The world's oldest encyclopedia digitized for the 21st century! In addition to reference articles, it also contains primary sources, journal articles, ebook content, images and video, and links to reliable websites.
It's easy to find images on the internet, but that doesn't mean that you can freely use any image you find. In many cases, that use violates the rights of the creator or owner of the image.
You may freely use images from any of the databases above or from Britannica ImageQuest below in your project.
NOTE: images must be cited just like the other resources, but at the bottom of the slide on which they appear.