Try to find a Creative Memories Consultant in your area. They put out an
enormous amount of magazines and articles about journaling, including those
aimed at parents and children, which might be able to help you. I believe
you can go on their web-site www.creativememories.com and find your nearest
seller. They've also posted some stories on-line:
http://www.creativememories.com/sharestories2.asp?TopicID=30&GID=0
You might also want to check out The Legacy Project which has a journaling
component:
http://www.legacyproject.org/kits/lifeint.html and other pages, especially
the Activity Kits. I believe they have free pages you can hand out at your
classes.