Google Images allows you to search for images and narrow to a specific reuse permission. This can be a fast easy way to find images for a project. To do this, go to the Tools menu after you run your search, then select Usage Rights.
You have the following options for Usage Rights:
Fair use provides the broadest and most flexible exception to copyright limitations. It is technology-and-format-neutral and can be applied to any medium. A fair use determination requires a good faith analysis of four equally-weighted factors specified in the law. Fair use can be the most challenging and difficult determination to make. The following tools can help you understand the four factors, weigh them, and make an informed decision.
If you are the creator and the copyright owner, great!
If you are posting or publishing photographs you have taken, get the written permission of the subjects. See the language in this sample Media Waiver.
List of Free Stock Image Sites for E-Learning
DPLA, Digital Public Library of America
The riches of America’s libraries, archives, and museums, freely available to the world. Search by Format including Image, Text, Moving Image, Sound and more. Rights, Copyright, Permissions clearly stated for each item.
Library of Congress Prints & Photographs
Copyright and Other Restrictions That Apply to Publication/Distribution of Images:
Assessing the Risk of Using a P&P Image
Images for sale and vintage images free for download