Download Rubric: Measuring the Monstrous Digestive System Student Name

Rubric: Measuring the Monstrous Digestive System
Student Name: ________________________________________________________
Date: __________________________________________
Level 1
Level 2
Level 3
Level 4
During Class
Discussions
Limited participation
during class discussions.
Some participation during
class discussions.
Considerable participation
during class discussions.
Active and engaged
participation during class
discussions.
Collaboration
During Group
Work.
Limited coloration during
group work.
Some collaboration during
group work.
Considerable collaboration
during group work.
Active and engaged
collaboration during group
work.
Observation/Record
Sheet
Extensive missing or
incorrect data recorded.
Some missing or incorrect
data recorded.
Few missing or incorrect
data recorded.
No missing or incorrect
data recorded.
“Conclusions”
Responses
Expresses and organizes
ideas and information with
limited effectiveness.
Expresses and organizes
ideas and information with
some effectiveness.
Expresses and organizes
ideas and information with
considerable effectiveness.
Expresses and organizes
ideas and information with
a high degree of
effectiveness.
Model representing
the length of
Digestive System
Model assembled with
Model assembled with
many (5 or more) mistakes. some (3-4) mistakes.
Model assembled with few
(1-2) mistakes.
Model assembled with no
(0) mistakes.
Participation:
Name: ____________________________________________ Date: __________________________________
Measuring the Monstrous Digestive System
Hypothesis
I think my digestive system will be ______________ cm long.
Procedure
1. Measure each part of the digestive system in cenitmetres. Record your data in the Observations
section.
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Digestion begins in the mouth, so measure and cut a piece of black yarn from the front to the
back of the mouth. (You can do this by stretching the yarn from the front of your lips to the
back of your jaw along your cheek.)
The esophagus is a tube that connects the mouth and stomach. Measure and cut a piece of
light blue yarn the length of the esophagus. (*The esophagus ends just below your rib cage.) Tie
the blue esophagus to the black mouth.
In the stomach, gastric juices break down solid food into liquid. Find the length of the stomach
by spreading the fingers of your hand and measuring the span from the thumb to the little
finger. Measure and cut a piece of pink yarn to match this length. Tie the pink stomach to the
light blue esophagus.
The small intestine is the longest part of the digestive system; it is folded up inside of you so it
fits. Food is further digested and absorbed here. Measure your height and multiply by four. Use
green yarn to represent the length of the small intestine. Tie the green small intestine to the
pink stomach.
Last is the large intestine. It is much wider than the small intestine but much shorter. It is about
as tall as you are. Undigested material from the small intestine move to the large intestine
before being excreted. Use navy blue yarn to represent the length of your large intestine. Then
tie the navy blue large intestine to the green small intestine.
2. Add all the lengths together. This is the approximate length of your digestive system.
Observations
Digestive Organ
Length (cm)
Mouth
Esophagus
Stomach
Small Intestine
Large Intestine
Total Length of the Digestive System: ______________ cm
Conclusions
3. Why do you suppose your digestive system is so long?
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4. A model is a representation of an object or a process or idea. It simplifies and helps to explain
whatever it represents. List two things your model helped you learn about the digestive system.
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