This essay describes and analyzes the theoretical perspectives of Jean Piaget and Urie Bronfenbrenner in relation to physical development. It discusses Piaget's cognitive development theory, outlining the sensorimotor, preoperational, concrete operational, and formal operational stages, highlighting key developmental changes at each stage. Furthermore, it explores Bronfenbrenner's ecological systems theory, emphasizing the roles of the microsystem, mesosystem, exosystem, and macrosystem in a child's development. The essay then analyzes how these theoretical perspectives inform current frameworks in early childhood education, emphasizing their role in designing appropriate academic materials and resources, and acknowledging that current frameworks are built upon these foundational theories, promoting active learning and investigation.