NASA
On Target
NASA's LCROSS mission is dropping a probe into a lunar crater. Groups design a system to travel down a zip line and drop a marble onto a target in the classroom. The groups then modify their designs based upon testing.
NASA
Nasa Space Science Data Archive: Lunar Exploration Timeline
Available in both HTML and Shockwave formats, this site is a visual timeline of US, Soviet, and Japanese Lunar exploration. Each point of the timeline links to text information about that spacecraft and mission.