Once teachers have prepared an environment rich in materials and possibilities, they observe and listen to the children in order to know how to proceed with their work. Teachers use the understanding they gain thereby to act as a resource for them. They ask questions and thus discover the children’s ideas, hypotheses, and theories. They see learning not as a linear process but as a spiral progression and consider themselves to be partners in this process of learning. After observing children in action, they compare, discuss, and interpret together with other teachers their observations, recorded in different ways, to leave traces of what has been observed. They use their interpretations and discussions to make choices that they share with the children.