We are a small school with all classes being mixed ages. Is anyone else in this position and trying to deliver the maths to several year groups, all of whom are supposed to be doing their own year group work? We know there are gaps so are trying to address these but every time we think we have an idea, something causes us to question our thoughts. Can see how fluency, deep learning and mastery would work in single age, but struggling with two and in one case three different year groups in a class. Any thoughts would be appreciated!