According to Piaget's theory, a person's learning process will follow the pattern and process of its development according to his age. This pattern and mount pattern are hierarchical, meaning that they must be traversed in sequence and someone who can be learned from something outside the cognitive. Piaget divides these stages of cognitive development into four :1. Sensorimotor stage (0-2 years old)2. Preoperational stage (age 2 - 7/8 years)3. Concrete operational stage (age 7 or 8-11 or 12 years)4. Formal operational stages (ages 11 / 12-18 years). source:Santrock, J. W. (2012). LIFE-SPAN development. New York: McGraw-Hill.

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