人教版（新课程标准）必修五 Unit 1 Great scientists Reading （课件-25张PPT）

(共25张PPT)
Unit 1 Great Scientists
—John Snow Defeats “King Cholera”
After this class, you will be able to:
1. have a better understanding of the cholera ;
2. know the scientific methods to defeat the cholera;
3. express opinions about science and contributions of scientists by critical thinking.
4.use the scientific methods to prevent COVID-19.
Learning aims：
What do you know about great scientist
Warming up
(1) Who wrote a book explaining how animals and plants developed as the environment changed
Marie Curie
居里夫人
C. Charles
Darwin
B. Thomas
Edison
Charles Darwin <1808-1882>, the British author of The Origin of Species.
(2) Who put forward a theory about black holes
Stephen
Hawking
C. Copernicus
（哥白尼）
B. Archimedes
阿基米德
Stephen Hawking <1942- >, a British scientist, has studied black holes in space.
(3) Who invented the earliest instrument(工具) to tell people where earthquakes happened
Charles
Darwin
C. Watt
B. Zhang
Heng
Zhang Heng <78-139>, Chinese, invented the first seismograph（地震仪）.
(4) Who invented the way of giving electricity
to everybody in large cities
Stephen
Hawking 　
C. Thomas
Edison
B. Archimedes
Thomas Edison <1847-1931>, an American inventor.
Gregory Mendel (孟德尔)
['ɡreɡ ri] ['mendl]
(1822-1884)
Czech [t ek] (捷克人)
characteristic [ k r kt r st k]: a typical feature or quality that sth/sb has.
4. Who used peas to show how physica characteristics are passed from parents to their children
He was a doctor.
He faced the challenge of helping
people who were infected with
cholera.
He attended Queen Victoria as
her personal physician.
take care of
1. Who is John Snow
John Snow Defeats “King Cholera”
Task 1. Predict according to the title. (30 sec)
John Snow Defeats the “King Cholera”
Who What How
Who is the main character
What does he do
How does he defeat it
John Snow
Defeating cholera.
Make a scientific research
Pre-reading
Do you know how to prove a new idea in scientific research
How many stages are needed to set out a new scientific idea
Look and think
①find a problem
②make up a question
③think of a method
④collect results
⑤analyze the results
⑥find supporting evidence
⑦draw a conclusion
scientific
research
stages
para1
para2
para3
para4
Para5.6
para7
John Snow wanted to find out the cause of cholera
John Snow tried to seek the evidence and prove his theory
John Snow succeed in defeating “king cholera”
What is the problem
The cholera was the most deadly disease
of its day. Neither its cause, nor its cure
was understood.
What caused cholera
①find a problem
Para.1
while-reading
Idea 1
Idea 2
It suggested that cholera multiplied in the air.
It suggested that people absorbed this disease into their bodies with their meals.
Para.2
②make a question
How did cholera spread
③think of a method
How
Where
Broad Street
Cambridge Street
collect data
Para.3
make investigations
London
④collect results
: over 500 people’s death
Para.4
⑤analyze results
The map gave him a valuable clue
about the cause of the disease.
1. What role did the map play in
finding the cause of the disease
Part of Snow’s Cholera Map
pub
pump
Cambridge Street
Broad Street
No deaths happened here.
2. Where were many of the deaths in Broad Street
3. Why did these houses have no deaths
These families worked in the pub at 7 Cambridge Street. They had been given free beer and so had not drunk the water from the Broad Street pump.
Many deaths happened here.
4. What did Dr. Snow think was responsible for the disease
It seemed that the water was to blame.
Para.5
⑥find supporting evidence
Para.6
A woman had delivered the water from the pump to her house every day.
He asked the people remove the handle from the pump .
Soon afterwards the disease slowed down.
Both she and her daughter died of cholera.
Para.6
⑦draw a conclusion
Para.7
cause of cholera
prevention of cholera
Cholera was spread by polluted water carrying germs.
John Snow
King cholera
battle
Finally “King Cholera” was defeated.
John Snow succeeded.
Post-reading
What makes John Snow’s success
John Snow
scientific research stages
professional knowledge
characteristics
marked on a map
The map helped him his ideas.
The map can show a more direct link
between and deaths.
organize
people s’ drinking habits
...
ADD YOUR TITLE HERE
Group discussion
What should we pay attention to in our daily life in order
not to get infected with the infectious diseases such as Covid-19
Open the windows to let the fresh air in.
Wash hands often
Wear masks
Don’t go to the crowded places.
Exercise as much as possible.
ADD YOUR TITLE HERE
Step 2
找主旨句
Summary
John Snow was a well-known ____ in London in the ___ century. He wanted to find the ______ of cholera in order to help people ______ to cholera. In 1854 when a cholera ____ out, he began to gather information. He _____ on a map where all the dead people had lived and found that many people who had drunk the dirty water from the ______ died. So he decided that the polluted water carried cholera. He suggested that the _____ of all the water supplies be _______ and new methods of _______with polluted water be found. Finally, “King Cholera” was defeated.
doctor
19th
cause
exposed
broke
marked
pump
source
examined
dealing
According to the discussion, design a poster
with your group, introducing Covid-19 to
people, and inform people of the ways to
keep away from getting infected with Covid-19.
Team work
Homework