I thought teachers visiting this course website might be interested to know more about the context and rationale of it, and how this online component of the blended course fits in with the mobile and face-to-face components.
There are two resources that explain this course. The first one is an article published in the professional magazine The English Teaching Professional, issue 71, which is more practical and explains step-by-step how the course was produced. You can read it here on my main website.
I have also written a chapter on this for a British Council publication on Blended Learning.
You are welcome to use the material, modify, and add to it as long as you attribute it to me (see the CC license on the front page). I would be very happy to hear from any teacher who uses the material or anyone who has taught a similar course, or has a comment about this one.