It's an 'innovative' way to submit calculus homework, without needing anyone to check them. The poor students get about 1-2 sheets of homework a week. They usually concentrate on this hw while neglecting the rest of their courses. Thus causing big gaps of understanding in those courses, not to mention on calculus since those homeworks don't really help, (nobody actually does all of them without cheating anyway).
-Oh shit, we just submitted 2 yesterday!