新人教选必二Unit 1主课文教学课件设计逐字稿

人教选必二Unit 1主课文John Snow Defeats King Cholera教学

——“维词教学系统”课件应用实例

山东济宁嘉祥一中李凤臣老师

T: Hello, guys! Let’s start our class. Take out your textbook and turn to page two. First I have a question: are you familiar with these things?

S: Yes!

T: Look at the first picture. What are they doing?

S: 做核酸.

T：Yes！How to say “做核酸” in English? Let me tell you: they are running nucleic acid test. Follow me: nucleic, nucleic, nucleic.

S: Nucleic, nucleic, nucleic.

T: The second one. What is the boy doing？

S: The boy is getting vaccinated.

T: Yes. Covid-19 is very annoying. When you were infected with it, how did you feel? Give us some symptoms.

S: I had a fever. I felt very tired. My body was painful.

T: I had similar symptoms with you. When I was infected with Covid-19, I had a very high fever. And I also suffered a persistent cough. But with everyone's efforts, we finally win the battle. In other words, we, read it together, defeat Covid-19.

S: We defeat Covid-19.

T: My dear students, do you know “History repeats itself”? In 1854, there was also an epidemic disease which is called cholera. So in this class let’s go back to 1854 and find out what happened.

T: This is the title of the passage. Let’s read it together: John Snow defeats king cholera.

S: John Snow defeats king cholera.

T: Now read the first paragraph and tell me who is John Snow. ... Time is up. Okay, you please!

S: He is a British doctor who never lost his desire to destroy cholera once and for all.

T: After reading the first photograph, what is cholera? If someone is infected with cholera, what will happen? You please! Can you list some symptoms?

S: Yes, severe diarrhoea and dehydration.

T: In some cases, some people might die from the disease. Next question is: why we call it king cholera? OK you please!

S: Cholera used to be one of the most feared diseases in the world.

T: Yes, you are right. People were frightened by the severe and deadly disease, so they described it as king cholera. Right?

S: Yes!

T: Now, let's focus on: how did Jone Snow defeat king cholera?

T: You need to skim the whole text quickly and match the main ideas.

S: Paragraph1 tells us John Snow desired to destroy cholera.

T: Next one.

S: Para2: Snow decided to prove the second theory. Para3 ...

T: Good job! All of you did a good job.

T: Now you need to scan para2 and try to fill in the blanks here. How many theories were there?

S: Two.

T: Theory1, you please!

S: Bad air caused the disease.

T: Theory2, you please!

S: Cholera was caused by an infection from germs in food or water.

T: Good job! Are the two theories similar or contradictory?

S: Contradictory!

T: Yes, they are contradictory. Which one did Snow subscribe to?

S: The second one.

T: Now read the following sentences and fill in the blanks.

S: Although the second theory was correct, Snow still needed proof. Consequently, when an outbreak of cholera hit London in 1854, Snow began to investigate.

T: Good job! Tell me which one is the synonym for the word consequently. But, or, yet, therefore. Which one?

S: Yet?

T: Sorry, I don’t think so. As we can see, the first sentence is the reason and the second sentence is the result. So the relationship between the two sentences is reason and result relationship. So “consequently” means “therefore”. Did you get it?

S: Yes!

T: Besides, Let me give you more synonyms for the word, consequently. Such as “so” and “as a result”.

T: Now, class, look at the map here. What are the names of the two streets?

S: Broad street and Cambridge street.

T: Good job! What do the signs, the short stripe mean?

S: The death number.

T: How about these numbers? What do they mean？

S: They stand for numbers of houses.

T: Now, Look at the map carefully, which houses had more than four deaths in Broad street? Listen carefully, in Broad street, not Cambridge street.

S: House 16, 37 ...

T: You are right! As we can see, multiple deaths happened here.

T: Next question is which houses had no death in Broad street?

S: 14, 21 ...

T: Right. But I am confused. People lived in the same street, but someone survived, while someone died. Why?

S: Because some households had not drunk the water from the pump in Broad Street. 

T: Yes, you’re right. Consequently, Snow suspected that the water from the pump ...

S: Was to blame!

T: Exactly!

S: What are the research tools used in Snow’s research?

T: Yes! Maps and statistics. Next time when you want to make a research, you can try the methods.

T: Now scan paragraph3 again and tell me, how did Snow find the supporting evidence? Fill in the blanks below. OK?

S: OK!

T: Let’s check the answer.

S: In another part of London, a woman and her daughter, died of cholera because of drinking the water delivered from the pump.

T: Good job! Can you put that three parts together to make a sentence?

S: Yes! In another part of London, a woman and her daughter had died of cholera because of drinking the water delivered from the pump.

T: Wonderful! With the help of this evidence, do you know what the announcement of Snow is? And What did he do accordingly?

S: The pump water carried cholera germs. Accordingly, Snow had the handle of the pump removed so that it could not be used.

T: Very excellent! Now let’s read the sentence and fill in the blanks.

S: Finally, through this intervention, the disease was stopped in its tracks.

T: Very Good!

T: Now, boys and girls! Look at the screen. The left is about the investigation process of John Snow and the right is about the scientific stages. You need to read para 3 carefully, then match the left with the right. Clear?

S: Yes!

T: Good! Let’s start.

T: Now, let’s check the answer.

S: “cholera hit London” should match with “find a problem” .

  ...

T: Wonderful job! So when you want to investigate something, maybe you can follow these scientific stages.

T: Now read para2-3 again and complete the chart below.

T: OK? Let's check the answer. Read the sentence and give us your answer.

S: It was believed that cholera was caused by bad air or germs in food or water ...

T: Good! Now can you match the following headers with letters A to E from the chart above?

S: Conclusion matches with D...

T: Good! Now let’s make a change. Read paragraph 4 and then give us the questions according to the answers here.

T: Time is up. You, have a try!

S: What’s the truth of the cholera in 1854? ...

T: Good job! Let’s go on reading. Now read the last paragraph and tell me, what contributions did Jones Snow make?

T: Can you give us your opinion?

S: Water companies began to sell clean water ...

T: Good! So these are the contributions John Snow made. Look at this sentence “Snow transformed the way scientists study diseases”. Because of this, what title did people give him?

S: The father of modern epidemiology.

T: Yes, the father of modern epidemiology.

T: Now let’s review how John Snow defeats king cholera. Fill in the blanks according to the text.

S: OK!

T: Let's check the answers. Read and give us your answers.

S: In the early 19th century ...

T: Good job!

T: Is cholera still a problem? Yes or no?

S: Yes!

T: Yes, it is still a problem now. Do you know how to prevent cholera?

S: Drink pure or boiled water.

T: Yes, you're right. Are there any other methods? OK, watch a video to find more about it.

T: Now, tell me, to prevent cholera from spreading, besides drinking pure or boiled water, we ‘d better ...

S: Wash hands carefully and eat clean food.

T: I do agree with you!

T: Today all of you did a good job! That's all for this class. Thank you!

S: Thank you, Mr. Li.