In my never-ending quest to find educational videos online, I recently discovered Simple Science Videos on Vimeo. I picked this one up on Twitter although I can't remember who posted it. If you're the one, thank you. These videos are produced by Simple Science.net. The aim of each video is to give a clear explanation of science topics that elementary and middle school students can understand. A video about various types of rocks and their uses is embedded below.
3D Rocks Video from Simple Science on Vimeo.
Applications for Education
Simple Science's videos are entertaining and informative videos for introducing a new topic to your students. The collection of videos is also good for independent learning by students. These videos could be included in slide presentation that students may give as part of research assignment.