The Technological Renaissance of the 21st Century is allowing teachers and students from all over the world to collaborate online.
Effective Free Tools for Classroom Collaboration:
Wiggio
Google Docs
Dropbox
Google +
Facebook Groups
Wikis
Skype
Other Tools:
Vokle
Moodle
Grouply
Yahoo Groups
Edmodo
Elgg
Twiddla
Posterous Spaces
Whiz IQ
Junto
Enter the Group
Ning
Google Groups
Titan Pad
Zoho
Visit the TESOL Webinars wiki page for more classroom resources.