GeoGebra is a free and multi-platform dynamic mathematics software for schools that joins geometry, algebra and calculus. As an interactive geometry system, GeoGebra can help you do constructions with points, vectors, segments, lines, conic sections as well as functions and change them dynamically afterwards. Equations and coordinates can also be entered directly. Thus, GeoGebra has the ability to deal with variables for numbers, vectors and points, finds derivatives and integrals of functions and offers commands like Root or Extremum. The software has won multiple awards since 2002, the installation process is simple and quick, and the site also provides example worksheets and other educational material. There is also a link to the GeoGebraWiki, a free pool of teaching material for use with the GeoGebra software.