In this activity, students are divided into a group of hormones and a group of receptors. The hormones have to find their matching receptors, and the pair, once matched, perform a given action. This activity helps students learn about...

Short, colorful movies explain each of the body's systems: skeletal, cardiovascular, digestive, urinary, respiratory, endocrine, skin, immune, muscular, and nervous. Once you've seen the movie, click on the Activity Page link for...