This morning on YouTube I stumbled across some science videos posted by a middle school teacher in Colorado. Chris Bergmann has posted a number of videos of science demonstrations that he's done in his classroom. Watch the "Elephant Toothpaste" demonstration below.
Find more videos on Mr. Bergmann's YouTube channel and on his wiki.
Applications for Education
Not only could these videos be useful to show to students in lessons, they could also be useful for finding demonstrations to use in your own classroom. As teachers we often say that we get our best ideas from each other, Mr. Bergmann's videos are a demonstration of teachers sharing.