For teachers
http://copyright.iupui.edu/
http://www.utsystem.edu/OGC/IntellectualProperty/cprtindx.htm#top
http://benedict.com/ http://educationworld.com/a_curr/curr280a.shtml

For Kids
http://www.stfrancis.edu/cid/copyrightbay/
http://www.geocities.com/stvdlnrds/etp/scav/
http://www.copyrightkids.org/

For he do's and dont's of Plagiarism:
http://owl.english.purdue.edu/handouts/research/r_plagiar.html#common

Teacher's guide to fair use, etc - A very user friendly site. 
http://home.earthlink.net/~cnew/research.htm

United States Copyright Office - Information for all
http://www.copyright.gov/

A site for teachers with several links
http://ctap1.org/article.php?story=20040412095207718

This is by Kathy Schrock for Nauset Public Schools
http://nausetschools.org/fairuse.htm

This is from PBS - for teachers
http://www.mediafestival.org/downloads.htmlhttp://www.pbs.org/teachersource/copyright/copyright.shtm