Two things to keep in mind when preparing or delivering teaching

It took me longer than I care to admit to realise this, maybe I can save you some time.
xkcd
teaching
Author
Published

23 November, 2025

Doi

There are two things I try to keep in mind when preparing or delivering teaching. Helpfully, they are both described in xkcd comics.

Ten Thousand

Average Familiarity

The first comic (Ten Thousand) is a reminder that, as teachers, we are privileged to teach a topic we know well to people who are new to it. To me, this suggests two things for us to do:

The second comic (Average Familiarity) helps me remember that what I have seen labeled the “expert’s curse” is real. It is important not to assume that what is obvious to us is obvious to students, for this reason, providing scaffolding is particularly important. The real difficulty is that we find ourselves in front of heterogenous audiences, and scaffolding necessary for some is boring repetition for others. Sometimes we can mitigate this, for example by having the scaffolding as preparatory material that students can review before class if they need it. Other times, it implies a trade-off: one has to choose a primary audience, and accept that people that are not part of our primary audience might find us difficult to follow (or feel we are blabbing on about things obvious to them for way longer than they can bear).

I find that thinking about teaching in this way helps me find the right approach when developing material and avoid pitching way off for my audience. Overall, I feel very lucky to get to guide students in discovering something that I think is worth knowing and can genuinely help them. Despite all of that, I still sometimes find myself assuming too much knowledge on the part of the students and having to adjust from one session to the next. This is also why I always find prepping a new course challenging as it is only with the feedback from the students during and after delivery that I know if I have hit the mark. The first time giving a course is always a bit of an experiment. Only after the first year of teaching a new course am I in possession of enough information to make the delivery of that course successful.

Citation

BibTeX citation:
@online{vernet2025,
  author = {Vernet, Antoine},
  title = {Two Things to Keep in Mind When Preparing or Delivering
    Teaching},
  date = {2025-11-23},
  url = {https://www.antoinevernet.com/blog/2025/11/two_principles/},
  doi = {10.59350/ax7zz-3ae40},
  langid = {en}
}
For attribution, please cite this work as:
Vernet, A. 2025, November 23. Two things to keep in mind when preparing or delivering teaching. https://doi.org/10.59350/ax7zz-3ae40.