The document discusses theories of how children learn English as a foreign language. It covers several topics: (1) how children think and learn physically, emotionally, and conceptually according to Piaget's stages of development; (2) the differences in teaching young learners compared to older students due to their energy levels, emotions, literacy skills and ability to focus; (3) scaffolding learning and using multiple modes of representation; and (4) methods that are effective for young learners such as Total Physical Response, project work and recognizing different learning styles. The key theories discussed include Piaget's constructivism, Vygotsky's zone of proximal development, and Gardner's theory of multiple intelligences.