GeoGebra 6.0.659.0

Geogebra is an open source application designed specifically for the learning and teaching of geometry, algebra, and calculus classes. The program
allows you to comfortably navigate an attractive online environment. You just have to select the figure you need and type in the parameters for the problem you're trying to solve. The application includes a dynamic calculus tool that can modify the representation of the graph in real time, as you change the values. This is a very useful tool for the academic setting, whether it be for students or for the demonstrations teachers use in front of the class.