In my opinion I listen to what they say and type it as fast I can. But even if I can't get every thing down it will still be on the board. So you can every thing down before the end of the day. You also have to switch it to student calendar so all the students can go look at what there home work for the night is.
If the student calendar wasn't done or wasn't done well enough the students wouldn't know all there homework is. So when they come in the next day and they don't have probably wouldn't have one thing done. Like a blog or there math homework.