CK-12 Foundation
Ck 12: Biology: Excretory System Diseases
[Free Registration/Login may be required to access all resource tools.] Covers some common kidney diseases and dialysis.
CK-12 Foundation
Ck 12: Biology: Excretion
[Free Registration/Login may be required to access all resource tools.] Describes organs of the excretory system and their roles.
National Health Museum
Access Excellence: Graphing Frog Respiration
This is a lesson plan for a science lab recording and graphing the respiration of frogs. Includes background information for teachers, preparation information, and detailed explanation of the activity.
TeachEngineering
Teach Engineering: Just Passing Through
This lesson helps students explore the functions of the kidney and its place in the urinary system. Students learn how engineers design instruments to help people when kidneys are not functioning properly or when environmental conditions...
CK-12 Foundation
Ck 12: Life Science: Excretion
[Free Registration/Login may be required to access all resource tools.] You might have noticed that sometimes your urine is darker than usual. This can happens when your body is low on water and trying to reduce the amount of water lost...
CK-12 Foundation
Ck 12: Biology: Kidneys
[Free Registration/Login may be required to access all resource tools.] Describes the roles of the kidneys in homeostasis.