Unit 1 Science and Scientists Reading and Thinking(课件)-高二英语同步高效课堂(人教版2019选择性必修第二册

(共30张PPT)
Unit 1
人教版2019选择性必修第二册
Science and Scientists
Reading and Thinking
John Snow Defeats “King Cholera”
Lead in
According to these pictures, What kind of disease do you think it is
Do research
COVID-19
Do you know other epidemics
Smallox(天花)
Spanish Flu
(西班牙大流感)
Black Death(黑死病)
Malaria(疟疾)
Cholera
(霍乱)
Lead in
Pre-reading
activity 1:
Read it quickly and find out what order would you put the seven stages in
_____ analyze the results _____ ask a question
_____ Draw a conclusion _____ collect data
_____ Find a problem _____ Think of a method
_____ find supporting evidence
Keys:
draw a conclusion
think of a method
collect data
ask a question
find a problem
analyze the results
Find supporting evidence
7 stages
in right order
Pre-reading
Look at the picture, the title and the map, guess what the content of the text is. Then skim it quickly to see if you are right.
The text is mainly about __________ and _____ he defeated king cholera.
John Snow Defeated “King Cholera”
John Snow
how
While-reading
Let’s watch
While-reading
John Snow (1813-1858), he was an English anesthesiologist(麻醉学家) and epidemiologist(流行病学家) who is considered a pioneer in anesthesiology and public health medicine. He was the first to propose measures to prevent cholera, and his study of the 1854 cholera outbreak in Soho, west London, is considered a pioneer in epidemiological research.
John Snow
While-reading
John Snow Defeated “King Cholera”
Who
How
Where
What
Why
When
While-reading
Let’ watch
While-reading
Let’s get more details
While-reading
Read the text quickly; match the main ideas.
Para1:
Para2:
Para3:
Para4:
Para5:
John Snow decided to prove the second theory.
John Snow desired to destroy cholera.
John Snow’s contributions.
John Snow began his study by marking on the map.
Truth of the infection of cholera.
While-reading
Read For the structure.
Para1:
Para2:
Para3:
Para4:
Para5:
John Snow decided to prove the second theory.
John Snow desired to destroy cholera.
John Snow’s contributions.
John Snow began his study by marking on the map.
Truth of the infection of cholera.
What&Who
How
Truth
Results
While-reading
What
Who
Where
When
What consequence
find a problem
What caused Cholera
While-reading
Careful-reading
Two theories
ask a question
Which theory is right
So he needed to think of a method to prove his opinion.
Careful-reading
A map of Broad Street-“Cholera Map”
What method did Snow use
1. Which houses had more than 4 deaths and which had no death in Broad Street
2.What did Snow conclude
Multiple deaths happened here.
No death happened here.
He suspected that the water from the pump
was to blame.
analyze the results
think of a method
collect data
Careful-reading
Finding Evidence
Place:
Who:
Event:
In another part of London
A woman and her daughter
died of cholera because of drinking the water delivered from the pump
The pump water carried cholera germs
remove the handle of the pump
The disease was stopped
Draw a conclusion
Careful-reading
Read Para 2 and 3 again to complete the chart.
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 had the handle of the pump _________.
A
B
C
D
E
bad air
food or water
water pump
had not
moving away from Broad Street
delivered to her house
cholera germs
removed
Snow began by _________________
the places where people _____________.
marking on the map
died had lived
Supporting evidence
Careful-reading
Read Para 2 and 3 again to complete the chart.
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 had the handle of the pump _________.
A
B
C
D
E
bad air
food or water
water pump
had not
moving away from Broad Street
delivered to her house
cholera germs
removed
Snow began by _________________
the places where people _____________.
marking on the map
died had lived
theories
Supporting evidence
evidence
process
solution
conclusion
Careful-reading
According to the Para4 and Para5 to finish the questions below.
1.What caused cholera’s outbreak in the Broad Street
The truth was that the water from the Broad Street pump had been infected by waste.
2.How were people infected with the virus of cholera
Some companies sold water from the River Thames 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.
Careful-reading
According to the Para4 and Para5 to finish the questions below.
Snow’s contribution:
Fortunately, we now know how to cholera, the work of John Snow. , in his use of maps and statistics, Snow the way scientists study diseases.
Snow’s achievement:
Snow is considered .
prevent
thanks to
Moreover
transformed
the father of modern epidemiology
Careful-reading
John Snow Defeated “King Cholera”
Who
How
What
1. A british doctor
2. A fomous doctor
3. Desire to destroy Cholera once and for all
1.Find a problem
2.ask a question
3.Think of a method
4.collect data
5.analyze the results
6.find supporting evidence
7.Draw a conclusion
1.The most feared disease.
2.causes severe diarrhoea,
dehyrati on and even death.
3.millions of people died from
it.
4.cause and cure unknown
Careful-reading
John Snow was a well-known ________ in London in the ___ century. He wanted to find the ______ of cholera in order to help people __________ it. In 1854 when a choler ____ London, he began to gather information. He _______ on a map ______ all the dead people had lived and he found that many people who had _______ (drink) the dirty water from the ______ died. So he decided that the polluted water _______ cholera. He suggested that the _____ of all water supplies should be _______ and new methods of dealing with _______ water be found. Finally, “King Cholera” was _______.
Fill in the blanks based on the text.
doctor
19th
cause
hit
marked
pump
source
examined
polluted
defeated
infected with
where
drunk
carried
Post-reading
What made John Snow succeed in preventing “King cholera”
(try to find supporting details from the text)
1. expert
as a young doctor, Jhon Snow became frustrated. In time, he rose to become a famous doctor;
2. determined
He never lost his desire to cholera ance and for all;
3. careful/rigorous
He suspected... He was able to announce...
Discussion
What made John Snow succeed in preventing “King cholera”
(try to find supporting details from the text)
4. curious/questioning mind
He discovered that in two particular streets... find out why
5.creative
Use a map to do research
...
Discussion
scientific methods
scientific spirits
scientific success
“To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science.”
― Albert Einstein
Discussion
What qualities and scientific spirits do scientists have in common
strong sense of social responsibility
knowledgeable
courage to face difficulties
committed
critical thinking
creativity
questioning mind
care for life
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Discussion
Questions Yes No
1.Can I find the main idea of this passage？
2.Can I match the paragraph in correct order？
3.Can I focus on the teacher
4.Can I find the answers in the passage
5.Can I use my own word to retall the passage
6.Can I participate in the class actively
7.Can I discuss with partners actively
Reflection
Evaluation sheet
Homework
Tell a story of what you know in your own words according to the scientific research steps in this article.
Thank you