I have got up to 75 students spread over two rooms. I wander between the two and try to spot obvious glaring issues (like the student is doing the wrong exercise and doing it in VB, for example). I don't worry if they are asleep or playing Solitaire, that's their problem. Most are really hard working. There is a high percentage of girls on this course, which is quite different to IT courses in NZ and UK.  Sometimes they put their hand up and ask for help. A few cluster around in groups and help each other out. Somehow it all seems to work out.

This video does get to be a bit of a blur at the end. That's because I had it directly streaming from my brain receptors so you get to feel how I feel too.

Students in C# Lab, China from Andy Scrase on Vimeo.