Reshot is another source of royalty free images you can use in the classroom
Source: Reshot: Uniquely Free Photos
I’ve written about Unsplash before, and while their pictures are really nice, they can be overused. There have been times when I’ve seen the same shot on several different websites. Reshot is another source of images. The pictures are released under a very permissive, they can be used for non-commercial or commercial purposes, without attribution (although that’s nice to add). There are no where near as many pictures as Unsplash, so you’ll want to keep both in mind when looking for pictures.