DRAFT
| Grade Level | ||
| Standards | Inquiry Skills | |
| Students will design and conduct scientific investigations | ||
| Students will communicate scientific procedures and explanations | ||
| Human Anatomy And Physiology Content | ||
| Students will understand how the digestive system receives, modifies, and absorbs food, and eliminates solid wastes | ||
| Objectives | Students will construct a model that mimics the mechanism for vomiting and diarrhea. |
| Materials and Activities | |
| Materials | tubing, 2 clamps, flour-water mixture, beaker |
| Engage | Remember the delicious burrito? Well, imagine it was not properly refrigerated and stayed in our locker for 3 days. You were hungry and ate it anyway and of course threw up. What mechanisms initiate vomiting? Based on personal experience how do you think this happens. |
| Explore | Construct a mechanism for vomiting. |
| Explain | Study the models constructed by different student groups. Discuss how they might work. Take out digestive cut out parts (from Lesson 1) and describe pyloric contraction, sphincter location and function. |
| Elaborate | Choose a functioning model (the teacher may want to construct one before the class) and go through each step. |
| Evaluation | Imagine the vomiting process in reverse. The cardiac sphincter closes, pyloric sphincter opens and superior stomach contracts. Use your model and construct this action. |
Teacher notes/reminders: This is the fifth lesson in a series of 6 utilizing an inquiry-based model. The lessons are:
1. The Digestive travels of a Burrito
2. Where Does a Burrito Go First?
3. How does Swallowing Effect the Burrito?
4. How Many Burritos Does a Stomach Hold?
5. What If That Burrito Was Bad?
6. Do Cows Eat Burritos?
DoDEA Disclaimer
Updated 1/01
Last Reviewed 10/2001
For additional information, contact the Education
Directorate Web Author