Engaging a class
One of the skills that is very important to an instructor is engaging a class. It won’t matter how well structured a class is, how much research went into it, or how technically correct the material is if the students are not kept engaged with the class in some way. If they lose interest, then they are not going to be able to pick up the lessons effectively.
There are many ways to engage a class; just as there many ways to mismanage the engagement of a class and to lose their interest, or to let the attempts to engage them distract them from the actual technical material that is being taught.
Humour
Humour is one of the most obvious ways of engaging a class, and can be one of the easiest. Simply telling a joke or two is a quick way to make the atmosphere seem friendlier and a little less serious. Some care needs to be taken with humour though: a joke may seem like it will be funny, but then fall flat, which will not help with engaging the class, and could even do the opposite. One example comes to mind of a seminar I once took part in where the instructor came across as quite strict and serious, but out of the blue made one or two very bad jokes. This simply came across as jarring. Other instructors might include too many jokes, to the point where it becomes hard to take them seriously. It is also worth bearing in mind that everyone might not share your sense of humour, and telling a joke during class time that people might find either offensive or cringe-worthy will also not help.
The occasional well-timed, well-told joke can definitely help engage a class, although jokes that are badly timed, badly told or that are simply inappropriate, or making too many jokes can damage how you are perceived in your student’s eyes.
Humour can be more subtle than telling obvious jokes as well: I can think of some instructors who’ve done well from using a certain kind of dry humour for instance. Many of the treatises we study include phrases such as “…and then you may do as you like to him…” or “…this blow he will not soon forget”. Phrases like this, when delivered during a technique demonstration with an under-stated voice, a wink and a smile can go a long way towards this sort of humour.