The document discusses growth and development in children. It defines growth as a quantitative increase in size through cell multiplication, while development refers to functional and physiological maturation. Some key principles discussed include cephalocaudal and proximodistal directions of development. Factors that can influence growth include genetic, prenatal, and postnatal factors. The document also describes methods to assess growth such as weight, length, head circumference, chest circumference, and skin fold thickness. Growth charts are discussed as tools to monitor growth over time.