Stellarium is a free open source software project that makes your computer a virtual planetarium. Students can use the program to find the positions of the Sun and Moon, planets and stars. With the program they can show how the sky would look to an observer depending on their location and the time. The program can also draw the constellations and simulate astronomical phenomena such as meteor showers, and solar or lunar eclipses as directed by students. Different locations can be found using latitude and longitude or searching for nearby cities and towns. In addition, time and date can be set forward or backward. The software has a wikipage with a user guide and many other resources that can be found here http://stellarium.org/wiki/index.php/Main_Page In addition, an introductory video, a quick key page and classroom challenges can be found on this AIMS blog entry http://blog.aimsedu.org/2013/07/24/stellarium-a-free-planetarium-for-your-science-classroom/