CK-12 Foundation
Ck 12: Life Science: Keeping Skin Healthy
[Free Registration/Login may be required to access all resource tools.] Your skin is your largest organ and constantly protects you from infections, so keeping your skin healthy is a good idea. Learn more about keeping skin healthy in...
CK-12 Foundation
Ck 12: Fourth Grade Science: Life Science: Skin
[Free Registration/Login may be required to access all resource tools.] Describes the layers and functions of the skin, and explains what you can do to help keep your skin healthy.