http://unrestrictedstock.com/# provides great choices of free and unrestricted photos and vectors. These pics are completely free and can be used for numerous educational purposes. The hand drawn clip art would be useful for any science class. From the home page, there is a choice of several different "collections". Within each "collection" is a set of vector images or photographs. This site is easily navigable and visually appealing. It is 100% free of cost. Images are easy to download and can then be used for projects such as creating an online poster illustrating a recent novel via glogster or for photos on an interactive timeline. The quality of the photos and vectors is excellent. The sky is the limit!

http://www.clker.com/ is a royalty-free, copyright-free web site with unending choices of clip art and photographs just waiting to be used in your classroom! Students can upload their own images to clker.com or even use this site to draw their very own piece of art. The images in this site could easily be used by both teachers and students. Students could use the resources found within Clker.com to create their very own digital story or graphic novel. The site is easily navigable; however, I find the adds to be distracting and the layout could be better.

http://stockphotos.io/education/

This site would be great for any teacher grade k-12. There are approximately 20,000 photos that are royalty free and available for use for any commercial, professional or personal projects. Students and teachers could use these images for multimedia presentations and much more. Photos are of excellent quality and 100% free. If used for commercial reasons, the creators of stockphotos.io ask that credit be given to the authors. This site is great; it is easy to navigate and provides a wide selection of photographs from which to choose.