This report delves into the developmental stage of middle childhood, focusing on children aged 6 to 12. It begins with an introduction to the stage, highlighting key developmental activities across physical, cognitive, emotional, and social domains. The report examines Erik Erikson's psychosocial theory, specifically the industry versus inferiority stage, and Jean Piaget's theory of cognitive development, emphasizing the concrete operational stage. It also identifies negative environmental factors, such as poverty and inadequate housing, and their impact on child development. Furthermore, the report explores preventive and intervention measures, including ensuring adequate nutrition, promoting education, and government initiatives to reduce poverty and provide support for families. The aim of the report is to analyze and understand the developmental milestones associated with middle childhood.