According to Piaget's Cognitive theory, the sequence of development has been categorized as:

According to Piaget,  the ages between 6 and 12 roughly approximate the third  major developmental stage of cognition, that is, the phase of concrete operations. Piaget proposed  the following four major periods of intellectual development: Sensorimotor: Birth to 18 months Preoperational: 18 months to 7 years Concrete operational: 7 to 12 years Formal operational: 12 years and onward. Pediatric Dentistry Infancy Through Adolescence Fourth Edition P: 469