Install two more Drupal 8 instances. One in the subdomain gamerz. You’ll use it to build a student org site.
Install the other Drupal instance in the subdomain contenttypes. (Or cowbooks, whatevs, it doesn’t matter, as long as you remember it.) You’ll do exercises with this Drupal.
Submit the URLs of both sites.
(If you were logged in as a student, you could submit an exercise solution, and get some feedback.)