A new tool called Geogebra has been helping students in graphing their Mathematical equations.  This great tool has been suggested by Edoardo Montefusco and has drawn most people's attention. 

GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching. It is a software for all levels of education that joins arithmetic, geometry, algebra and calculus. It offers multiple representations of objects in its graphics, algebra, and spreadsheet views that are all dynamically linked.

 

The concept of GeoGebra is to connect geometric, algebraic, and numeric representations in an interactive way. You can create constructions with points, vectors, lines, conic sections as well as functions, and change them dynamically afterwards. Furthermore, using GeoGebra you can directly enter and manipulate equations and coordinates. Thus, it is easy to plot functions, work with sliders to investigate parameters, find symbolic derivatives, and use powerful commands like Root or Sequence. 

Recently, Ernie Ghiglione has added a sequece in LAMS that illustrates how to use Geogebra.  In this sequence, the teachers ask the students to draw their equations using Geogebra and then submit their graph for marking.  This new Geogebra sequence in LAMS greatly aids students in graphing their equations and gives them additional knowledge especially in the field of Algebra, Geometry, and even Calculus.

Check out the sequence here.