Resumen de Enhancing reflection on the critical attributes of the figures: The height challenge game
Cristina Sabena, Carlotta Soldano
Geometrical concepts are characterized by the intertwining of theoretical and perceptual aspects, where examples play a crucial role from an educational perspective. We focus on the concept of height of triangles and propose an inquirygame activity within GeoGebra, with the goal of prompting students to consider nonprototypical cases of triangles and enhancing their reflection on the critical attributes of this concept. After outlining a theoretical framework on the role of examples in geometrical reasoning, we present the Height Challenge Game and report some excerpt from a grade 7 classroom discussion. An emerging model for the role of different kind of figures at play in the game is proposed.
