This document discusses growth and development in children. It defines growth as a quantitative, measurable increase in size while development refers to qualitative maturation and skills. The stages of growth and development include prenatal, neonatal, infant, toddler, preschool, school-age and adolescent periods. Factors that influence growth include genetics, sex, environment, nutrition and health. Key milestones are provided for each developmental period from newborn to school-age. Assessment of growth involves measurements of weight, length/height, head circumference and other parameters.