I had my 7th grade class write down weather data for the past 12 days for different cities. We were then going to use the data to compare the different cities on poster boards to lead into talk about weather vs climate and how different factors affect climate. But half my class didn't do it! So of course they got a 0 on the assignment, but then what do you do with the kids during class? Today I managed to come up with a random vocabulary assignment to keep them busy while the other kids worked on the posters. But then, do I give kids who didn't do the info a 0 on the poster board? Or give them a grade on the vocabulary assignment? I'm wondering just generally- what do you do when you plan a lesson on the fact that the kids actually do homework and then they don't do it?