I fear everything, but I try to have my fearful thoughts well before the class starts - so I have time to think through my contingency plans. The usual suspects include:
- Technology is not working
- Some students come unprepared; and the related - Student(s) are disruptive/angry because they feel guilty about being unprepared
- Some students are very advanced; and the related - Student(s) are disruptive becuase they are bored
- Things go too quickly / slowly than I had thought