This virtual reality site, http://nlvm.usu.edu/en/nav/vm3_asid_131.html, is a great tool to use for incorporating technology into the mathematics classroom. If you want to show your students what tetrahedrons, cubes, octahedrons, dodecahedrons and icosahedrons really look like, this "virtual platonic solids application" will be a great addition into your lesson. The application is provided by Utah State University. It will let the student select which platonic solid he or she wants. Then, the student can apply a color and using the mouse, rotate the solid in 3D. He or she may change the size of it using a slider and can also change the way it appears using different "skins" including filled solid or wire frame solid. It is also possible to see it as a dual solid with one inside the other.