A TED.com talk by Salman Khan has been getting a lot of publicity recently:
The talk is about the Khan Academy (www.khanacademy.org) which is a relatively new online education site. While some of the coverage on changing education and "flipping the classroom" might be a bit over the top (is asking students to watch a video before they come into class really that different to asking them to read the next chapter of their text book?) the data analytics behind the system looks really interesting. You need to get about half way through the video to see it but there are really nice visualisations showing student performance etc (I thought the graph showing the problems with streaming classes was a really powerful example of visualisation).
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