In Human Body Systems students learn that their bodies allow them to do many things, such as moving and breathing. What students may not realize is that their bodies made up of several systems that do different jobs but work together to allow their bodies to function. Students probably are not familiar with how and where the different body systems interact and how each system works to enable people to carry out all human activities.

Human body systems are parts of the body that carry out specific functions. These systems include organs and tissues that share a related function. While this unit only covers five body systems, there are eleven systems in the body. Students listen and read along with teacher Read Aloud of Student Book. Students identify the skeletal, muscular, respiratory, circulatory, and nervous systems. Reading about these body systems is reinforced by teacher demonstrations. Students further explore the different body systems through observations of their own body movements and through investigations in which they manipulate objects and materials.