How do we create an atmosphere where children are comfortable in discussing ideas in a group?

On page 221 a question is asked, "How can we support them in letting their thoughts emerge?" Then it goes on to say, "One of our tasks as teachers is to be able to relaunch the ideas that emerge from the children's discussions."

I really enjoyed reading the children's discussion about getting their letters to America faster by discovering the fax machine. I can definitely tell times has changed, because if children discussed this topic now, I'm pretty sure they would talk about cell phones, text messaging, and emailing, since most of them have access to technology as such. I was really intrigued by how little the teacher talked. She only talked a few times and it was only when she asked a question or restated what a child said. I believe that one thing a teacher can do to have a quality discussion with children is to step back and let the children do the talking and discovering. When children are allowed to discuss a topic with each other, there can be so many more ideas and new things that can emerge. It also allows children to develop their language and problem solving skills. Even by having them draw a picture of what they were discussing, such as the one they drew on how the fax machine would get the letter to America, allows children to make their own story. I love when teachers write what the children describe their pictures to be, because it opens up their world to you. It helps you to understand what the children are thinking and feeling. The author states on page 225, "In their discussions, the children attempt to develop a provisional new theory that makes use of the contributions of the parts of the individual theories that they see as being significant." This enables children to create what they think is right and converse with other children about what they think. I feel that a good way to document what the children say during discussions is charts (if you can write fast enough). Having a question in the center of the paper and the children's ideas as the branches can help children to understand the concept of a discussion, group work, and what their ideas look like on paper. Group work is important for young children, because it helps them to spark creativity, share ideas and opinions, delegate tasks, learn to comprise, and build relationships with each other. Children are not too young for this, actually I think young children are the best at group work, because they are not afraid to say the wrong thing and they just say what is on their minds at the time, which I think is really interesting. How do we create an atmosphere where children are comfortable in discussing ideas in a group?