Adding a comment to a GoogleDoc with a plus followed by an email address sends a question from the GoogleDoc to someone directly via email (either in the doc or out of the doc). This can be used to bring a student back into the discussion by emailing them directly and having them respond directly to text within the doc.

In the images below, you’ll see my test comment to another of my emails (not a member of the doc) and below it my response via email.

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