Great scientists
Unit 1
Warming up
What do you know about great scientists? Try this quiz and find out who knows the most?
Are you ready?
Let’s go!
1. Which scientist discovered that objects in water are lifted up by a force that helps them float?
Archimedes
It’s…
Give me a place to stand and I will move the world !
2. Who wrote a book explaining how animals and plants developed as the environment changed?
Charles Darwin
3. Who invented the first steam engine?
James Watt
4. Who used peas to show how physical characteristics are passed from parents to their children?
Gregor Mendel
radium
5. Who discovered radium?
Marie Curie
Thomas Edison
He invented the way of giving electricity to everybody in large cities.
7. Who was the painter that studied dead bodies to improve his painting of people?
Leonardo da vinci
8. Who invented a lamp to keep miners safe underground?
Sir Humphry Davy
9. He invented the earliest instrument to tell people where earthquakes happened.
Zhang Heng
10. Who put forward a theory about black holes?
Pre-reading:
What do you know about infectious diseases?
infectious diseases can spread easily , They may do harm to people , AIDS and SARS are infectious diseases, they are difficult to cure.
infectious diseases :
They can be spread to other people.
They have an unknown cause.
They are difficult to cure.
They need public health care to solve them.
Draw a conclusion
Think of a method
Collect results
Make a question
Find a problem
Analyse results
Find supporting evidence
Put the phrases on page 1 in correct order.
得出结论
找到方法
收集材料
提出问题（形成主题）
发现问题
分析材料
找到确实证据
Think of a method
Collect results
Make up a question
Find a problem
Analyse the result
Draw a conclusion
Find supporting evidence
John Snow defeats “King Cholera”
Reading
A brief introduction of cholera
Broad Street
It begins in the stomach and a severe case can lead to death without immediate treatment.
5oo deaths in 10 days in 1854 in London.
Spread from one person to another.
So it is an infectious Disease.
1. Skimming
What’s the main idea of the passage?
John Snow was a well-known doctor in London.
The cause of Cholera was polluted water.
The source of all drinking water should be examined.
How John Snow collected, analysed data and found the cause of the disease and solved it .
What is the problem?
The cholera was the most deadly disease
of its day. Neither its cause, nor its cure
was understood.
Paragraph 1
make a question: Which theory to believe in?
idea 1
idea 2
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.
Paragraph 2
A map of Broad Street
What method did he use?
Broad Street
Many deaths happened here.
No death happened here.
The water from the pump was to blame.
Public house
Paragraphs 3+4
analyze the results: What happened to the pump water?
The water was from the river which had been polluted by the dirty water from London.
Paragraph 5
find supporting evidence : What extra evidence did he find?
two other deaths
A woman and her daughter
who lived far away but drank
the water also died.
draw a conclusion with certainty
The polluted water
carried the disease.
Paragraphs 6+7
1.Draw a conclusion:(得出结论)
2.Think of a method:(找出研究方法)
3.Collect results:(收集材料)
4.Make a question:(形成研究主题)
5.Find a problem:(发现问题)
6.Analyse results:(分析材料)
7. Find supporting evidence(找到能确证的证据)
5
4
2
3
6
7
1
Stages in examining a new scientific idea:
draw a conclusion
find a problem
make a question
think of a method
collect results
analyse the results
find supporting evidence
Para 1
Para 2
Para 3
Para 4
Para 5
Para 6
Para 7
What should we pay attention to in our daily
life in order not to get infected with all these
infectious diseases?

HeaT the food left overnight
Cook raw food thoroughly
Wash hands often
Keep away from flies
choose fresh sea food
Keep the kitchen clean
Dispose rubbish properly.
Drink boiled water
Discussion