GeoGebra

GeoGebra is a free interactive mathematical software for education in colleges and universities, it was created by Markus Hohenwarter. GeoGebra  permits to make constructions with points, vectors, segments, lines, conic sections as well as function. You can enter equations and coordinates directly, the user can locate derivatives and integrals of functions, they can then be modified  or dynamically created. The program is divided into two windows and another geometric. Algebraic GeoGebra is a dynamic program for education learning of Mathematics

I think GeoGebra is a program that facilitates the teaching and understanding of mathematics, giving us some options for our ease of working and learning, giving also help to teachers as a teaching and unusual program it can facilitate learning of mathematics and its divisions, and because these features  students can understand everything taught in this rare form. The presentation of Dani and Guille was really good.