http://www.uwex.edu/ics/stream/uwc-rock/hp/Part of a nice HP Webinar Series. I've been reading and studying Mr. Vanides and his efforts for a while, and I encourage you to google his blogs and such.
Dr. Ralston, you may also be interested in this. Of note are their series on Engineering and Ink Mobility, and Ink in Mathematics. Haven't watched them all yet, but they seem possibly useful.
(Assuming your on the list now.)
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-Travis C. Cook
Director of Administration, Speed School Student Council
University of Louisville