人教版高中英语必修五Unit 1 Great Scientists reading课件(31张ppt)

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名称 人教版高中英语必修五Unit 1 Great Scientists reading课件(31张ppt)
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资源类型 教案
版本资源 人教版(新课程标准)
科目 英语
更新时间 2020-08-27 19:33:42

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Unit 1: Great scientists
Period 2: Extensive reading
Bai Jie
1. Can get some information of great scientists .
2. Can draw the structrue of the whole text by reading skills.
3. Can analyse the detailed information of the reading material.
4. Can know how to prove your new idea in a scientific research.
5. Can learn the good qualities form the great scientists and?develop?the?noble?spirits .
Learning objectives:
Learning steps
? Warming up
?Pre-reading
?While reading
?Post reading
Step1:Warming up
There are some great scientific achievements that have changed the world. Now try to answer the following questions to guess who are they.
1.Which scientist discovered that objects in water are lifted up by a force that helps them float?
Archimedes
(Greek )
2.Who used peas to show how physical characteristics are passed from parents to their children?
Gregor Mendel
Czech (捷克人)
Marie Curie (Polish&French)
3. Who discovered radium?
4.Who invented the earliest instrument to tell people where earthquakes happened?
Zhang Heng (Chinese)
seismograph
Yuan Longping.
He is …
5.Who is the father of Super Hybird Rice?
Tu Youyou.
She is …
6. Who discover the artemisinin(青蒿素)to cure the patients of malaria(疟疾)。
7. They try to defeat the Covid-19 in China and make great contributions for our country.
Who are they?
They are …
Li Lanjuan &Zhong Nnanshan
Step 2: Pre-reading
will defeat
Pre-reading
scientific
research stages
find a problem
make up a question
think of a method
collect results
analyze the results
find supporting evidence
draw a conclusion
great
scientists
draw a conclusion
find supporting evidence
find a problem
make a question
think of a method
collect results
analyse the results
think of a method
collect results
make a question
find a problem
analyse the results
draw a conclusion
How to prove a
new idea in scientific
research?
find supporting evidence
John Snow defeats “king cholera”
What can you learn from the title?
who
how
deadly
while--reading
Fast reading
John Snow,(1813-1858) British, is an anesthetist(麻醉师) and more importantly , “ Father of epidemiologist (流行病学家)”.
Name of illness
cholera (霍乱)
Symptom(症状)
severe vomiting (呕吐) and diarrhea (腹泻)
Aftereffect(后果)
die quickly from a loss of liquid
What is cholera?
1
2
3
4
5
6
7
What’s the main idea of the passage?
John Snow was a well-known doctor in London.
The cause of Cholera was polluted water.
The source of all drinking water should be examined.
How John Snow collected, analyzed data and found the cause of the disease and solved it .
Fast reading
d
draw a conclusion
think of a method
collect results
make a question
find a problem
analyse the results
Find supporting evidence
7 stages of a scientific research.
发现问题
提出问题
提出方法
收集资料
分析资料
找出有力证据
得出结论
how to defeat
1
2
3
4
5
6
7
find a problem
make a question
think of a method
collect results
analyse the results
find supporting evidence
draw a conclusion
analyze the results

1. John Snow was a famous doctor in London—so expert,indeed,that he attended Queen Victoria as her personal physician.But he became inspired when he thought about helping ordinary people exposed to cholera.This was the deadly disease of its day.Neither its cause nor its cure was understood.So many thousands of terrified people died every time there was an outbreak.John Snow wanted to face the challenge and solve this problem.He knew that cholera would never be controlled until its cause was found.
1. Find a problem
2. He became interested in two theories that possibly explained how cholera killed people.The first suggested that cholera multiplied in the air.A cloud of dangerous gas floated around until it found its victims.The second suggested that people absorbed this disease into their bodies with their meals.From the stomach the disease quickly attacked the body and soon the affected person died.
2. Make a question
how many theories are mentioned in para.2?
what are they?

John Snow suspected that the second theory was correct but he needed evidence.So when another outbreak hit London in 1854,he was ready to begin his enquiry.As the disease spread quickly through poor neighbourhoods,he began to gather information.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.
3. Think of a method
4. First he marked on a map the exact places where all the dead people had lived.This gave him a valuable clue about the cause of the disease.Many of the deaths were near the water pump in Broad Street(especially numbers 16,37,38 and 40).He also noticed that some houses(such as 20 and 21 Broad Street and 8 and 9 Cambridge Street) had had no deaths.He had not foreseen this,so he made further investigations.He discovered that these people worked in the pub at 7 Cambridge Street.They had been given free beer and so had not drunk the water from the pump.It seemed that the water was to blame.
4. collect resluts
what did he find in the map?
what was the possible result?
A map of Broad Street
Broad Street
Many deaths happened here.
No death happened here.
It seemed the water from the pump was
to blame. What did he do next?
Pub
5. Next,John Snow looked into the source of the water for these two streets.He found that it came from the river polluted by the dirty water from London.He immediately told the astonished people in Broad Street to remove the handle from the pump so that it could not be used.Soon afterwards the disease slowed down.He had shown that cholera was spread by germs and not in a cloud of gas.
What happened to the pump water?
2. what happened after people removed the handle form the pump?
3. What is the result?
3.
5. analyse the results
6. In another part of London,he found supporting evidence from two other deaths that were linked to the Broad Street outbreak.A woman,who had moved away from Broad Street,liked the water from the pump so much that she had it delivered to her house every day.Both she and her daughter died of cholera after drinking the water.With this extra evidence John Snow was able to announce with certainty that polluted water carried the virus.
What ’s the extra evidence?
6. find supporting evidence
7. To prevent this from happening again,John Snow suggested that the source of all the water supplies be examined.The water companies were instructed not to expose people to polluted water any more.Finally “King Cholera” was defeated.
What did John Snow do to defeat the king Cholera?
7. draw a conclusion
Post-reading
What makes John Snow’s success?
John Snow
scientific research stages
professional knowledge
characteristics
marked on a map
common characteristics
cautious
persuasive
strict
positive
Co-operative
creative
responsible
have sympathy for the people and nation
Application
The epidemic of Covid-19 in Urumqi is a challenge for us all. How do we defeat it ? Can you make a scientific research by using the 7 scientific stages? Try to write your research following the structure of “John Snow defeats the king Cholera.”