Silvia Bernardis y Susana Moriena
Abstract: The aim of this article is to present a proposal to introduce students in geometrical demonstrations. We describe a number of tasks around a problem, to work with students in an environment of dynamic geometry. To do this we follow the guidance model of Van Hiele geometric reasoning. The sequence is given to students in their final years of secondary school (15-17 years) and the first year of upper level. Thought this previous work, taking into account other functions of proof as a tool of discovery or explanation, should be used to introduce the show as a meaningful activity for our students in this grade level.
Keywords: exploration, conjecture, explanation, communication, proof.
