Piaget's Stages

According to Piaget, children actively seek out information and adapt it to the knowledge and conceptions of the world that they already have. Piaget thinks that his stages represent broad ways of thinking. Piaget described four distinct periods of cognitive development (sensorimotor intelligence, preoperational thought, concrete operations, and formal operations). The sensorimotor intelligence period begins at birth and ends at about 24 months. Piaget called it sensorimotor intelligence because infants learn through senses and motor skills. This two year long period is broken down into six stages.
Children create their own understanding of reality from their own experience. Children organize their knowledge into complex cognitive structures