palordrolap

Check system settings for a keyboard entry / applet. I’m on LMDE Cinnamon and have no idea what the equivalents are on Kubuntu, but over here it’s definitely possible to change/remove the default keyboard assignments and set up custom ones instead.

For example, I have Shift+WWW (the multimedia key that starts a web browser by default) set to start the browser with an alternate profile. I could just as easily set plain old WWW to, say, start a terminal instead, or run that custom command.

The hardest part is knowing what custom command to run to get the desired effect.

Should have gone for something like “Dennis Richie Advanced Computing University Lab Annex.”

Parses weird, but look at that acronym.

Haven’t seen this in the other comments: Coolness factor. If you’re a successfully popular teacher, i.e. “cool”, then your students will likely want to participate in whatever it is you suggest.

However, if they don’t see you as cool, you might have difficulty, and might even put them off the platform. This is not something that can be fixed easily, and trying to be cool is about as uncool as you can get.

(Making it mandatory will work, of course, but how you go about that could determine whether they choose to stay on the platform once you’re done. This was kind of covered by OP talking about Matrix in another comment here.)