"Copyright is a legal concept, enacted by most governments, giving the creator of an original work exclusive rights to it, usually for a limited time. Generally, it is "the right to copy", but also gives the copyright holder the right to be credited for the work, to determine who may adapt the work to other forms, who may perform the work, who may financially benefit from it, and other related rights. It is a form of intellectual property..." -Wikipedia

Websites and Blog Postings
Be Copyright Cool a step by step guide for students. Powerpoint
Copyright and Creative Commons in Plain English by Common Craft Blog posting containing a slideshow (may be viewed for free but not downloaded without purchase), by Richard Byrne
Copyright for Students by Cyberbee. Interactive website.
Copyright Kids! FAQs and resources concerning copyright and fair use, by the Copyright Society of the U.S.A.
Educator's Guide to Copyright, Fair Use, and Creative Commons explanation, examples, and resources, by Ronnie Burt on The Edublogger
Penrose's Patent and the Battle of the Tissue Tiles Sir Roger Penrose sued Kimberly Clark, Ltd (and won!) when he saw his patented tiling used as a toilet paper pattern
Taking the Mystery Out of Copyright interactive site from the Library of Congress (plain text version available). Searchable by Common Core and State Standards.

Two Examples of Copyright Infringement
A Copyright Tale blog posting by Alec Couros
Intellectual Property...and Passion blog posting by Diane Cordell

Choose a License An explanation of the various types of Creative Commons licenses
Copyright Genie Step-by-step guide to help answer copyright questions, by Michael Brewer & the ALA Office for Information Technology Policy
Digital Slider Determining copyright for works published in the United States, by Michael Brewer & the ALA Office for Information Technology Policy

Videos and SlideShares:

Copyright, What's Copyright?

Copyright: Forever Less One Day