The students in Whelan’s class are all using the same program, called ALEKS. But peek over their shoulders and you’ll see that each student is working on a different sort of problem. A young woman near the corner of the room is plugging her way through a basic linear equation. The young man to her left is trying to wrap his mind around a story problem involving fractions. Nearby, a more advanced student is simplifying equations that involve both variables and fractions.

At first glance, each student appears to be at a different point in the course. And that’s true, in one sense. But it’s more accurate to say that the course is literally different for each student.

Source: The Textbook Is Dying. Meet the Artificially Intelligent Software That’s Replacing It.