Yeah, definitely teach some openings, but more like a survey of common ones, and nothing in depth (at least as far as moves).
For example after 1.e4 I'd introduce maybe 6 or 8 openings (Spanish, Italian, Sicilian, Scotch, French, Caro, Pirc) and just show 3-5 moves deep for each. Then for the most common ones (lets say Spanish and Sicilian) I'd show an illustrative GM game.
IMO they should know some names to be able to identify what's going on, but beyond that that instruction should tie the opening to middlegame ideas.
For example make the model sicilian game the dragon variation and talk about how black attacks the queenside while white attacks the kingside.
And then the same for 1.d4 like QGD, QGA, Nimzo, Catalan, Slav, QID, KID and have illustrative game(s) for two different types of QGD games (minority attack in the orthodox structure and then maybe a Cambridge Springs or Catalan type game).
I think you could do ~1 hour for 1.e4 and ~1 hour for 1.d4 this way.
We plan on doing a chess course for getting them on some base level. We have about 16 hours and wonder how do structure the course. For example to include chess openings like the Italian or ...
thanks