人教版(2019)选择性必修 第二册Unit 1 Science and Scientists Reading and Thinking课件(40张ppt)

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名称 人教版(2019)选择性必修 第二册Unit 1 Science and Scientists Reading and Thinking课件(40张ppt)
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资源类型 教案
版本资源 人教版(2019)
科目 英语
更新时间 2023-02-07 17:52:41

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教学目标:
经过本课学习,学生能够:
1. 获取梳理文中有关 John Snow 本人和他调查并阻止霍乱蔓延的
事实性信息。;
2. 阅读 John Snow 探究霍乱病源的记叙文,结合 John Snow 的研究;
过程梳理科学研究的基本步骤,思考 John 身上所体现的科学精神
品质;
3. 能够概括文本内容。
教学重点:正确理解并准确找出文中的科学研究基本步骤;
教学难点:引导学生寻找科学研究基本步骤的关键词组或句子。
Unit 1 Science and Scientists
Lesson 1 Reading and Thinking(1)
1. What can you see in the photo?
Two girls are conducting an experiment in a school science laboratory, probably to test a theory, verify results, collect data, or develop skills needed in scientific research.
2. What qualities do Einstein and Infeld think a scientist should have?
To solve a scientific problem, one not only requires some degree of technical skill but also needs the ability to ask questions and to see things in a new way.
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 and Leopold Infeld
Other qualities: hard-working, patient, passionate, enthusiastic, devoted...
Learning Objectives
1. understand the importance of a questioning mind by analyzing John Snow’s
scientific spirits.
2. understand how John Snow defeated “King Cholera” by finding stages of
scientific research.
3. summarize the text after catching details by scanning and skimming and
reviewing its main idea.
What disease can you think of when you look at these pictures?
COVID-19
Besides coronavirus, what other kinds of epidemics(流行病)do you know?
Bird-flu
malaria
plague(鼠疫)
Ebola
Smallpox(天花)
Cholera
Reading and Thinking
on Page 2
John Snow Defeats “King Cholera”
John Snow Defeated “King Cholera”
What is Cholera?
Who is John Snow?
How did he defeat Colera?
What will be talked about from the title?
Cholera was one of the most feared
diseases in the world.
{5C22544A-7EE6-4342-B048-85BDC9FD1C3A}What is cholera?
What harm does cholera do to people?
Why is it called “King Cholera”?
Cholera causes severe diarrhoea(腹泻),
dehydration(脱水) and even death.
Because it was so powerful that it killed millions of people during one outbreak alone and it causes other deadly illnesses.
What is cholera?
Who is John Snow?(Para.1)
A young British who even
Queen Victoria when
she gave birth.
He had a desire to .once
and for all.
doctor
attended to
destroy cholera
take care of/look after
The following are seven steps of scientific research.
What order would you like to put them in?(Activity 1 on page 2)
analyze the results
ask a question
draw a conclusion
collect data
find a problem
find supporting evidence
think of a method
How did John Snow defeat “King Cholera”?
How: Research Steps
Step 1
It was believed cholera was caused by or germs in _____________.
How: Research Steps
Step 1
It was believed cholera was caused by or germs in _____________.
bad air
food or water
find a problem
Step 2
Snow was determined to find out .
.
How: Research Steps
Step 1
It was believed cholera was caused by or germs in _____________.
food or water
find a problem
Step 2
Snow was determined to find out .
.
why the outbreak was so severe in two particular streets
ask a question
Step 3
Snow the places where the people who
had lived.
marked on a map
died
think of a method
(Para.3)
Watch a video about John?Snow and the Cholera .
BROAD STREET
What kind of map is it?
It’s Snow’s cholera map.
What does “—” mean?
It means one death.
What does “PH” mean?
It means public house, a house such as bar or pub where alcoholic drinks are sold to the public.
What does 30, 31,...refer to?
They refer to numbers of houses.
Step 4
The number of deaths in different households was recorded.
collect data
图片来源于网络
multiple deaths
happened here.
No death happened here.
The water from the pump
was to blame.
Public house
Clue: free beer from public house
adj.数量多的
Step 5
Multiple deaths occurred near the in Broad Street, while some people who ______ drunk the water from the pump, lived.
analyze the results
pump
hadn’t
Step 6
find supporting evidence
图片来源于网络
Step 7
draw a conclusion
What is the result of John Snow’s research?
The pump water carried cholera germs, the handle of the pump was removed, and the disease was stopped in its tracks.
handle
(Para.3)
Check your order (Activity 1 on page 2)
analyze the results
ask a question
draw a conclusion
collect data
find a problem
find supporting evidence
think of a method
6
5
4
3
2
1
7
Challenge your short memory
Read paragraph 2 & 3 again, close your book, and complete the chart below.
(Activity 3 & 4 on page 3)
air
food or water
marked on a map
died
water pump
hadn’t
drinking
water from the pump
cholera germs
handle
air
food or water
marked on a map
died
water pump
hadn’t
drinking
water from the pump
cholera germs
handle
Match the following headers with the letters(A-E) from the chart below.
1 conclusion . 2 evidence . 3 process . 4 solution . 5 theories .
A
E
B
C
D
What caused the outbreak
of cholera in London in 1854?
What contributions did
John Snow make to science?
The cholera was caused by the water which came from the River Thames and had been infected by waste.




(Para.4)
(Para.5)
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 street _____ 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) .
causing
to prevent
the
so
investigation
that
removed
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.
Fill in the blanks according to the text.
had been infected
that / in which
a
Homework: summarize
Your friend Jack is interested in John Snow defeats “King Cholera”.
Please write a summary (about 80 words) of the passage for him.

What is cholera ?
Who is John Snow?
How did John Snow defeat “King Cholera”?
What contributions did
John Snow make to science?
Review
Cholera, causing death and other severe illnesses, used to be one of the most scared diseases in the world, until a young British doctor, never losing his desire to defeat cholera, showed how it could be overcome. At first, it was believed cholera was caused by bad air or germs in food or water. Snow subscribed to the latter. When an outbreak struck London in 1854, Snow determined to find out why the outbreak was so severe in two particular streets. Then Snow marked on a map the places where the people who died had lived. On the map the number of deaths in different households was recorded and multiple deaths occurred near the pump in Broad Street, while people who hadn’t drunk the water from the pump, lived. What’s more, a woman and her daughter had died of cholera because they had the water delivered to their house after moving away. As a result, it was proved that the pump water carried cholera germs and the handle was removed. Consequently, the truth was that the water which came from the River Thames had been infected by waste. Thanks to Snow’s tireless efforts, the threat of cholera dropped substantially, people now know how to protect themselves from getting cholera. Snow changed the way scientists study diseases so he is regarded as the father of modern epidemiology.
One sample
How to write a summary
Tip 1 Analyze the structure
Tip 2 Find topic sentences and key phrases
Tip 3 Replace the words with similar expressions
Tip 4 Use proper linking words
Tip 1 Analyze the structure
Who & What
How to defeat
Truth
Achievements
Please divide the passgae into four parts.
Tip 2 Find topic sentences
and key phrases
Part 1 (Para.1)
Cholera, causing death and other severe illnesses, used to be one of the most feared diseases in the world, until a young British doctor who never lost his desire to destroy cholera showed how it could be overcome.
Tip 3 Replace the words with similar expressions
participial phrases(分词短语)
attributive clause(定语从句)
Tip 2 Find topic sentences
and key phrases
Part 1 (Para.1)
Cholera, causing death and other severe illnesses, used to be one of the most feared diseases in the world, until a young British doctor who never lost his desire to destroy cholera showed how it could be overcome.
Tip 3 Replace the words with similar expressions
Cholera, causing death and other severe illnesses, used to be one of the most scared diseases in the world, until a young British doctor never losing his desire to defeat cholera showed how it could be overcome.
Part 2 (Para.2-3)
First...Second...Third...At last...
At first...Then...What’s more...Moreover...As a result...
Tip 4 Use proper linking words
Part 2 (Para.2-3)
At first, It was believed cholera was caused by bad air or germs in food or water. Snow subscribed to the latter. When an outbreak hit London in 1854, Snow determined to find out why the outbreak was so severe in two particular streets. Then Snow marked on a map the places where the people who died had lived. On the map the number of deaths in different households was recorded and multiple deaths occurred near the pump in Broad Street, while people who hadn’t drunk the water from the pump lived. What’s more, a woman and her daughter had died of cholera because they had the water delivered to their house after moving away. As a result, it was proved that the pump water carried cholera germs and the handle was removed.
.
Part 3 The truth was that the water which
came from the River Thames had been
infected by waste.
Part 4 Thanks to Snow’s tireless efforts, the threat of cholera dropped substantially, and people now know how to protect themselves from getting cholera. Snow changed the way scientists study diseases so he is regarded as the father of modern epidemiology.
Tip 3 Replace the words with similar expressions
Tip 4 Use proper linking words
Practice
Tip 2 Find topic sentences and key phrases
(Para.4)
(Para.5)
Cholera, causing death and other severe illnesses, used to be one of the most scared diseases in the world, until a young British doctor, never losing his desire to defeat cholera, showed how it could be overcome. At first, it was believed cholera was caused by bad air or germs in food or water. Snow subscribed to the latter. When an outbreak struck London in 1854, Snow determined to find out why the outbreak was so severe in two particular streets. Then Snow marked on a map the places where the people who died had lived. On the map the number of deaths in different households was recorded and multiple deaths occurred near the pump in Broad Street, while people who hadn’t drunk the water from the pump lived. What’s more, a woman and her daughter had died of cholera because they had the water delivered to their house after moving away. As a result, it was proved that the pump water carried cholera germs and the handle was removed. Consequently, the truth was that the water which came from the River Thames had been infected by waste. Thanks to Snow’s tireless efforts, the threat of cholera dropped substantially, people now know how to protect themselves from getting cholera. Snow changed the way scientists study diseases so he is regarded as the father of modern epidemiology.
One sample
Thank you for listening!