The Big Three

First, the disclaimer:

More variations on these three key types of asynchronous learning exist than can be covered here.  The distinctions among the Big Three described here are intended to help us reach some common language about them.  Your ideal answer could be a combination of these or something else entirely.

First, keep in mind that “asynchronous” means that the course content is delivered independent from the live availability of an instructor.  These types of courses or lessons are sometimes called “self-paced” for this reason — learners pace themselves through the content.  The format of the course must include everything the learner needs because no instructor is available.

So what are the Big Three asynchronous learning types?