Join the Denver Museum of Nature and Science to explore a sheep heart in-depth through small-group dissections.  Investigate how the circulatory system works to deliver oxygen and nutrients throughout the body and carbon dioxide to the lungs.  Discover why one side of the heart has to work harder than the other and the benefits of a healthy diet.  Students in 3rd through 6th grade welcome.  Space is limited; please visit the online calendar to register.