This year I have a class of 30 after lunch and on a regular basis about 8-10 of them show up late. One day this past week, 18 showed up late! Unfortunately, there is no lecture in the world that will convince a 14 year old boy that he can't be late to class because he "had to buy lunch at the Chinese store."
I am wont to find a way to teach the kids who are on time while working with those who come in late. It is unfair to all of them because class is delayed, I get a bit upset, and less gets done. It's unfortunate and I had to share. Rant over.