There are two educational modes of mental health pedagogy: one is to tell others about people's psychological state, what they encounter, what they react to, and so on. The second is to show its symptoms with the help of field experiments. For example, imagine how you feel when you meet someone you respect very much but have passed away. Crying proves that men feel guilty about themselves. It reflects its stress, emotional impulse and so on.
In short, no matter how you teach it, it is enough for students to really feel it. You might as well add some touching examples to ppt.