Unit 1 Science and Scientists Reading and thinking 课件 (共16张PPT，内镶嵌视频)人教版（2019）选择性必修第二册

(共16张PPT)
Understand the questioning mind
JOHN SNOW DEFEATS “KING CHOLERA”
Watch the video and leran about the symptoms (症状) of Cholera and how it spread.
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 (症状) of Cholera？
Lead-in
John Snow Defeats“King Cholera”
Who
How
What
He was a British doctor.
It used to be one of the most feared diseases in the world and millions of people died from it in the early 19th century.It causes severe diarrhoea,dehydration ,and even death.It begins in the stomach and a severe case can lead to death without immediate treatment.
He conducted research and found out how cholera spread.
Lead-in
Discuss the following stages of scientific research in groups. What order would you put them in
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
Pre-reading
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
Activity 1 Read for the main idea and check predictions.
Who
What
How
How
Read Para. 1 and finish the information cards
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
Para 1: Introduction
2. Which theory is correct
Theory one:
caused by ________
Theory two:
caused by _______

bad air
germs
John Snow subscribed to the ________ theory.
second
Para 2: Find a problem and ask a question
More proof is needed
Detailed-reading
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
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
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.
What’s the evidence
for Snow’s suspecting
What’s the conclusion
Para 4: Truth
Detailed-reading
He helped people know how to prevent cholera.
He transformed the way scientists study diseases by using maps and statistics
Water companies began to sell clean water
The threat of cholera around the world saw a substantial decrease
Snow is considered the father of modern epidemology
What contributions did John Snow make to science
Detailed-reading
Order Stage Key words or sentences
1 Find a problem two contradictory theories
2 Ask a question in two particular streets the cholera outbreak was so severe
find out why
3 Think of a method marking on a map
4 Collect data house numbers 16 37 38 40
20 and 21Broad Street 8 and 9 Cambridge Street
5 Analyse the results Multiple deaths near the water pump some households had had no deaths
6 Find the supporting evidence a woman and her daughter had died
the woman liked the water she had delivered it to the house
7 Draw a conclusion As a result of the evidence, John Snow was able to announce that the pump water carried cholera germs
Detailed-reading
John Snow desired to ________ cholera.
John Snow decided to prove __________ theory.
Snow began his study by ___________________.
________________ of the infection of cholera.
Para. 1
Para. 2
Para. 3
Para. 4
The results and the _____________of Snow’s work.
Para. 5
What &Who
How
The truth
Activity 2 Reading fot the structure
Results
destroy
the second
marking on a map
The truth
significance
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
conclusion evidence process solution theories
map
from the pump
Activity 3 Reading for analysis
语篇主题以及内容(What) 1.What is the main idea of the passage
2.What is the order of the passage
3.What science spiritcan you learn from Snow
语篇主题意义(why) 1.What is the writing purpose of the passage
2.What is the writer’s attitude towards Snow
语篇组织特征(how) How is the langage used in the passage
The main idea of the passage is to introduce the proces
2..The procedure of scientific research
3.innovative ,cautious,scientific,critical,exploratory
1.Encourage teenagers to be acrious about Science
2.Admirable,praiseworthy
1.describe Snow’scharacter : never lose desire to destroy cholera once and for all tireless effort
2.describe cholera :one of the most feared disease in the world.It causes severe diarrhoea and even death. It is so severe that millions of peoplpedie from it.
3.describe the research process: mark on the map suspect be to balme what’s more as a result of accordingly ,have sth done,be stopped in its track
4.describe the truth be infected raw waste by moreover a link between be polluted by raw waste be likely to get sth drink pure water or boiled water
5.describe the current situation(现状）of cholera
still a problem fortunately know how to prevent
Reading for analysis