(共31张PPT)
Unit 1 Science and Scientists
Reading and Thinking
John Snow Defeats “King Cholera”
By the end of this class, students will
get information about how John Snow defeated cholera;
summarize the stages of scientific research;
talk about the significance and contribution of John’s work
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”
“提出新的问题,发现新的可能性,
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”
1. severe (adj.)
2. frustrated (adj.)
3. infection (n.)
4. subscribe (vi.)
5. multiple (adj.)
6. household (n.)
感染;传染
极为恶劣的;十分严重的;严厉的
懊恼的;沮丧的;失意的
一家人;家庭
认购;定期订购;定期交纳
数量多的;多种多样的
7. suspect (n.&v.)
8. blame (vt.&n.)
9. handle (vt.&n.)
10. intervention (n.)
11. link (n.&vt.)
12. pure (adj.)
责备;指责
处理;把手;柄
介入;出面;干涉
联系;把……连接起来
干净的;纯的;纯粹的
犯罪嫌疑人;怀疑
13 investigate(v)
14 theory(n)
15 transform(v)
16subscribe to
17contradictory(adj)
18 substantial(adj)
调查
相互矛盾的,对立的
大量的,重大的
改变,转变
同意,赞同
理论
Lead in
Are you familiar with these situations
Mask up
Get vaccinated
Self-isolation
Positive measures are taken to fight against Covid-19.
/ a s le n/
/ v ks ne t d/
④
Besides coronavirus, what other kinds of epidemics (流行病)do you konw
bird-flu(禽流感)
malaria [m leri ](疟疾)
plague[ple ɡ]
(鼠疫)
Ebola [ b l ] (埃博拉)
①
②
③
Who Helped Defeat Malaria
Draw a conclusion
Collect data
Ask a question
Find a problem
Analyse the results
Find supporting evidence
Think of a method
Tu Youyou followed the scientific stages to find out the cure for malaria. Can you put them in the right order
Choleara
Add Something At Here
Add Something At Here
Add Something At Here
Add Something At Here
Add Something At Here
Add Something At Here
Cholera
loss of liquid (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.
Pre-reading
John Snow Defeats “King Cholera”
Who
How
What
1. Who was John Snow
2. What is King Cholera
3. How did John Snow defeat King Cholera
Activity 1 Read for the main idea and check predictions
Para1
Para 2
Para 4
Para 5
John Snow desire to destroy cholera.
He decided to prove the second theory was correct.
John began his study by marking on the map .
Finally,he found out the truth of infection of cholera.
John Snow ‘s great contributions .
Para 3
While-reading
Read for the imformation.
Para 1 Who & What
John Snow
Cholera
a ______________________ doctor
became _________
never ________________________ _________ once and for all
British, young and famous
_____________ Queen Victoria
attended to
frustrated
lost his desire to destroy cholera
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
Activity 2 Find the seven stages in Para.2 & 3
Para.2
Stage 1 find a problem
contradictory
to agree with or support an opinion, a theory, etc.
proof
subscribe to
Two contradictory theories
Theory one:
caused by ________
Theory two:
caused by _______
Symptoms
Symptoms
cough
sneeze
runny nose
lung
diarrhoea
dehydration
bad air
germs
Snow subscribed to the second theory.
Para. 2
Find a problem
Activity 2 Find the seven stages in Para.2 & 3
Para.2
Stage 2 ask a question
investigate
determined
to carefully examine the facts or find out the truth or how it happened
Read for the stages.
3.Think of a method
4.Collect data
5.Analyse the results
6.Find supporting evidence
7.Draw a conclusion
8.Find a solution
A map of Broad Street-”Cholera Map”
What method did Snow use
A map of Broad Street-”Cholera Map”
Which houses had more than 4 deaths in Broad Street
Which houses had no death in Broad Street
Multiple deaths happened here.
No death happened here.
He suspected that the water from the pump was to blame.
Think of a method & Collect data & Anayse the results
Para.3
Find supporting evidence & Draw a conclusion
Pump water carried the cholera germs.
Two typical deaths
Place
Person
Event
In another part of London
A woman and her daughter
Died of cholera because of drinking the water delivered from the pump
Remove the handle of the pump
The disease was stopped.
Draw a conclusion
Collect data
Ask a question
Find a problem
Analyse the results
Find supporting evidence
Think of a method
Check predictions
Activity 3 Read for detailed information in Para.1
What It's one of in the world, because it causes
When
Where
What results
the most feared diseases
severe diarrhoea, dehydration
In the early 19th century
Europe
Millions of people died from the disease
Cholera
and even death.
Snow had the_______ of the pump removed.
E
It was believed that
cholera was caused
by _______ or germs in _____________.
A
Snow __________
_______the places where people who
_____ had lived.
B
bad air
food or water
marked on
died
The pump water carried____________.
D
cholera germs
handle
a map
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 ____________ ______________.
C
water pump
had not
from the pump
drinking water
Read from Para. 2-3 again and complete the chart below.
conclusion
evidence
process
solution
theories
conclusion evidence process solution theories
Para. 4-5
Activity 3 Read for detailed information in Para.4 & 5
1. What caused the outbreak of cholera in London
A. Bad air B. Water infected by raw waste
C. Polluted air D. Water polluted by the air
2.Why was John Snow called the father of modern epidemiology(流行病学)
He helped people know how to prevent cholera.
He transformed the way scientists study diseases in use of map and statistics.
In order not to get infected with disease, what should we pay attention to in our daily life.
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.
Post-reading
Qualities
passion
creativity
devotion
selflessness
hard work
What qualities do you need to be a scientist
Post-reading
Evaluation of John Snow
As a scientist, he found out _________________________.
As a doctor, he helped us to ____________________.
what caused cholera
prevent cholera
Thank you