In my courses I provide a expectations document and announcement that includes how to participate in discussion board assignments and how to work in groups. I also provide tips as comments to each assignment. For the discussion boards I remind them that online discussions do not offer the advantage of face-to-face communications where facial expressions and body language can be observed. It is sometimes difficult to gauge someone's intent, or to even recognize humor, so I recommend that they not react if they feel critized or disrespected, and not to "flame" other students. I also remind them that they can respond to others by expanding on a point, asking questions, relating a personal experience that illustrates a principle, or even challenge a point that has been made, albeit diplomatically. For the groups I advise that there should be a leader and they are all invited to provide me with their evaluation of member contributions. I also provide suggestions as to how to proceed with each project, suggested timelines and always offer my assistance when needed.