In online learning it is easy to get distracted by the latest technology. Don’t build your assignments around a tool. Instead, start with the student!
I often find myself talking with people about online discussions and how to best set them up. Instructors, in particular, want to know the key to student engagement and best practices for their own participation. This isn’t something that has a hard and fast answer – you can certainly find plenty of suggestions, but a lot rides on what’s happening in a particular course.