The U.S. Department of Energy provides numerous lesson plans and activities on energy for grades K-12.  Click here to link to lessons on energy efficiency and conservation organized by grade levels, including a lesson “Comparing Light Bulbs.”

A detailed packet explaining energy transmission and comparing the efficiency of CFLs with incandescent bulbs is available in PDF at the NEED Project website.  (To access, please click on the “teachers’ guide” at the bottom of the home page or click here.) 

The Alliance to Save Energy provides "a set of classroom activities that guide children through lessons about different sources of energy, how we use energy at home, and how to bust energy hogs to save energy"  for grade levels 3-8 at their energyhog website.