More on Khan Academy

Here’s Wired on the innovative work of Salman Khan:

Khan Academy is an educational website that, as its tagline puts it, aims to let anyone “learn almost anything—for free.” Students, or anyone interested enough to surf by, can watch some 2,400 videos in which the site’s founder, Salman Khan, chattily discusses principles of math, science, and economics (with a smattering of social science topics thrown in). The videos are decidedly lo-fi, even crude: Generally seven to 14 minutes long, they consist of a voice-over by Khan describing a mathematical concept or explaining how to solve a problem while his hand-scribbled formulas and diagrams appear onscreen. Like the Wizard of Oz, Khan never steps from behind the curtain to appear in a video himself; it’s just Khan’s voice and some scrawly equations. In addition to these videos, the website offers software that generates practice problems and rewards good performance with videogame-like badges—for answering a “streak” of questions correctly, say, or mastering a series of algebra levels.

We’ve written before on Khan’s work.  By offering a free, virtual classroom available to anyone with a few minutes and an Internet connection, Khan Academy provides students with easy access to information on their own terms.  And because the lessons are videos, students are free to review again and again, allowing them access to the content as often as needed.  This means that students can move at their own pace, moving ahead when ready or reviewing material where necessary.  Khan Academy stands in stark contrast to the assembly line model of traditional classrooms and represents individualized instruction where students are free to move ahead as they master prerequisite material.  And it appears to be paying off:

Initially, Thordarson thought Khan Academy would merely be a helpful supplement to her normal instruction. But it quickly become far more than that. She’s now on her way to “flipping” the way her class works. This involves replacing some of her lectures with Khan’s videos, which students can watch at home. Then, in class, they focus on working problem sets. The idea is to invert the normal rhythms of school, so that lectures are viewed on the kids’ own time and homework is done at school. It sounds weird, Thordarson admits, but this flipping makes sense when you think about it. It’s when they’re doing homework that students are really grappling with a subject and are most likely to need someone to talk to. And now Thordarson can tell just when this grappling occurs: Khan Academy provides teachers with a dashboard application that lets her see the instant a student gets stuck.

…The result is that Thordarson’s students move at their own pace. Those who are struggling get surgically targeted guidance, while advanced kids like Carpenter rocket far ahead; once they’re answering questions without making mistakes, Khan’s site automatically recommends new topics to move on to. Over half the class is now tackling subjects like algebra and geometric formulas. And even the less precocious kids are improving: Only 3 percent of her students were classified as average or lower in end-of-year tests, down from 13 percent at midyear.

Those results are worth noting.  Khan’s work is inspiring and is likely just the beginning of the work that can be done with virtual classrooms.  We’ve incorporated Khan’s work into our own tools on the Quantile Framework for Mathematics website.  In Math at Home, for example, students can select textbook chapters and lessons and search for supplemental material by which to review their primary lessons.  In many cases, they will find a variety of Khan videos available to help review core skills and concepts.  If you haven’t already, be sure to take a look.

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