Digestive+System

=Digestive / Urinary System =

Grade 8 Human Systems

 * Purpose:** This section introduces students to the structures and functions of the digestive and urinary systems. Students will learn the processes of mechanical and chemical digestion, and will be able to trace the path of food through the digestive tract. Students will also learn about the kidneys, and how waste is removed from the human body. Finally, students will be able to identify problems with the digestive and urinary systems.


 * Activities:** When participating in the unit, the students conduct extensive online examinations of the digestive and urinary systems.


 * Alternate Activity:** Students connect the processes of sight, taste, smell, and digestion in an activity that looks at the science of food preparation. Possible questions to explore:
 * 1) Why do McDonald's fries taste so good?
 * 2) Why do we get hungry when we drive by a restaurant?
 * 3) How do advertisements make us hungry?
 * 4) What is flavor?

The students use the [|Human Body Systems and Health] text by Holt, Reinhart, and Winston for one source of information. However, the primary sources of information are retrieved from the following websites:
 * [|Digestion Animations]
 * [|Science of Cooking]
 * [|Urinary Animations]

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