“When I signed up, I wasn’t a YouTube partner, so I was limited to 10 minutes,” Khan said. While initially it may have been an obstacle, it made him focus, so he couldn’t “talk around the matter” as some teachers tend to do, prompting heads on open textbooks. He found that his students appreciated the short-form style. “Instead of having to watch a 60-minute lecture, they could just jump in and see what ‘cosecant’ means.”

via Education By Disruption: Salman Kahn’s YouTube Revolution | Epicenter | Wired.com.