National Geographic Kids
National Geographic Kids: Animals: Mountain Gorillas
A nice multi-media National Geographic site with video and audio clips about mountain gorillas. Fun facts about the gorillas include information ideal for research projects.
Center for Educational Technologies
Exploring the Environment: Mountain Gorillas
Try these learning activities to help understand issues around efforts to preserve an endangered species. Lots of information on the biology of mountain gorillas and the human factors that effect them.
Other
Dfgfi: Learning About Gorillas
This resource provides an excellent overview of gorillas in the wild. Content includes general facts, profiles of specific gorilla groups, numerous photographs, and more.