Classes really just one night?

Many years ago I taught at Michaels and it was always a two week course. Just getting ready to start up our classes at our store again and I'm wondering how you are dealing with having to teach this in one night?

I guess I see the first class should be more than 2.5 hours since there is suppose to be a field trip to the yarn dept. discussion on types of yarns and weight etc and then actually teaching them how to tie a slip knot and then onto the single crochet.

How do you do all that in 2.5 hours?

Theresa