It’s getting harder to remember what my final years as an undergrad were like, but I can just about remember this. We had lectures in blocks, usually of 5, which ran in a series, one after the other. Each course involved a lecturer rolling in and giving their best for 5 lectures. The style was what we now consider passive, that’s not to say they were bad. Ones I remember most were those involving demonstrations (from my future PhD supervisor), and the ones with brilliant and passionate explanations from my lecturer on quantum chemistry, who really wanted us to understand….