TED--do it yourself White Board

I learned about TED from Judy and have been enjoying watching some of the lectures. Today, an SCSU faculty member sent an e-mail about the Wiki he uses in his class. I checked that out and saw a link to a TED lecture and since I was familiar I thought I would check it out.

Some of you talked about white boards in the classroom. Some said they have one but don't know how to use it, others use it, and others want one but can't afford it. For the latter, here's the solution. This is fascinating.

http://www.youtube.com/watch?v=0H1zrLZwPjQ