Piaget's developmental theory is based on four phases on the child's development. The first is the Sensori engine level which is from beginning to 2 yrs. That is when an infant differentiates itself from items. The infant likewise have no thing permanence. The infant demonstrates simple reflexes from the first patterns, up to the coordination of means and goals. Brains at this time is highly predicated on movements somewhat than language, this is also known as schemata. The Sensori motor unit level was later more identified with six stages, the first level (0-1month) use of reflexes, level two (1-4months) key round reactions, three (4-8months) secondary round reactions, four (8-11months) co-ordination of secondary techniques, five (12-18months) tertiary circular reactions and the final stage (18-24months) technology of new means by mental combinations.