This is a hands-on, engaging activity designed for students to investigate the different structures and functions of the body systems. In the activity, students will rotate through fun body systems lab activities. They will read about each system, answer pre-questions, complete a hands-on activity relating to the body system, and complete post-activity questions. At the end, there is an extended exit ticket with post-lab analyses questions and a graphic organizer summarizing the main structures and functions of each system. For example, for the digestive system they will unravel string to represent how long the digestive system is, or for the cardiovascular system they will do jumping jacks and measure their heart rates, and for homeostasis they will put their hands in cold water and take their internal body temperature to see how their body maintains balance despite outside conditions. The body systems included in the activity are: Respiratory, Circulatory, Digestive, Nervous, Immune, Skeletal, Muscular, and Homeostasis.