I'm a qualified person. I've experience of training, explaining things to clients. Being an engineer I have habit of broken down complex problems into smaller one. It's very necessary to a have problem solving skill, I would make sure that I'll try to give my best while teaching the subject. I would first ask student if they know about the topic, which gives me the idea of the depth of understanding that they have about that subject. Then I teach about it and further I'll give some task to brainstorm regarding that idea that will helps students to clear their concept. Beside that I'll try to give practical problems from the environment/industry, to get a grip of practical things.