Read, Write, Think has a number of resources for teachers, including graphic organizers that allow students to think about their writing by mapping it. Here's a bit from Read, Write, Think on these maps.
Recently revised, three online interactive graphic organizers help students map out their writing ideas or organize information they have learned. Students can now begin their research, fill in parts of their map, save, and then return later to continue working. Finished maps can still be printed but can also be saved and e-mailed.
Try the new save capability with your students using any one of these interactive mapping tools.
To learn more, click the above hyperlinked text.