(共13张PPT)
Unit 1 Science and Scientists
Reading and Thinking
John Snow Defeats “King Cholera”
Lead in
Are you familiar with these situations
Mask up
Get vaccinated
Nucleic acid tests
Positive measures are taken to fight against Covid-19.
Lead in
Besides coronavirus, what other kinds of epidemics(流行病) do you know
Discussion & Cooperation
Task:
the main idea of each paragraph
The exercises of Activity 2 on worksheet
Requirements:
take notes down while discussing
mark the unsolved problems and be ready to put up questions
John Snow Defeats “King Cholera”
Read for the main idea
(who)
Para.1
(how)
Para.2-3
(what)
Para.1
The truth
Para.4
Results and significance
Para.5
John
Snow
cholera
Who A ________ doctor who even attended _______________ when she gave birth.
What He had a desire to ________________ once and for all.
famous
destroy cholera
What It used to be one of_________________________________________
because it causes______________________________________________.
When _____________________________________________________________.
Where _____________________________________________________________.
What consequence Millions of people _______________________________.
the most feared diseases in the world
severe diarrhoea, dehydration and even death
In the early 19th century
Europe
died from the disease
Queen Victoria
“King Cholera” = ________ cholera
deadly
While Reading:
Para.1
background
Stages Key words or sentences
1.
2.
3.
4.
5.
6.
7.
analyse the result
ask a question
draw a conclusion
collect data
find supporting evidence
think of a method
find a problem
While Reading:
Para.2&3
How
two contradictory theories
in two particular street the cholera was so severe ..... find out why
marking on the map
houses number 16,37,38 and 40;
20 and 21; 8 and 9
multiple death near the water pump ; some houses had no death.
a woman and her daughter had died,
the woman liked the water.... had it delivered to her house
John Snow announced that the pump water carried cholera germs.
What caused the outbreak of cholera in London in 1854
The truth was that the water from the Broad Street pump had been infected by waste.Moreover, Snow was later able to show a link between other cases of cholera and the different water companies in London. Some companies sold water from the River Thames that was polluted by raw waste. The people who drank this water were much more likely to get cholera than those who drank pure or boiled water.
reveal the truth
Para.4
Through Snow‘s tireless efforts, water companies began to sell clean water, and the threat of cholera around the word 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.
results and contributions
Para.5
Was cholera destroyed completely?
What contributions did John Snow make to science?
Use your own words to explain JOHN SNOW DEFEATS “KING CHOLERA”.
Who
What
How
Post reading
a famous British doctor who even attended to Queen Victoria when she gave birth.
had a desire to destroy cholera once and for all.
It used to be one of the most feared diseases in the world.
It causes severe diarrhoea, dehydration, and even death.
Millions of people died from it.
At first,… two theories…Snow subscribed to….
Snow discovered that…When an outbreak of cholera hit London in 1854,…
marked…on a map
There were multiple deaths near...
Snow suspected that…
announced…...carried.....
Accordingly… Through this intervention,…
Further thinking:
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. How has John Snow's work affected our daily lives
1.
2.
3.
4.
...
Maps and statistics
While microscopes and other medical tools may be good at recoginzing what the germ is, finding out where the germ comes from and how it spreads is not possible with these tools.
readily available clean water
wash hands after they become dirty
transform the way scientists study diseases
Thinking
What makes John Snow a great scientist What are the common
qualities do great scientist have in common?
responsible
knowledgeable
brave/courageous
committed/devoted/dedicated
critical thinking
creative
questioning mind
passionate
curious
ambitious
determined...
Thank you