- http://gelessons.com ~ As the site explains, this is a free public resource that “provides teachers with the tools needed to enhance their instruction using Google Earth, the free program that brings the world to the classroom.”
- www.arkive.org ~ This site lets visitors “explore 15,000 of the world’s endangered species, with over 100,000 photos and videos.”
- www.noredink.com ~ This site helps students improve their writing and grammar skills in a fun way.
