What can I do to save energy?
How can recycling save energy?
These are the topics addressed at the Energy Kids Page, hosted by the U.S. Department of Energy.
The site has several PDF downloads, among them - Energy Efficiency and Conservation- with versions for both middle school and high school. These discuss theconcepts of energy conservation and consumption, and energy sustainability. The site also links to several other great web sites that teach and discuss energy conservation.