TEACHER-to-TEACHER & STUDENT-to-STUDENT LINKS

Internet Discussion Groups for Educators (and Students) ('E' 'M' 'H')
Teaches you how to subscribe to a discussion group (LISTSERV) and provides a massive listing of education-centered groups. This and the following sites are by EdWeb.
Teacher resources: metalab.unc.edu/edweb/lists.html
For students and teachers also try "USENET Discussion Groups."
Teacher resources: metalab.unc.edu/edweb/usenets.html
Connect your students with students across the globe. Take a look at the Educational Chat Forums for electronic penpals.
Teacher resources: metalab.unc.edu/edweb/chat.html

Math Forum: Teacher2Teacher ('E' 'M' 'M')
"A resource for teachers and parents who have questions about teaching mathematics."
Teacher resources: mathforum.org/t2t/
Math Forum Discussions (many):
Teacher resources: mathforum.org/kb/forumindex.jspa