Using photos in your presentations is much more effective for learning than displaying your speaker notes. Here are a few photo websites you can use to gather copyright-free photos. Be sure to follow the guidelines for attributing ownership of the images. Not only is it the right thing to do, it is great modeling for students to see how to legally use other people’s artwork, especially after they have graduated. And of course, your own camera is also free for you to use – no attribution needed!