For example, children were collecting leaves on the playground and were theorizing about how they fall and come back to life. The teachers noticed that children generally encounter dead leaves. They decided to help them encounter life instead. Shared discussions among children, among adults, between adults and children are ways children represent what is learned. Then through repeated conversations, and revisiting ideas, children can reconstruct their earlier theories.
Exchange is fundamental.
Exchange is not just measured in money or goods. Teachers are also constructing knowledge. In Italy, Loris Maliguzzi was considered radical. Credit and power was given to academic circles and not to practitioners or in this case teachers. This may be a contradiction.