Use Copyrighted Materials in the Classroom: Use CC-Licensed Works

All Creative Commons licenses require attribution (unless the contributor has waived that requirement), so no matter how or why you use a work, you must always be sure to note the author's name, the URL where you found the work, and the specific license that the work is licensed under.  From the Creative Commons wiki, here are some best practices for attributing CC-licensed works:

• If the work itself contains any copyright notices placed there by the copyright holder, you must leave those notices intact, or reproduce them in a way that is reasonable to the medium in which you are re-publishing the work.
• Cite the author's name, screen name, user identification, etc. It is nice to link that name to the person's profile page, if such a page exists.
• Cite the work's title or name, if such a thing exists. It is nice to link the name or title directly to the original work.
• Cite the specific CC license the work is under, and link to the specific CC license. For example, a CC Attribution would link to http://creativecommons.org/licenses/by/3.0.  Note that embedded CC licenses often include this link.
• If you are making a derivative work or adaptation, in addition to the above, you need to identify that your work is a derivative work i.e., “This is a Finnish translation of the [original work] by [author].” or “Screenplay based on [original work] by [author].”
• It is acceptable to use hyperlinks instead of a full URL when space is a concern.