Explore the Human Body, 4-12

http://www.nationalgeographic.com/guides/science/humanbody/index.html
This is a National Geographic site full of text, visuals, interactive activities, and more that focus on the brain, heart, digestive system, lungs, and skin. Students will be able to stimulate the brain and find out how this complex organ is the body’s primary control system. They can feed the body different foods and find out how the digestive system is the body’s fuel factory. Students can watch how aging and stresses like cuts and sunlight can affect the skin.