Changing dates don’t fool me…

One of my students came in to the program yesterday and told me had done his homework at school, so i told him to go get it so i can could check it. As i began to look his work over, I realized he had done his work very quickly, and it was not corrected. I asked him to do it again. He left and came back three minutes later. He told me he had fixed his work. I told him he needed to do the entire thing, and I sent him back again. The third time he came back he tried to tell me he was accidentally showing me the wrong homework page…that he had gotten confused. He pulled out another math sheet that he had (very obviously) changed the date on. It originally said jan. 7. It had already been turned in and graded. Instead of fighting him on the issue, I sat there and went over that whole thing and made him rework problems (even tho he had the right answers, since it was old homework they had already corrected). Once he thought he was finally done, i told him to give me the other original homework page. I told him we were gonna do both. After we had completed both sheets I told him this is what happens when he tries to fool the teacher.