> Thinking of enlightening questions is often quite difficult. And this is a big piece of the problem with homework. Enlightening questions could be asked as h

> Thinking of enlightening questions is often quite difficult. And this is a big piece of the problem with homework. Enlightening questions could be asked as homework, but various forces create an emphasis on quantity over quality. As someone who's taught arithmetic to lots of adults, I use 'enlightening' in a broad sense. I hope most of us agree that grasping arithmetic requires practice (in or out of class), but that's not the same as repetition. Even simple arithmetic problems can be varied in deliberate ways that draw students' attention to those variations and at the same time reinforce the underlying pattern.