On the management (and design) of collaborative and group learning activities, Penn State have an excellent resource, which covers most of the educational issues involved.
If you can read this text, it means you are not experiencing the Plone design at its best.
Plone makes heavy use of CSS, which means it is accessible to any internet browser,
but the design needs a
standards-compliant browser to look like we intended it.
Just so you know ;)