Abstract The Van Hiele model of geometric reasoning establishes five levels of
development, from level 1 (visual) to level 5 (rigor). Despite the fact that this model has been …

The primary goal of advanced mathematics courses is to equip students with proof skills.
That is why the competence of pre-service mathematics teachers in proof is considered an …

This study examines how undergraduate Computer Engineering students at a large Spanish
university use and formulate definitions in graph theory. The primary objective is to …

This article presents a reflection on a teaching experience involving the use of the Brügner
tangram, an interesting but little-known manipulative material. It details an activity conducted …

Introducción: La geometría es uno de los campos menos analizados en la educación
matemática, siendo causantes la falta de conocimiento de procesos y contenidos, y una …