After inviting my undergraduates to critique this site, I made many changes. The images below are too small to be legible, but placing them side-by-side clearly shows the differences in organization.  Click the images for enlargements (warning: large files).
 

Test version, March 14.

Revision, March 22. This Version: Shorter, more scannable text. More visible text groupings. Graphic is larger, cleaner.