Proof; Justification; Mathematical validation process; Levels and type of proof; ACODESA

• Main Authors: Álvaro Sebastián Bustos Rubilar, Gonzalo Zubieta Badillo
• Format: Article
• Language: Spanish
• Published: Universitat Autonoma de Barcelona 2019-11-01
• Series: Enseñanza de las Ciencias
• Subjects: demostración; justificación; proceso de validación matemática; niveles y tipos de prueba; acodesa
• Online Access: https://ensciencias.uab.es/article/view/2506

In this article we report how an approach was promoted from the pre-formal to the formal stage regarding the students’ way of justifying mathematical reasoning. We implemented an activity based on the ACODESA teaching method to create a sociocultural environment in the mathematics class and to promote social interactions between the students. We present the case of a learner who changed his way of justifying after exchanging ideas and discussing with peers during the analysis of the justifications generated by each of them.