Jerome Bruner developed a model of how children acquire knowledge through experience. The model has three stages: (1) enactive, where children represent knowledge through physical actions, (2) iconic, where children use images to represent knowledge, and (3) symbolic, where children use words and ideas. Bruner also believed that scaffolding, where adults and other children build on a child's existing knowledge, is important for learning. His theories emphasize using play, role playing, and demonstration to help children develop skills and understand the world in a way that gradually increases independence.