I am an NQT in an open plan Reception unit of 3 different classes. I have 28 children in my class (the largest class i have experienced) and I am struggling to control them during lessons. I plan on implementing a seating plan for carpet session to combat the low level disruption. But during lessons the chn must choose between a range of independent activities around the room while a small group works with the teacher, However, they often begin to roam the classroom and help themselves to other toys. I then find it difficult to get their attention. I use a shaker where every child must stop and listen, but many children refuse to listen and carry on playing. How can I ensure every child stays on task and ensure every child stops and listens when asked? (the classroom is quite large and noisy due to the open plan arrangement) Thanks in advance!