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(共25张PPT)
Defeats “King Cholera”
选必2 Unit 1 Science and Scientists
1. acquire some information about how John Snow defeated cholera;
2. identify the stages of scientific research;
3. discuss the significance of John’s contribution and learn from his qualities and scientific spirits.
In this period, you will be able to:
Learning objectives
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
List the great secientists we’ve learnt.
Tu Youyou
Yuan Longping
Albert Einstein
Lead-in
新型冠状病毒肺炎：Corona Virus Disease 2019， 简称 COVID-19
禽流感：Bird flu 甲流 Influenza A/Flu A
埃博拉 Ebola virus
黑死病：Black death
黄热病：Yellow fever
肺结核：Pulmonary tuberculosis（简称TB）
艾滋病：Acquired Immune Deficiency Syndrome 获得性免疫缺陷综合征 (简称AIDS)
非典：Severe Acute Respiratory Syndromes
重症急性呼吸综合征 (简称SARS)
Besides malaria, what other infectious diseases do you know
Brainstorm
Enjoy a video clip about Cholera
Lead-in
dehydration (缺水)
severe vomiting(呕吐)
diarrhea(腹泻)
It begins in the stomach and a severe case can lead to death without immediate treatment.
What are the symptoms of Cholera？
Discussion
Understand the questioning mind
JOHN SNOW DEFEATS
“KING CHOLERA”
Reading Task 1 Reading for prediction
John Snow Defeats “King Cholera”
According to the title, the story is going to tell us information about...
who is John Snow
what is King cholera
how to defeat cholera
John Snow
“King Cholera”
Defeats
Task 1. Read the title and predict the main idea.
John Snow Defeats “King Cholera”
What does “ King ” imply in the title
The name of cholera
The causes of cholera
Cholera spread fast
Cholera is severe and hard to cure
Who
How
What
The text is mainly about ____________ and ______ he defeated king cholera.
how
John Snow
Task 2 Discuss the stages of scientific research
analyse the results
ask a question
draw a conclusion
collect data
find a problem
find supporting evidence
think of a method
Order
Pairwork
stages of scientific research
7. draw a conclusion
6. find supporting evidence
5. analyze the results
4. collect data
3. think of a method
2. ask a question
1. find a problem
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
Task 3. Read for the main idea for each paragraph and check the research stages
Who
What
How
How
Read Para. 1 and fill in blanks
John Snow
King Cholera
Identity:
Symptoms:
Consequence:
Occupation:
Nationality:
Desire:
one of ________________ in the world
_______ of people died from it when it hit Europe in the early 19th century
_____________________________________
_______ when she give birth)
the most feared diseases
severe diarrhoea, dehydration, and even death
Britain
Millions
A famous _______ (who even attend to _____
doctor
Queen
Victoria
To destroy cholera once and for all.
Detailed reading
Despite his great fame, he was still devoted to defeating “King Cholera”
？
Because of its severity.
Two theories
The first theory
caused by bad air
Cholera was caused by an infection from the
germs in food or water.
The second theory
Find the problem
Two contradictory theories
Snow subscribed to the 2nd theory, but he needed proof.
Para. 2
Step 1
a problem
Step 2
Ask a question
Step 3
Think of a method to defeat cholera
Detailed reading
Read Para. 2 and identify the stages.
What method did he use
How did he finally find out why
marking on a map(cholera 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
They drunk the water from the pump.
They drunk free beer from the Public house.
pub
Finding:
multiple deaths
happened near
the water pump.
16, 37, 38 and 40
14, 20, 21, 25, 27, 28 and 34
Para 3: Think of a method
Detailed reading
Think of a method
Collect data
Analyze the results
Find supporting evidence
Conclusion
solution
Read Para. 3 and find out how Snow defeated cholera.
The cause of a mother and her daughter’s death. (pump water)
conclusion
The pump water carried cholera germs.
solution
Removed the handle of the pump.
Q1: What’s the supporting evidence
Q: 2 What’s the conclusion
Read Para.4 and answer:
Detailed reading
What contributions did John Snow make
Detailed reading
Read Para. 5 and answer:
Why is John Snow considered as the Father of Modern Epidemiology？What qualities and scientific spirits did he have
social responsibility
persistence
questioning mind
critical thinking
passionate
devotion
expert
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
____________.
conclusion
evidence
E: The _______ of the pump was removed.
process
solution
handle
theories
air
food or water
marked on the
died
water pump
hadn’t
drinking water
cholera germs
Read again and complete the chart on Page 3
conclusion evidence process solution theories
map
from the pump
post- reading
Q1. Was cholera defeated completely
How to prevent the cholera or other disease
Drink boiled water.
Remember to wear a mask when going out.
Heat the food left overnight.
Wash your hands often.
Cook raw food thoroughly.
Deal with rubbish timely and properly.
Group Discussion
Q 2：What qualities and scientific spirits do the scientists we’ve learned have in common
strong sense of social responsibility
knowledgeable
courage to face difficulties
committed
critical thinking
creativity
questioning mind
passionate
Group Discussion
imaginative
determined
innovative
1. Read the whole text as fluently as possible;
2. Underline the Predicative Clauses in the text and state their meaning and functions;
3. Finishing “Build up your vocabulary” on P4.
Assignments

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