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. 

This downloadable article addresses all aspects of nuclear energy. Visual charts make understanding of cycles and concepts easier. Most useful for older students and educators. PDF (requires Adobe Reader).

Information about the element, Thorium, atomic number 90. Covers physical properties, atomic properties, how abundant it is on the Earth, where it is found, and details about health-related regulations. Discusses thorium's potential use...