Answers are what we are trying to get at; search is a process by which you may be able to get answers, but it's not the end goal. It's a mechanism.

Maths is fundamentally a different process in education than it is in the real world. There is an insistence that we do maths by hand when most of it is done by computers. The idea that you have to do everything by hand before you can operate a computer is nonsense.

Every math curriculum in the world is based on the idea of hand-calculating, and most of what you're teaching is how to calculate. And I think the resistance to this is very variable.

I couldn't tell you in any detail how my computer works. I use it with a layer of automation.

You don't lose weight by watching someone else exercise. You don't learn by watching someone else solve problems. It became clear to me that the only way to do online learning effectively is to have students solve problems.

When I write, I'm still imagining a kid reading it on paper. I read e-books when I travel, but in general I still prefer holding an old-fashioned book in my hands. There's a special, tactile experience.

You go to college not only for the latest knowledge but also to meet people from different backgrounds. That's the genius of the American higher-education system compared with the Europeans'. We don't simply skim the elite.

As women slowly gain power, their values and priorities are reshaping the agenda. A multitude of studies show that when women control the family funds, they generally spend more on health, nutrition, and education - and less on alcohol and cigarettes.