Jefferson Lab (last mentioned in the February 16, 2000 Scout Report) is a Department of Energy national laboratory that conducts basic research into the atom's nucleus and whose education office and Web Site offers several on-line activities. The All About Atoms site offers a simple and easy to follow lesson on protons, neutrons, and electrons that includes illustrations and descriptions of each as well as a fun facts section. Users click on the animation and follow through the progressive lesson that will give grade-schoolers a good introduction to the subject. This is one portion of an extensive accumulation of other good teacher resources within the Teachers Resources link.