On the first day of a new class, as well as the first days of subsequent weeks or sessions, the instructor tends to kick things off with a well-defined craft lecture presented in the written format of an article or essay. That's what you would typically find within this space.
This teaching content remains available for your review well after active assignment deadlines are past and even long after the class, as a whole, ends.
In an actual class, there would be a well-organized lecture or craft essay, probably reaching or exceeding 1,000 words, within this space. Occasionally, this material might be augmented with images or video links, but most of our classes primarily use writing to teach writing.
The student is always free to ask clarifying questions within the comments field below.