Kids have a hard time visualizing energy levels. This worksheet will help you teach your students about atomic energy levels. Let them choose the element. Then, they place the protons, neutrons, and electrons onto the proper energy shell. It's fun, quick, and a good tool. Projecting it makes it easy to discuss, or fill out as individuals, group, or a class assignment. It can be used as homework or as a page of a test, as well.