Say, for example, a word problem, or a proof. You often need more than one sheet of paper for a problem, but if you're using a notebook, it becomes painful to try to concentrate on what you're doing while also flipping back to the previous page to look at something you need.
If you work the problems on separate detached sheets, you have more flexibility, but you end up with separate detached sheets :).
A computerized tablet interface could solve all these problems and automatically organize the finished work for you. But it would have to not SCREW UP all the symbols you'd be writing.
Has anyone here successfully used Pencil or any other stylus/tablet combination for doing math?