I think the role of the teacher in the new investigations curriculum is that of a facilitator more than that of being a teacher. When teaching an investigation, I try to model what the appropriate behavioris when using the manipulatives but without suggesting the exact way an investigation is to be solved. I even give them five or ten minutes of free exploration with the understanding that they must then give me their attention when I ask for it otherwise they won't be given any more free time. After the investigation, I then allow each student or group to share their ideas they came up with to the class and allow them to explain their thinking. I do emphasize to the other students that we are here to support each other and everyone is special because they are different and in how they think about solving problems in different ways. When I notice that someone can not handle the group work or pair work I then intervene and become another member of the group to get the ball rolling. I make them become active! I think that at the fifth grade, the children have become so used to being told answers that they sometimes forget to think or investigate.