Acquisition and the Development of the Third Children AGE THREE YEARS in Education of Children Age Laboratory School University Nusantara PGRI Kediri

In the first year of life children begin to imitate the words they hear from the surrounding environment and it can be said that at that moment the child begins to produce "first words". When the child is 18 months old the words they produce more and change from one-word sentences to two-word words and three words. The study was based on Chomsky's biological-cognitive theory that every child is born with biological potential for language, while Skinner's theory states that language acquisition and development occurs not only because of biological potential but also because of a supportive language environment. Three-year-olds in speaking generally say cutting words, as well as mastery of language controlled by the child is obtained through certain stages. Three-year-olds are able to compose a sentence in saying although still very simple and limited. The acquisition of a child language can be categorized in several stages of MLU (Mean Length of Utterance) namely; I (12-22 months), II (27-28 months), III (28-29 months), IV (29-30 months), V (31-32 months), VI (33-34 months), VII ( 35-39 months), VIII (39-40 months), IX (41-46 months), X (47+ months)