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"It's here," she said of technology. "It's not the future."

iPod touch stations where students play educational games that have been downloaded onto the devices.

Older students also are creating presentations on

, he started making short video versions of his tutorials. And then a funny thing happened. His cousins reported that they liked learning from his videos better than from him.

Having a video made it so they could repeat and replay anything that they didn’t understand as many times as necessary. They could refer back to weeks-old lessons without having to feel embarrassed about it. They could learn without another person standing over their shoulder asking, “do you understand yet?”

To date, Khan has posted more than 2,200 talks on everything from basic math to history. Between 100,000 and 200,000 lectures are watched every day.

The Khan Academy's big idea is that all education should be self-driven. Rather than penalizing failure and rewarding test-taking ability (like our current paradigm), education should encourage failure and experimentation but demand mastery

the Los Gatos experiment is showing how students previously thought to be slower or less gifted, in many cases, are simply hung up on core concepts, and once they plow through they can accelerate past other students.

total reevaluation of education.

he used material that captured his students’ interest. He once brought in sales brochures for new cars to teach a lesson on reading comprehension.