- http://www.sarasota.k12.fl.us/high/
Gale Library Portal for research and learning.
http://www.refdesk.com/refdsk.html
Everything.
http://www.reference.com/
Well established.
http://www.teachingtips.com/blog/2008/07/07/100-unbelievably-useful-reference-sites-youve-never-heard-of/
Wow. Links to every type of reference site out there.