The document discusses the importance of language development for literacy. It notes that children's literacy and reading/writing abilities begin in infancy along with oral language development. Proficient readers demonstrate strategic, engaged, fluent behaviors similar to good players. The document also observes two young children in a family childcare setting, engaging with them through routines like singing, counting, and commenting on emotions. Finally, it discusses theories from Piaget and Vygotsky regarding cognitive development and the role of social interaction and language in children's thinking.