This document discusses the stages of language acquisition in children. It outlines 6 key stages: cooing from 0-4 months, babbling from 6-8 months, one word stage from 9-18 months, two word stage from 18-24 months, telegraphic stage from 24-36 months, and multiword stage at 36 months and beyond. At each stage, children's language abilities progress from making sounds to speaking single words to forming simple sentences and eventually using complex grammar. The stages show how children unconsciously and naturally learn language through interactions with people in their environment.