Here is a class in time for exam season based around a fascinating video from a PBS documentary about the brain. It contains a vital piece of advice for performing well in many situations and has an interesting story behind the scientist doing the research. The exam content is word formation (adjectives) with some exam style tasks and then a game to cement what has just been taught. You could extend with by making questions from the reversed taboo words that students choose!
Dealing with Pressure (Exam class) – (B2-C2) Word Formation ( Suffixes)
Tips of the Tongue 