When I first read points 1 and 2 on this page, I thought it was a reference to the discussion forum that was set up for the course, which didn't make an awful lot of sense. I know that use of the Discussion Tab/Talk Pages feature is covered in greater detail in another unit, but it might be a good idea to introduce the facility here to avoid confusion.
Ed, you're right I can see that this can be confusing. Let me take a look and see if we can tighten up the language to avoide the ambiguity.
How about copying the text and image from Unit 8, which I think is very clear and straightforward, viz.:
The discussion tab (sometimes called the Talk Page) is an essential part of the WikiEducator environment and can be found at the top of every page. Every content page in WikiEducator has a corresponding discussion page. This space can be used to leave notes or start discussions about the page you are viewing. Talk pages provide a space for editors to discuss changes and make suggestions about the associated page. The talk page is the same as any page on the wiki and accepts all the wiki syntax and editing that other pages do.
When you raise this issue in Unit 8, you can introduce it with a phrase something like this:
In the previous unit/tutorial, we introduced the discussion feature. You will recall that . . .
Just a suggestion.