The document discusses language development and supporting emergent literacy in children. It notes that language develops through coordinating sounds, meanings, words, word sequences, volume, tone and turn-taking rules. It provides language development milestones for children aged 2-6 and suggestions for encouraging development. The document also discusses dual language development, language loss, learning a second language, signed languages, dialect differences in the classroom, teaching immigrant students and English language learners, and recognizing special needs in ELL students.