Unit 1 Science and Scientists Reading and Thinking课件(共20张PPT，内镶嵌视频和音频)-2025-2026学年高中英语人教版（2019）选择性必修

(共20张PPT)
JOHN SNOW DEFEATS
“KING CHOLERA”
Unit1 Science and Scientists
Reading and Thinking
Lead in
the stages of scientific research
(科学研究步骤)
epidemics(流行病)
malaria(疟疾)
Lead in
COVID-19(新冠)
cholera(霍乱)
19th century
Sickness恶心
Diarrhoea腹泻
Dehydration脱水
1. Get information about how John Snow defeated cholera;
2. Figure out the stages for John Snow's scientific research;
3. Talk about the significance of John’s work and his qualities and scientific spirits.
Learning Objectives
Find a problem
发现问题
Ask a question
提出问题
Think of a method
思考方法
Collect data
收集数据
Analyse the results
分析结果
Find supporting evidence
寻求更多证据
Draw a conclusion
得出结论
7 stages of Scientific Research 科学研究7个步骤
Pre-reading
Pre-reading
It is a deadly disease which is hard to cure.
John Snow Defeats “ King Cholera”
What’s the main idea of the passage
A. How John Snow found the cause of cholera and defeated it.
B. The cause of cholera was polluted water.
C. The source of all drinking water should be examined.
D. John Snow was a well-known doctor in London.
D.John Snow wanted to use his knowledge to solve cholera.
B.He needed to prove the second theory was correct.
A.John began his study by marking on the map & the process.
E.He finally found out that dirty water was the cause of cholera.
C.John Snow made great contributions to modern epidemiology.
Who
What
While-reading
Para1
Para 2
Para 3
Para 4
Para 5
Read for the main idea and check predictions.
While-reading
Para 1 Who & What
John Snow
Cholera
A famous _______ (who even attended to ______________when she gave birth)
Desire:_______________________________
Country:____________
To destroy cholera once and for all
one of __________________diseases
causes severe _____________ _________________________
millions of people __________
the disease in the early 19th century
the most feared
diarrhoea, dehydration and even death
died from
doctor
Queen Victoria
Britain
Para.1
Cholera
Can you help me defeat cholera together
Sure!
Sorry.
While-reading
1. What did he discover
2. Which stages does this paragraph include
Two contradictory theories
Theory one:
caused by ________
Theory two:
caused by _______

bad air
germs
The other was that cholera was
Para.2
Snow subscribed to theory _____.
two
1 Find a problem
2 Ask a question
Find a problem
发现问题
Ask a question
提出问题
Think of a method
思考方法
Collect data
收集数据
Analyse the results
分析结果
Find supporting evidence
寻求更多证据
Draw a conclusion得出结论
7 stages
We must find out
the reason!
Let’s go!
Exercise
A: It was believed that cholera was caused by bad ____ or germs in _______________.
B:Snow____________the places where the people who ____ had lived
C:Many deaths occurred near the __________ in Broad Street.
Some people __________ drunk the water from the pump, and lived.
A woman and her daughter died in another part of London after _____________________.
D: The pump water carried
__________.
Match the following headers with the letters from the chart above. Write A-E in the blanks.
conclusion
evidence
handle
process
solution
theories
Read paragraph 3 and complete the chart below.
E: The _______ of the pump was removed.
air
food or water
marked on
died
water pump
hadn’t
drinking water from the pump
cholera germs
Para.3
While-reading
What method did he use
How did he finally find out why
marking on a map
Analyze the map
and circle the key areas with your group members.
1.Which houses had more than 4 deaths in Broad Street
2.Which houses had no death in Broad Street
Read for the information.
Para.3
They drunk the water from the pump.
They drunk free beer from the Public house.
pub
multiple deaths
happened near
the water pump.
16, 37, 38 and 40
14, 20, 21, 25, 27, 28 and 34
Aha! I suspect that the water pump was to blame!!
But I still need more evidence...
Let’s continue!
While-reading
Is there any other evidence
conclusion
solution
Read for the information.
Para.3
She had the water from the pump delivered to her house every day.
Yes! We got it! It’s the pump water that carried the cholera germs! So proud of us!
That’s so cool!
Read for the stages.
Think of a method
Collect data
Analyse the results
Find supporting evidence
Draw a conclusion
Find a solution
While-reading
Find a problem
发现问题
Ask a question
提出问题
Think of a method
思考方法
Collect data
收集数据
Analyse the results
分析结果
Find supporting evidence
寻求更多证据
Draw a conclusion得出结论
7 stages
What scientific spirits can we learn from John Snow, according to the passage
Please discuss with your group members, and give your reasons in brief.
hard-working patient wise knowledgeable(博学的)
devoted(全心全意的) creative(创新的) reliable calm (冷静的)
stubborn(顽强的) generous(慷慨的) responsible rigorous(严谨地) imaginative(富于想象力的) determined(坚定的)
innovative a questioning mind(质疑精神)
Group-work
Post-reading
Post-reading
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& Leopold Infeld
提出新的问题，发现新的可能，从新的角度审视已存在的问题，这些需要创造性的想象力，并标志着科学的真正进步。
—阿尔伯特·爱因斯坦 &利奥波德·英费尔德
Quote：
Find a problem
发现问题
Ask a question
提出问题
Think of a method
思考方法
Collect data
收集数据
Analyse the results
分析结果
Find supporting evidence
寻求更多证据
Draw a conclusion
得出结论
7 stages
of Scientific Research
科学研究7个步骤
Summary
hard-working patient wise knowledgeable(博学的)
devoted(全心全意的) creative(创新的) reliable calm (冷静的) stubborn(顽强的) generous(慷慨的) responsible rigorous(严谨地) imaginative(富于想象力的) determined(坚定的)
innovative
a questioning mind(质疑精神)
Homework
1.Read Para.4&5 to find out the truth that caused the outbreak of cholera in London, and the contributions that John Snow made to defeating cholera.
2.Read the passage about the biology(生物学)， and try to summarize the stages of the scientific research in this passage.
See You!