I am teacher at the Federal Institute of Education, Science and Technology Goiás (Campus Goiânia) and a member of the GeoGebra Institute of Goiás. I have experience in the field of Mathematics and Informatics (Linux), acting on the following topics: Numerical Calculus, Calculus, Algebra, Mathematical Analysis, programming languages (Perl, PHP and Javascript) and Free Software, especially Geogebra and how GeoGebra can help us in the classroom.