Workshop

Yeah, the in-built examples feature requires some explanations and instructions given in advance to students on how to work with them effectively.

You can use a stand-alone workshop instance where students can experience the whole workshop workflow. The only thing is that in workshop, every user can submit no more than one submission. So if you want to provide more "examplary" submissions and let students to assess them, you will need multiple "dummy" accounts acting as those submissions' authors.

You may want to talk to your Moodle administrators to ask them for several "Demo Student" account for this purpose.