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Investigation 2.3
Where Did That Apple Go? |
Think about what happens when you eat lunch. What do you think happens with your food. Look back at the initial drawing you made and the activities that followed. Can you add more to your drawing now? |
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Show what your model looks like now by drawing on the figure in your lab book. |
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Share your drawing with your group. How do your ideas differ or how are they alike? |
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Your teacher will now show you a computer animation of the digestive system. This is one artist's idea of what digestion looks like. Pay close attention to the mechanism of digestion that is shown. As you watch the animation your teacher will stop it frequently and ask you questions. These will help you compare the model the artist has drawn to your own model. |
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Is your model different that the computer model? |
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How is it alike and different? |
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Why do you think this is so? |
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Now with a partner, describe what you have seen in the animation. |
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Would you like to see the animation again. Sometimes animations move so quickly it is hard to attend to all the action. If you need to see it again, ask your teacher. |
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Tell your partner two things that you have learned that are new. |
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Think back over all the activities you have done so far. What does your model of digestion look like compared to your first drawing? Has it changed? |
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On the drawing in your lab book, trace the path food takes from the time you put it into your mouth until it reaches the intestines. |
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Label all parts and tell what happens at each site. |
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Indicate what structures and processes are mechanical digestion and which ones are chemical digestion. |
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