Transcript John Snow defeats “King cholera”

Unit 1
GreatUnit
Scientists
Reading
Warming--up
1.Recently, what disease is
spreading around our
country, especially
GuangDong Province ?
Dengue Fever
What other infectious diseases do you know?
Bird flu, AIDS, SARS, H1N1,Ebola…
If you eat some food that is not fresh……
You may
feel…
？
Maybe you have
Cholera
got ________.
1.Whether you are right or wrong?
2.You need to prove your idea in scientific
research.
draw a conclusion think of a method
collect results
make a question
find a problem
analyse the results
find supporting evidence
find a problem
Put the following
Stages in order
draw a conclusion
think of a method
collect results
make a question
find a problem
analyse the results
find supporting
evidence
make a question
think of a method
collect results
analyse the results
find supporting
evidence
draw a conclusion
Teaching Aims:
1.To learn about John Snow and
cholera.
2.To understand the passage and
develop some basic reading skills
3.To establish healthy daily habits.
John Snow defeats “King cholera”
Listening :
Listen to the text and find the
main idea of the text.
The passage is mainly about:
How John Snow found the cause of
_______________________________
the cholera and defeated it.
________________________
Scanning:
What can you learn from the title?
人物：
事件：
defeats cholera
Read the passage quickly and find the
number below and the relevant(相关的)
happenings in the passage.
Two theories
In 1854
500 , 10
16, 37, 38 and 40
20, 21; 8, 9
7
The first suggested that…multiplied
Two
theories
in the air; The second suggested…
absorbed this disease into their bodies
with their meals.
In 1854
Another outbreak hit London.
More than 500 people had died
500 , 10
in 10 days.
16, 37, 38
and 40
These numbers in Broad Street
near the water pump had many
of the deaths
20, 21;
8, 9
20 and 21 Broad Street and 8 and 9
Cambridge Street had no deaths….
They didn’t drink the water
from the Broad Street pump.
7
These families worked in
the pub at 7 Cambridge Street.
Careful—reading:
Read the passage paragraph by paragraph:
Para. 1: What is the problem?
The cholera was the most deadly disease
of its day. Neither its cause, nor its cure
was understood.
Para 2 : What caused cholera?
Make a question: Which theory to
believe in?
Cholera multiplied in the air without
reason. A cloud of dangerous gas would
float around until it found its victims.
People absorbed it with their meals.
Which one do you believe more?
What about John Snow?
Para3-para4 : Draw a map.
What method did he use?
Public house
Many deaths
happened
here.
A map
of Broad
Street
No death happened here.
It seemed the water from the pump was
to blame. What did he do next?
(Para 5) He looked into the source of
the water…
(Para 6) What was another supporting
evidence?
John Snow was able to announce
with certainty that polluted water
carried the virus.
Match them
find a problem
Para 1
make a question
Para 2
think of a method
Para 3
collect results
Para 4
analyse the results
Para 5
repeat if necessary
Para 6
draw a conclusion
Para 7
Prevention of Cholera
Discussion
Drink boiled water
Wash hands often
What should we pay attention to in our daily
life in order not to get infected
Keep with
awaycholera?
from flies
choose fresh sea food
Keep the kitchen clean
Cook raw food thoroughly
Dispose rubbish properly.
Heat the food left overnight
Summary
1.How John Snow defeated “King Cholera”?
2.Some tips of establishing healthy daily
habits.
Homework:
1. Complete the comprehending 1 on page 3 of your
text book.
2. Fill in the chart on page 1 of mingxiaoxue’an
3.Read the passage by yourself after class.
Careful—reading:
Read the passage and number these events
in the order that they happened.
2
John Snow began to test two theories.
1 An outbreak of cholera hit London in 1854.
4 John Snow marked the deaths on a map.
7
He announced that the water carried
the disease.
3
John Snow investigated two streets where
the outbreak was very severe.
8
King Cholera was defeated.
5
He found that most of the deaths
were near a water pump.
6
He had the handle removed from
the water pump.