人教版（2019）选择性必修 第二册Unit 1 Science and Scientists Reading and Thinking 课件(共37张PPT 含听力音频)

(共37张PPT)
How would you describe the photo
What scientific equipment can you see
Would you like to work in such a field in the future
What qualities do you need to be a scientist
John Snow Defeats “King Cholera”
Who
How
What
Reading and thinking
John Snow
“King Cholera”
HOW TO PLAY
How to Play
Help [John Snow] defeat
[King Cholera]
Finish the task to collect the items
[King Cholera]
London Good place! Let’s play in London!
[John Snow]
(Frustrated) So many deaths… No one knew how to prevent or treat cholera…
No… I should never give up. I must destroy cholera, once and for all!
But how can I start Maybe I should make clear the stages of the research first…
Task 1: Prediction
Discuss the following stages of scientific research in pairs:
What order would you put them in
Task 1:
Prediction
Please help me put them in correct order.
Stages of Scientific Research
find a problem
draw a conclusion
collect data
ask a question
find the supporting evidence
analyze the results
think of a method
Mission completed!
You got an
[uncompleted guidebook]!
[John Snow]
Now I’m more clear about how to defeat cholera.
But as a Chinese saying goes, “know the enemy and know yourself and you can fight a hundred battles with no danger of defeat.(知己知彼，百战不殆)”
Please help me know more about myself and my enemy, King Cholera.
Enter Task 2
Task 2: Scanning
Read Para.1 and fill in the 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
severe diarrhoea, dehydration, and even _________
the most feared diseases
death
Britain
Millions
A famous _______ (who even attended to _____
_______ when she gave birth)
doctor
Queen
Victoria
To destroy cholera once and for all.
vomiting
diarrhoea
dehydration
Cholera：A disease that has claimed millions of lives since the 19th century. It has had 7 severe outbreaks in history.
[John Snow]
One of the most feared disease… What causes it Maybe I should get some inspiration from others’ opinions.
Enter Task 3
Task 3: Read & Choose
Read Para.2 and choose the correct theory.
Task 3:
Read & Choose
In general, doctors in those days had two contradictory theories to explain how cholera spread. One theory was that bad air caused the disease. The other 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 is till 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.
The first theory
The second theory
Which theory should I choose
Mission completed!
You got an
[unmarked map]!
[John Snow]
A map A map… Yes! I can draw a map! Let me see…
Enter Task 4
(Snow began by marking on a map the exact places where all those who died had lived.)
It seems that I got some clues…
Task 4:
Read the map
Task 4: Read the map
Observe the map and analyze it with questions.
Task 4:
Read the map
Please help me analyze the map with questions.
1.What does “—” mean How about PH
2. Which house numbers had more than four deaths in Broad Street
3. Which house numbers had no deaths in Broad Street
4. Why some households (2o, 21, 8 and 9) had no deaths
6. What’s your deduction/assumption
The water pump was to blame.
5. What’s the similarity among the houses in Broad Street that had multiple death
Mission completed!
You got a [marked map]!
Please help me find more evidence.
What is more, in another part of London, a woman and her daughter had died of cholera…
[John Snow]
The water pump is to blame! Now I am able to announce that the pump water carried cholera germs.
Enter Task 5
Here it is. Let my try to combine and complete the guidebook…
Task 5: Careful reading
Work in groups. Read para 2&3, find the sentences corresponding to the 7 steps to complete the guidebook.
Task 5:
Careful reading
Task 5:
Careful
reading
Please help me complete the guidebook.
Order Stage
1 Fina a problem
2 Ask a question
3 Think of a method
4 Collect data
5 Analyze the results
6 Finding supporting evidence
7 Draw a conclusion
Key words
or sentences
Two _______________ theories
Find out _________
Marking on a map
______________________________________________________________
Multiple deaths near the _________________
_____________________had the water delivered to her house
The pump water carried
_______________.
cholera germs
contradictory
why
16,37,39,40;
20,21,8,9;
water pump
An infected woman
No deaths
Multiple deaths
Mission completed!
You got a
[completed guidebook]!
Then what is the truth
Accordingly, John Snow had the handle of the pump removed so that it could not be used. Through this intervention, the disease was stopped in its tracks...
Enter Task 6
Task 6: Careful reading
Read para 4, and find the truth of the infection.
Task 6:
Careful reading
Task 6:
Careful reading
Please help me finish the announcement.
The truth was that __________
______________________________
Moreover, there is a link between _______________ and ______________________________.
Some companies sold water_________________________________________.
The people who drank this water were ____________________
____________________________________________________________
the water from the Broad Street pump had been infected by waste.
other cases of cholera
the different water companies in London.
from the River Thames that was polluted by raw waste
much more likely to get cholera than those who drank pure or boiled water.
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 die from it. Fortunately, we now know how to prevent cholera, thanks to the work of John Snow. 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.
Read for Details (Para. 4-5)
What contributions did John Snow make
Water companies began to sell clean water.
The threat of cholera around the world decreased.
He helped people know how to prevent cholera.
Snow transformed the way scientists study diseases.
The Father of Modern Epidemiology
Task 7: Discussion
Discuss in groups about this question:
What made John Snow defeat King Cholera
Task 7:
Discussion
Task 7:
Discussion
What made John Snow defeat King Cholera (e.g. qualities, mindset, spirit…)
It was …that made him defeat cholera, since… (supporting details in the passage)
I believe that...helped him defeat cholera because…
Mission completed!
You got a
[science medal]!
CONGRATULATIONS!
You got a
[scroll]!
To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks the real advance in science.
—Albert Einstein & Leopold Infeld
After Reading
1. Fill in the blanks according to the text.
In the early 19th century, an outbreak of cholera hit Europe, _______ (cause) millions of deaths. seeing this, John Snow became frustrated because no one knew how ________ (prevent) or treat cholera. At that time, doctors had two theories to explain how cholera spread. One was that bad air caused the disease and another was that cholera was caused by germs in food or water. John discovered that in two particular streets ____ cholera outbreak was ____ severe that over 500 people died in ten days. Through his serious ____________ (investigate), he found it was the pump water in Broad Street _______ resulted in the disease. Therefore, he had the handle of the pump ________ (remove) .It turned out that the water from the pump _____________ (infect) by waste. Through Snow's tireless efforts, water companies began to sell clean water ,and the threat of cholera around the world saw _____ substantial decrease.Snow transformed the way __________ scientists study diseases. For this reason, he is considered the father of modern epidemiology.
causing
to prevent
the
so
investigation
that
removed
had been infected
a
that/in which
After the containment of cholera, the British government held a press conference in which John Snow is to answer questions raised by different reporters.
1. Reporters: raise at least 3 questions regarding information about how John Snow defeated Cholera.
2. John Snow: give answers by using the infrormation from the text as well as your own understanding and interpretation.
3. Present your questions clearly and behave politely.
Press conference:
1. What was the most important tool Snow used to defeat cholera What common medical tools, e.g. a microscope, didn't he use Why
2. Why was it John Snow , rather than other doctors, that defeated cholera
Was cholera defeated completely
How to prevent the cholera
How can we prevent cholera
Drink and use safe water
Wash your hands often
Use toilets
Cook raw food thoroughly, keep it covered, eat it hot
Clean up safely
Homework
What are the characteristics of a critical thinker
Can you think of any famous scientists or individuals around us who exhibit critical thinking Describe him or her orally.
Logical reasoning, open-mindedness, curiosity, questioning mind, skepticism, effective communication, problem-solving skills, analytical thinking, systematic approach...
brave, persistent, resilient,self-assured, humble
Homework
What are the characteristics of a critical thinker
Can you think of any famous scientists or individuals around us who exhibit critical thinking （Write a short essay）
Logical reasoning, open-mindedness, curiosity, questioning mind, skepticism, effective communication, problem-solving skills, analytical thinking, systematic approach...
brave, persistent, resilient,self-assured, humble
After Reading
1. Fill in the blanks according to the text.
In the early 19th century, an outbreak of cholera hit Europe, _______ (cause) millions of deaths. seeing this, John Snow became frustrated because no one knew how ________ (prevent) or treat cholera. At that time, doctors had two theories to explain how cholera spread. One was that bad air caused the disease and another was that cholera was caused by germs in food or water. John discovered that in two particular streets ____ cholera outbreak was ____ severe that over 500 people died in ten days. Through his serious ____________ (investigate), he found it was the pump water in Broad Street _______ resulted in the disease. Therefore, he had the handle of the pump ________ (remove) .It turned out that the water from the pump _____________ (infect) by waste. Through Snow's tireless efforts, water companies began to sell clean water ,and the threat of cholera around the world saw _____ substantial decrease.Snow transformed the way __________ scientists study diseases. For this reason, he is considered the father of modern epidemiology.
causing
to prevent
the
so
investigation
that
removed
had been infected
a
that/in which
After Reading
Discover artemisnin to treat malaria,
awarded the Nobel Prize
Father of hybrid rice
keep people away from hunger
Despite the danger of infection, devote to the research of COVID-19
What qualities and scientific spirits do they have in common
strong sense of social responsibility
knowledgeable
courage to face difficulties
Discussion
committed
critical thinking
creativity
questioning mind
care for life