人教版（2019）选择性必修第二册Unit 1 Science and scientists Reading and Thinking 课件(共20张PPT)
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| 名称 | 人教版（2019）选择性必修第二册Unit 1 Science and scientists Reading and Thinking 课件(共20张PPT) |  | |
| 格式 | pptx | ||
| 文件大小 | 2.8MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2024-04-23 15:53:18 | ||
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(共20张PPT)
JOHN SNOW DEFEATS "KING CHOLERA"
Unit 1
Learning objectives
After this class, you will be able to:
1. figure out the text type and structure
2. obtain and know John Snow and cholera.
3. Form a new understanding of science and scientists by thinking critically.
1
Lead-in
There are some great scientific achievements that have changed the world.
Can you name some of them
What do you know about great scientists
Who wrote a book explaining how animals and plants developed as the environment changed
The Origin of Species
Charles Darwin (1808-1882)
British author
It explains how plants and animals changed over time to fit in with a changing environment.
draw a conclusion
find a problem
make up a question
think of a method
collect results
analyse the results
Find supporting evidence
draw a conclusion
think of a method
collect results
make up a question
find a problem
analyse the results
Find supporting evidence
7 stages in right order
text pattern analysis
2
Reading
Read the whole text quickly and match the main ideas
Para1
Para 2
Para 4
Para 5
John Snow desired to destroy cholera.
John Snow decided to prove the second theory.
Snow began his study by marking on the map
Truth of the infection of cholera
Snow's contributions
Para 3
Text type
Narration
Cholera used to be one of the most feared diseases in the world, until a
British doctor, John Snow, showed how it could be overcome. This illness causes severe diarrhea, dehydration, and even death. In the early
19th century, when an outbreak of cholera hit Europe, millions of people died from the disease. As a young doctor, John Snow became frustrated because no one knew how to prevent or treat cholera. In time, he rose to become a famous doctor, and even attended to Queen Victoria when she gave birth. However, he never lost his desire to destroy cholera once and for all.
What is Cholera
find a problem
Cholera
Snow
It's one of ________________________ in the world, because it causes _______________________________.
_______________________(when), an outbreak of cholera hit _______ milions of people ______________________.
He rose to become _________________ , and even _______________ Queen Victoria when she gave birth..
Snow became ________ because no one knew _________________.
However, he had a desire to __________________ once and for all.
the most feared diseases
severe diarrhoea and dehydration
In the early 19th century
Europe
died from the disease
“King Cholera”
frustrated
how to prevent or
treat cholera
a famous doctor
attended to
destroy cholera
Though being famous, he was still devoted to defeating “King Cholera”
In general, doctors in those days had two contradictory theories to explain how cholera spread. One theory was that bad air caused the disease. Another was that cholera was caused by an infection from germs in food or water. Snow subscribed to the second theory. It was correct, but he still needed proof. Consequently, when an outbreak of cholera hit London in 1854, Snow began to investigate. He discovered that in two particular streets the cholera outbreak was so severe that more than 500 people died in ten days. He was determined to find out why.
1.What happened in 1854
2.How many people died in 10 days
Cholera outbreak hit London.
500
ask a question
Which theory is correct
Snow began by marking on a map the exactplaces where all those who died had lived. There were multiple deaths near the water pump in Broad Street (especially house numbers 16, 37, 38, and 40). However, some households (such as 20 and 21 Broad Street, and 8 and 9 Cambridge Street) had had no deaths. These people worked in the pub at 7 Cambridge Street. They had been given free beer, and so had not drunk the water from the pump. Snow suspected that the water pump was to blame. What is more, in another part of London, a woman and her daughter had died of cholera after moving away from Broad Street. It seemed that the woman liked the water from the pump so much that she had it delivered to her house every day. As a result of this evidence, John Snow was able to announce that the pump water carried cholera germs. Accordingly, he had the handle of the pump removed so that it could not be used. Through this intervention, the disease was stopped in its tracks.
collect data
Mark information on a map to find out where people died or did not die.
1.Why is there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street
These families had not drunk the water from the Broad Street pump.
2.Why did John Snow have the handle of the pump removed
He had the handle of the pump removed so that it could not be used
The truth was that the water from the Broad Street pump had been infected by waste.Moreover, Snow was later able to show a link between other cases of cholera and the different water companies in London. Some companies sold water from the RiverThames that was polluted by raw waste. The people who drank this water were much more likely to get cholera than those who drank pure or boiled water.
What caused the outbreak of cholera in London in 1854
Water companies sold water from the River Thames that was polluted by raw waste, causing people who drank this water to get cholera.
find supporting evidence
Find other evidence to confirm the conclusion.
Through Snow's tireless efforts, water companies began to sell clean water, and the threat of cholera around the world saw a substantial decrease. However, cholera is still a problem. Each year, millions of people around the world get cholera and many diefrom it. Fortunately, we now know how to prevent cholera, thanks to the work of JohnSnow. Moreover, in his use of maps and statistics, Snow transformed the way scientists study diseases. For this reason, Snow is considered the father of modern epidemiology.
What contributions did John Snow make
1) Water companies began to sell clean water.
2) The threat of cholera around the world decreased.
3) He helped people know how to prevent cholera.
4) Snow transformed the way scientists study diseases.
draw a conclusion
The water is to blame. The source of all drinking water should be examined so that it is safe.
multiple deaths
happened here.
No death happened here.
The water from the pump
was to blame.
Public house
Clue: free beer from public house
Result:
The water came from the river which had been polluted by the dirty water from London.
adj.数量多的
It was believed that cholera was caused by _______ or germs in __________.
The pump water carried ___________.
Many deaths occurred near the ______________ in Broad Street.
Some people who lived near the pump worked in the pub and _________ drunk the water from the pump ,and lived.
A woman and her daughter had died after ________________________, because she had the water_________________ every day.
Snow began by _______________ the places where people _________.
Snow had the handle of the pump _________.
bad air
food or water
marking
died had
lived
water pump
had not
moving away from Broad Street
delivered to her house
cholera germs
removed
Theories
Process
Evidence
Conclusion
Solution
Summary
Pragmatic analysis
3
1.Why does the author write this passage
2.What attitude does the author hold Find out your supporting evidence.
3.In what order does the passage develop Find out the signposts.
To introduce the process of John Snow’s discovering and defeating the leading cause of Cholera, and to show the significance of questioning mind in scientific reasearch.
The author speaks highly of Snow and his contributions to the world health.
In time order/In the order of research process.
Creative Thinking
4
Suggested answers
★ Prudent(严谨的)attitude
★ a strong desire to explore
★ Critical thinking
★ Scientific research methods
★ Spirit of innovation
Why was it John Snow, not other doctors, who defeated King Cholera
Can you find the evidence from the text to support your opinion
Homework
1.Review what we have learnt today and try to retell the text.
2.Have a discussion on what features may contribute to the success of a scientist and give your reasons. Write it down in 80 words.
JOHN SNOW DEFEATS "KING CHOLERA"
Unit 1
Learning objectives
After this class, you will be able to:
1. figure out the text type and structure
2. obtain and know John Snow and cholera.
3. Form a new understanding of science and scientists by thinking critically.
1
Lead-in
There are some great scientific achievements that have changed the world.
Can you name some of them
What do you know about great scientists
Who wrote a book explaining how animals and plants developed as the environment changed
The Origin of Species
Charles Darwin (1808-1882)
British author
It explains how plants and animals changed over time to fit in with a changing environment.
draw a conclusion
find a problem
make up a question
think of a method
collect results
analyse the results
Find supporting evidence
draw a conclusion
think of a method
collect results
make up a question
find a problem
analyse the results
Find supporting evidence
7 stages in right order
text pattern analysis
2
Reading
Read the whole text quickly and match the main ideas
Para1
Para 2
Para 4
Para 5
John Snow desired to destroy cholera.
John Snow decided to prove the second theory.
Snow began his study by marking on the map
Truth of the infection of cholera
Snow's contributions
Para 3
Text type
Narration
Cholera used to be one of the most feared diseases in the world, until a
British doctor, John Snow, showed how it could be overcome. This illness causes severe diarrhea, dehydration, and even death. In the early
19th century, when an outbreak of cholera hit Europe, millions of people died from the disease. As a young doctor, John Snow became frustrated because no one knew how to prevent or treat cholera. In time, he rose to become a famous doctor, and even attended to Queen Victoria when she gave birth. However, he never lost his desire to destroy cholera once and for all.
What is Cholera
find a problem
Cholera
Snow
It's one of ________________________ in the world, because it causes _______________________________.
_______________________(when), an outbreak of cholera hit _______ milions of people ______________________.
He rose to become _________________ , and even _______________ Queen Victoria when she gave birth..
Snow became ________ because no one knew _________________.
However, he had a desire to __________________ once and for all.
the most feared diseases
severe diarrhoea and dehydration
In the early 19th century
Europe
died from the disease
“King Cholera”
frustrated
how to prevent or
treat cholera
a famous doctor
attended to
destroy cholera
Though being famous, he was still devoted to defeating “King Cholera”
In general, doctors in those days had two contradictory theories to explain how cholera spread. One theory was that bad air caused the disease. Another was that cholera was caused by an infection from germs in food or water. Snow subscribed to the second theory. It was correct, but he still needed proof. Consequently, when an outbreak of cholera hit London in 1854, Snow began to investigate. He discovered that in two particular streets the cholera outbreak was so severe that more than 500 people died in ten days. He was determined to find out why.
1.What happened in 1854
2.How many people died in 10 days
Cholera outbreak hit London.
500
ask a question
Which theory is correct
Snow began by marking on a map the exactplaces where all those who died had lived. There were multiple deaths near the water pump in Broad Street (especially house numbers 16, 37, 38, and 40). However, some households (such as 20 and 21 Broad Street, and 8 and 9 Cambridge Street) had had no deaths. These people worked in the pub at 7 Cambridge Street. They had been given free beer, and so had not drunk the water from the pump. Snow suspected that the water pump was to blame. What is more, in another part of London, a woman and her daughter had died of cholera after moving away from Broad Street. It seemed that the woman liked the water from the pump so much that she had it delivered to her house every day. As a result of this evidence, John Snow was able to announce that the pump water carried cholera germs. Accordingly, he had the handle of the pump removed so that it could not be used. Through this intervention, the disease was stopped in its tracks.
collect data
Mark information on a map to find out where people died or did not die.
1.Why is there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street
These families had not drunk the water from the Broad Street pump.
2.Why did John Snow have the handle of the pump removed
He had the handle of the pump removed so that it could not be used
The truth was that the water from the Broad Street pump had been infected by waste.Moreover, Snow was later able to show a link between other cases of cholera and the different water companies in London. Some companies sold water from the RiverThames that was polluted by raw waste. The people who drank this water were much more likely to get cholera than those who drank pure or boiled water.
What caused the outbreak of cholera in London in 1854
Water companies sold water from the River Thames that was polluted by raw waste, causing people who drank this water to get cholera.
find supporting evidence
Find other evidence to confirm the conclusion.
Through Snow's tireless efforts, water companies began to sell clean water, and the threat of cholera around the world saw a substantial decrease. However, cholera is still a problem. Each year, millions of people around the world get cholera and many diefrom it. Fortunately, we now know how to prevent cholera, thanks to the work of JohnSnow. Moreover, in his use of maps and statistics, Snow transformed the way scientists study diseases. For this reason, Snow is considered the father of modern epidemiology.
What contributions did John Snow make
1) Water companies began to sell clean water.
2) The threat of cholera around the world decreased.
3) He helped people know how to prevent cholera.
4) Snow transformed the way scientists study diseases.
draw a conclusion
The water is to blame. The source of all drinking water should be examined so that it is safe.
multiple deaths
happened here.
No death happened here.
The water from the pump
was to blame.
Public house
Clue: free beer from public house
Result:
The water came from the river which had been polluted by the dirty water from London.
adj.数量多的
It was believed that cholera was caused by _______ or germs in __________.
The pump water carried ___________.
Many deaths occurred near the ______________ in Broad Street.
Some people who lived near the pump worked in the pub and _________ drunk the water from the pump ,and lived.
A woman and her daughter had died after ________________________, because she had the water_________________ every day.
Snow began by _______________ the places where people _________.
Snow had the handle of the pump _________.
bad air
food or water
marking
died had
lived
water pump
had not
moving away from Broad Street
delivered to her house
cholera germs
removed
Theories
Process
Evidence
Conclusion
Solution
Summary
Pragmatic analysis
3
1.Why does the author write this passage
2.What attitude does the author hold Find out your supporting evidence.
3.In what order does the passage develop Find out the signposts.
To introduce the process of John Snow’s discovering and defeating the leading cause of Cholera, and to show the significance of questioning mind in scientific reasearch.
The author speaks highly of Snow and his contributions to the world health.
In time order/In the order of research process.
Creative Thinking
4
Suggested answers
★ Prudent(严谨的)attitude
★ a strong desire to explore
★ Critical thinking
★ Scientific research methods
★ Spirit of innovation
Why was it John Snow, not other doctors, who defeated King Cholera
Can you find the evidence from the text to support your opinion
Homework
1.Review what we have learnt today and try to retell the text.
2.Have a discussion on what features may contribute to the success of a scientist and give your reasons. Write it down in 80 words.