This document discusses child and adolescent growth and development. It defines growth as measurable physical changes that occur over time, such as changes in height, weight, and teeth. Development refers to qualitative changes in intellectual, mental, and emotional skills over time, which can be observed. The types of growth include physical and physiological, while the types of development are motor, cognitive, emotional, and social. Principles of growth and development include that it is a continuous, predictable sequence that varies between individuals and stages influence each other. Theories discussed include Piaget's cognitive development theory and Erikson's psychosocial development stages.