That she learnt from a widely known authority in her field of study, which might be of use to some of us who are teaching for the first time (or, planning to):
The key points, which seem obvious in hindsight, are to move slowly and to include the class in the lecture through “active learning” exercises. This means that I will introduce a topic with a few short powerpoint slides. Then I will do a derivation of the key equations on the board. Next, I will work an example that is outlined in their notes, but that they have to fill in with specifics. Finally, they will work a worksheet together in groups on the topic, while I roam the room answering questions. This works really, really well. I also showed a couple of YouTube videos (< 3 min) related to subdivision engineering and that went over pretty well.