Big mouth
We’ve got to give teachers some credit–a lot of credit, actually. They go to all sorts of lengths to make learning interesting for their students, and they’re usually not given enough credit for that. The professor below is a prime example. While teaching theorems and proofs, he took his lesson to the next level.
Here we have an example theorem, “I have a big mouth.” While geometric proofs typically involve an in-depth process with lots of steps, this professor decided to poke some fun at the subject instead, and keeps things light and entertaining – he knows that’s the key to students’ focus. Thus, he proved he had a big mouth by fitting his entire fist inside it.