One of my favorite ways to use the commenting feature in Google Documents is to host online discussions around a shared article. Doing this isn’t a radical departure from having a classroom discussion about an article that you’ve printed and distributed to your students, but there are some advantages to hosting your discussion in Google Documents. The first advantage is that your students can participate in the discussion from anywhere at any time they are connected to the Internet. Students absent from your classroom can still participate and can read others’ comments. The second advantage is that your students can have a digital archive of the ideas shared by you and their classmates.