I am a mathematics teacher holding a permanent position at the [i]IES La Vega de San José[/i] (Las Palmas de Gran Canaria, Spain), and Coordinator of the [i]Instituto GeoGebra de Canarias[/i] (IGCan). I also do some research in Real Algebraic Geometry, studying images of polynomial and regular maps. I am currently in charge of the section "Mundo GeoGebra" of the journal "Números", which aims to make aware to the teacher's community of the software GeoGebra. The IGCan depends on the [i]Sociedad Canaria de Profesores de Matemáticas Isaac Newton[/i] (www.sinewton.org), and its official site can be reached at the following address: [url]http://www.sinewton.es/igcan/[/url]