Speaking of Bill Gates, his favorite teacher, Salman Khan of the Khan Academy, spoke at TED recently – check out his brilliant presentation at: www.ted.com/talks/salman_khan_let_s_use_video_to_reinvent_education.html. Here's background on him:

Salman Khan talks about how and why he created the remarkable Khan Academy, a carefully structured series of educational videos offering complete curricula in math and, now, other subjects. He shows the power of interactive exercises, and calls for teachers to consider flipping the traditional classroom script -- give students video lectures to watch at home, and do "homework" in the classroom with the teacher available to help.

Speakers Salman Khan: Educator

In 2004, Salman Khan, a hedge fund analyst, began posting math tutorials on YouTube. Six years later, he has posted more than 2.000 tutorials, which are viewed nearly 100,000 times around the world each day.

Why you should listen to him:

Salman Khan is the founder and faculty of the Khan Academy (www.khanacademy.org)-- a not-for-profit organization with the mission of providing a free world-class education to anyone, anywhere. It now consists of self-paced software and, with over 1 million unique students per month, the most-used educational video repository on the Internet (over 30 million lessons delivered to-date). All 2000+ video tutorials, covering everything from basic addition to advanced calculus, physics, chemistry and biology, have been made by Salman.

Prior to the Khan Academy, Salman was a senior analyst at a hedge fund and had also worked in technology and venture capital. He holds an MBA from Harvard Business School, an M.Eng and B.S. in electrical engineering and computer science from MIT, and a B.S. in mathematics from MIT.

Also, check out this web site (www.khanacademy.org) and this Fortune article from last summer:

Sal Khan, you can count Bill Gates as your newest fan. Gates is a voracious consumer of online education. This past spring a colleague at his small think tank, bgC3, e-mailed him about the nonprofit khanacademy.org, a vast digital trove of free mini-lectures all narrated by Khan, an ebullient, articulate Harvard MBA and former hedge fund manager. Gates replied within minutes. "This guy is amazing," he wrote. "It is awesome how much he has done with very little in the way of resources." Gates and his 11-year-old son, Rory, began soaking up videos, from algebra to biology. Then, several weeks ago, at the Aspen Ideas Festival in front of 2,000 people, Gates gave the 33-year-old Khan a shout-out that any entrepreneur would kill for. Ruminating on what he called the "mind-blowing misallocation" of resources away from education, Gates touted the "unbelievable" 10- to 15-minute Khan Academy tutorials "I've been using with my kids." With admiration and surprise, the world's second-richest person noted that Khan "was a hedge fund guy making lots of money." Now, Gates said, "I'd say we've moved about 160 IQ points from the hedge fund category to the teaching-many-people-in-a-leveraged-way category. It was a good day his wife let him quit his job." Khan wasn't even there -- he learned of Gates' praise through a YouTube video. "It was really cool," Khan says.

In an undistinguished ranch house off the main freeway of Silicon Valley, in a converted walk-in closet filled with a few hundred dollars' worth of video equipment and bookshelves and his toddler's red Elmo underfoot, is the epicenter of the educational earthquake that has captivated Gates and others. It is here that Salman Khan produces online lessons on math, science, and a range of other subjects that have made him a web sensation.

Khan Academy, with Khan as the only teacher, appears on YouTube and elsewhere and is by any measure the most popular educational site on the web. Khan's playlist of 1,630 tutorials (at last count) are now seen an average of 70,000 times a day -- nearly double the student body at Harvard and Stanford combined. Since he began his tutorials in late 2006, Khan Academy has received 18 million page views worldwide, including from the Gates progeny. Most page views come from the U.S., followed by Canada, England, Australia, and India. In any given month, Khan says, he's reached about 200,000 students. "There's no reason it shouldn't be 20 million."

His low-tech, conversational tutorials -- Khan's face never appears, and viewers see only his unadorned step-by-step doodles and diagrams on an electronic blackboard -- are more than merely another example of viral media distributed at negligible cost to the universe. Khan Academy holds the promise of a virtual school: an educational transformation that de-emphasizes classrooms, campus and administrative infrastructure, and even brand-name instructors.

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