NBC Learn has a bunch of free online educational videos, such as word roots and documentaries.  Now, with the NSF, they also have a set of videos all about the winter olympic games!  The science of snowboarding, hockey, figure skating, and more!  I took a look and was favorably impressed — they’re about 5 minutes long, well produced and give a variety of explanations.  They’re mostly physics related, it appears, and would be great supplements to a high school or college physics class.  And the science of snowboarding has a great visual demonstration from my old mentor, Paul Doherty (but he’s not snowboarding!)

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