I met my new class today and they seem like a fantastic bunch. However, I've noticed a few petty arguments breaking out between children, for example over pencils or accusing each other of pushing them. Leads to a 'no he did it, no its her fault' disagreement... I'm sure you all know the sort! I was just wondering how others dealt with this? I find it really difficult to know what to say/do in these situations because on one hand I don't want to disrupt the lesson by drawing attention to something so petty but on the other hand I know something has to be done! Any ideas?