The document outlines an activity to identify and organize the key parts, descriptions, and functions of the circulatory system. It provides a graphic organizer for students to fill in the missing pieces, including the parts of the circulatory system (heart, blood vessels, blood), types of blood vessels (arteries, veins, capillaries) and types of circulation (pulmonary, systemic, coronary). The goal is for students to complete the graphic organizer and explain the different types of circulation.