1. The document discusses Jerome Bruner's theory of cognitive development, which focuses on how children acquire and organize knowledge. 2. Bruner proposed three modes of representation - enactive, iconic, and symbolic. The enactive and iconic modes are more concrete, while the symbolic mode uses abstract symbols. 3. Bruner also discussed the structure of knowledge and how children develop different ways to categorize information, such as perceptual, functional, and affective equivalence categories.