Hopes that the internet can improve teaching may at last be bearing fruit.
TheE 12-year-olds filing into Courtney Cadwell’s classroom at Egan Junior High in Los Altos, a leafy suburb of Silicon Valley, each take a white MacBook from a trolley, log on to a website called KhanAcademy.org and begin doing maths exercises. They will not get a lecture from Ms Cadwell, because they have already viewed, at home, various lectures as video clips on KhanAcademy (given by Salman Khan, its founder). And Ms Cadwell, logged in as a “coach”, can see exactly who has watched which. This means that class time is now free for something else: one-on-one instruction by Ms Cadwell, or what used to be known as tutoring.
So Ms Cadwell, in her own web browser, pulls up a dashboard where KhanAcademy’s software presents, through the internet, the data the children are producing at that instant. She can view information for the entire class or any individual pupil. Just then she sees two fields, representing modules, turning from green to red, one for Andrea, the other for Asia. Ms Cadwell sees that Andrea is struggling with exponents, Asia with fractions. “Instead of having to guess where my students have gaps, I can see it, at that moment, and I walk over to that one student,” says Ms Cadwell, as she arrives at Asia’s chair.