Collaboration and communication between (even the youngest of students) fosters learning from an interactive point of view. Blogging gives students the opportunity for reflection, writing for an audience and a published piece.
Journey North (tulip project)--can log/view when tulips start to bloom-follow them north
Wikispaces will create student accounts (Help+Teachers) email@example.com
list user names and passwords (don't need email addresses)
Webkinz has opened a world of learning and virtual collaboration. (3 class pets and giving all students user names/passwords)
Eduwiki --to share resources (work smarter, not harder)