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 A channel dedicated to sharing wonderful, amazing, and sometimes surprising, characteristics of numbers. Perfect for using as a possible hook in math lessons, or as an FYI for the number-curious amongst us.

"Educational videos, mostly math and physics, from the distance learning classes available at http://www.derekowens.com. These videos are organized at http://www.LucidEducation.com"

"Sketchcasting is a new way to communicate something online by recording a sketch, optionally with your voice speaking. Any sketch can then be embedded on your blog/ homepage for people to play-back, and you can also point people to your sketchcast channel here (or let them subscribe to your sketchcast RSS feed). Sketchcasting is new but it's based on an old principle: the whiteboard (or the napkin in a bar) on which you sketch something to get a concept across... or to just have some fun. "