This area of the course taught me how to best present lectures and demonstrations to the students, as well as common styles of lectures and demonstrations. Use "mini-lectures" of 10-15 minutes, cover a single point with examples and end with a short summary. Make notes about how your lectures went, and review what worked and what didn't. During demonstrations try to keep it to 5 to 7 steps, make it so everyone can see, and have a fallback plan if the demonstration doesn't go well.