I was a graduate student when I taught my first class, a physics lab. There’s nothing unusual in this; university physics departments often hand labs over to graduate student. It’s a win-win, actually. Departments require teachers, and grad students require experience.
Of course, I didn’t really know what to do, but no worries. I could followa manual describingthe experimentations. In hour, though, my ideas about laboratories changed. It started after a presentation I considered at a conference. I don’t recall the conference or where it was, but I remember the talk. It was about inventions in lab. One of the speakers discussed an “improvement” to the electric fields mapping lab.
This is a common laboratory during second semester physics. The basic notion is to explore the electric field around an electric charge or between two electrically charged plates. It’s not easy to measure the electric field. Instead, youcheat and measure something simpler–conducting paper.