Andrew Fraknoi's and Dennis Schatz's guide, "An Observer's Guide to Viewing the Eclipse," published by the National Science Teachers Association (free download).
Courtesy Professor Patricia Reiff, the Rice Space Institute
Remember to protect your eyes by never looking directly at the sun. Because children like to prove how "strong" they are, I tell them that even if it doesn't hurt immediately, the intense sunlight will damage their eyes inside, and they will later have problems, so never, ever, look directly at the sun. There are special black or aluminized polymer filters or glasses available for sale: see "An Observer's Guide to Viewing the Eclipse"for a list of reliable sources.