I have recently completed a morning in a class which was my first call in an unfamiliar school. When I arrived the class teacher was on hand to very quickly got through the planning as the children were due in minutes. After a quick overview of the morning and glance over the planning I felt happy I knew what I needed to be doing and off I went. During the maths lesson in particular I found that the starter was irrelevant to the main part and took half of the lesson up and the resources left weren't clear enough of what I needed to do with them. I just felt that there was too much going on. I also made the mistake of getting the class to do the activity at the same time which caused chaos as I wasn't sure and couldn't sort out the children properly (basically a disaster!) As this was happening mid lesson I couldn't go and ask anyone. I managed to resolve it by just sitting them all on the carpet and going through the worksheet set for the few minutes left. But I just felt it was because the planning wasn't clear and straightforward enough to follow for someone who doesn't know the class or teacher. Came away upset and feeling negative about the whole supply experience. I'm posting this as the chance of it happening again is probably likely as an NQT with not much experience yet so was wondering the best cause of action to resolve it.