There are tons of images available online for educational use. When you use images that you did not create, make sure that you are following copyright guidelines.
You can use Creative Commons image search to find content you can share, use and modify. The Creative Commons image search contains links to images from Google Images, Flickr, Wikimedia Commons, Europeana, and more.
The results displayed in this search portal are not always under a CC license. You should verify that the work is actually under a CC license by following the link. If you are in doubt you should contact the copyright holder directly or try to contact the site where you found the content.
This video is quick overview of the Creative Commons.
You can find WikiMedia Commons Images using Creative Commons Search. You can also check the Featured Images for some of the best ones available.
"Public domain" images are not protected by copyright. The public owns these works, not an individual author or artist. Anyone can use a public domain work without obtaining permission. A couple examples of websites that share images that are in the public domain are listed below. For more information about the public domain click here.
The Digital Public Library of America has some great images that you can use for your research and for your projects.
Title: Examples Of Art Nouveau Design
Link to image
