Kay Owens and Charly MukeEducating teachers in Indigenous communities to use collaborative mathematics is a challenge. This is particularly the case in developing countries such as Papua New Guinea. First there are the issues around the perception of authority and questioning in school. Second, there is the issue of class atmosphere and teacher pedagogical knowledge. Third is the issue of meeting different needs in large under-resourced classes. Finally there is the issue of teacher professional learning. This paper discusses one attempt that has led to an increased awareness and use of the role of questioning in the classroom. It points out some of the aspects of teacher development and what seemed to be contributing to change.