A working model of the respiratory system teaches kids several important concepts about how their bodies function: 1. Anatomy of the Respiratory System: It helps them learn about the key parts of the respiratory system, such as the lungs, trachea, bronchi, diaphragm, and alveoli. 2. Process of Breathing: The model demonstrates how air moves in and out of the lungs, highlighting the mechanics of inhalation and exhalation. 3. Gas Exchange: It illustrates how oxygen is taken into the body and carbo