facilita adquirir la competencia argumentativa.Palabras clave: Ensino de ciencias. Argumentación. Diagrama heurístico. ABP. Ensino de química. Toulmin.
Abstract:In recent years the importance of argumentation in school science has been recognized, the Toulmin model of argumentation being one of the most accepted. In the present investigation, framed by the Problem-Based Learning (PBL) on the theme of minerals with high school chemistry students from Mexico, we introduce a new tool called the Heuristic Diagram that facilitates the acquisition of the argumentative competence.
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