Lesson 4

Lesson Objectives...

• Analyze and interpret data to determine patterns and limitations of the relative amounts of different molecules in food as it moves through the digestive system of a healthy person versus M’Kenna.

Resources for Lesson 4...

Analyzing Data with the I2  Strategy...

What happens to a graham cracker as it comes out of the small intestine and into the large intestine?

Let's look at data of how starch (complex carbohydrates) changes as it moves from the mouth to the small intestine and to the large intestine.  We're going to use the Identify and Interpret (I2 ) strategy to help us.

1. First, make observations:

   • Draw an arrow to something you notice in the graphs.

   • Write "What I see" (or WIS), then write your observation in a complete sentence.

   • Share your observations.

2. Second, interpret what these observations mean:

   • Think about what each observation means.

   • Write "What it means" (or WIM), then add your explanation next to the observation.

What 's in poop?...

Compare Food Molecules...

What we figured out this lesson...

• As food moves through a healthy digestive system, food molecules disappear.

• Fiber always stays the same in the digestive system and leaves the body as poop.

• Most other molecules are gone when they reach the large intestine in a healthy person. Only fiber and water remain.

• M'Kenna's poop contains some additional food molecules (glucose, starch, fatty acids), too, which are not found in a healthy person's solid waste (poop).