If the answer to any of the questions below is yes, then it is permissible to use the material in a classroom setting.

Is the content in the public domain?
Ex: Goverment Docs. or Pre-1923 Docs.
Public Domain Guide

If No,        

Do you hold the copyright?
Not just being the author.
Copyright Guide (Section 1B)

If No,        

Does the library provide access to or own the content?
Library Guide

If No,        

Do you have written permission to use the content?

If No,        

Is it Fair Use?
Fair Use Checklist

If the answer to all of the above questions was no, you can pursue one of the four following options:

Obtain permission
Guide to Seeking Permission

or          

Create a Course Pack and Pay Royalties
Contact Dan Edes

or         

Pay Royalties for a Single Article
Copyright Clearance Center

or         

Do Not Use