公开课John Snow Defeats King Cholera_图文

Unit 1 Great Scientists

Reading

Scientists:

What do they have in commom
made a great achievement ? succeeded in their scientific career ? overcome many difficulties ? made great contributions
?

John Snow Defeats “King Cholera”
Who is John Snow? ? What is “King Cholera”? ? How do you understand the word “defeats”?
?

Fast reading
John Snow,(18131858) British, is an anesthetist(麻醉师) and more importantly , “ Father of epidemiologist (流行病学家)”.

John Snow Defeats “King Cholera”
Who is John Snow? ? What is “King Cholera”? ? How do you understand the word “defeats”?
?

Name of illness Symptom(症状)

cholera (霍乱), an infectious disease severe vomiting (呕吐) and diarrhoea (腹泻)

Aftereffect (后果)

die quickly from a loss of liquid

John Snow Defeats “King Cholera”
Who is John Snow? ? What is “King Cholera”? ? How do you understand the word “defeats”?
?

What’s the main idea of the passage?
A.

B.

C.

D.

John Snow was a well-known doctor in London. The cause of Cholera was polluted water. The source of all drinking water should be examined. How John Snow did a scientific reaserch to collect, analyze data and find the cause of the disease and solved it .

Careful reading
Steps in doing a scientific research:

⑦ draw a conclusion ③ Think of a method ④ Collect results ② Make a question ① Find a problem ⑤ Analyse the results ⑥ Find supporting evidence

Fill in the blanks.
Paragraph Steps in doing a scientific research Detailed information

1

Find a problem Make a question

What cause cholera? Which theory is correct? Gather information from the place where the cholera outbreak was severe

2

3

Think of a method

4

Collect results Analyse results find supporting evidence Draw a conclusion

mark information on a map to find out where people died or did not die.
Analyse the water to see if that is the cause of the illness. Find other evidence to support the analysis. The water is to blame. The source of all drinking water should be examined so that it is safe.

5

6

7

Pub

Many deaths happened here. A map of Broad No death happened here.

Street

It seemed the water from the pump was to blame. What did he do next?

Discussion
Gregor Mendel (孟德尔)used peas to show how physical characteristics are passed from parents to their children. Do you think how did he prove his new idea?

With the help of the steps used in scientific research?

Homework

1.Read the text three times and learn the new words by heart 2.Try to retell the reading passage with the help of the seven steps used in a scientific research.


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