(共29张PPT)
Unit 1 Great scientists
Science changes our world,so do scientists.
I put forward the theory about black holes.
I’m the father of super hybrid rice
Who are they
Guessing game
Who is he
He is called the greatest scientist in the 20th
century.
He is famous for the Theory of Relativity(相对论).
He is …
Albert Einstein
Imagination is more important than knowledge
imaginative
Who is he
He invented electric bulbs(电灯).
He made more than 1,000 inventions during
his life.
He is …
Thomas Alva Edison
Thomas Alva Edison
Genius is one percent inspiration and ninety-nine percent perspiration.
天才就是百分之九十九的汗水加上百分之一的灵感.
Who is she
She is a woman scientist.
She discovered radium(镭)and polonium(钋).
In her life, she won the Nobel Prize twice.
She is …
Marie Curie
Nothing in life is to be feared. It is only to be understood.
生活中没有什么可怕的东西,只有需要理解的东西.
Who is he
He is a Chinese scientist.
He invented the earliest instrument to
tell people where earthquakes happened.
He is …
Zhangheng
John Snow
John Snow is a well-known doctor in the 19th century in London and he defeated “King Cholera”.
Who is he
He is a famous doctor in London.
He defeated “King Cholera”
He is …
Who is he He put forward a theory about black holes
Stephen Hawking 斯帝芬 霍金Stephen Hawking, British, a physicist.
Stephen Hawking (1942--) British, a physicist
Black hole
bacteria of cholera
What is cholera
霍乱( cholera)是一种烈性肠道传染病，两种甲类传染病之一，由霍乱弧菌(Vibrio cholerae)污染水和食物而引起传播。临床上以起病急骤、剧烈泻吐、排泄大量米泔水样肠内容物、脱水、肌痉挛少尿和无尿为特征。严重者可因休克、尿毒症或酸中毒而死亡。在医疗水平低下和治疗措施不力的情况下，病死率甚高。
When you eat some seafood , unclean food or drink polluted water. ……
You feel……
(for example)
Maybe you have got ________.
Cholera
Let’s get to know how Dr. John Snow defeated “King Cholera” in 1854 in London in this reading passage:
John Snow Defeats “King Cholera”
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 defeated “King Cholera”
Skimming
para.1 Two possible theories
para.2 Look for evidence
para.3 Deadly disease: cholera outbreak in
London
para.4 The polluted dirty source of
drinking water was to blame
para.5 Analyse the water
para.6 Mark information on a map to find
out where people died or did not die
para.7 Find other supporting evidences
why
Neither its cause, nor its cure was understood. The cholera was the most deadly disease of its day.
What caused cholera(two theories)
Details
Para1-2
Which theory did John believe in
Cholera multiplied in the air. A cloud of dangerous gas floated around until it found its victims.
People absorbed this disease into
their bodies with their meals.
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.
Para3-4
New Words Study
water pump & handle
There were some water pumps in different districts in England in the 1850s. People could use them to pump the water for daily life, but if someone removed the handle from the water pump, it could not be used.
analyze the results: What happened to the pump water
The water was from the river polluted by the dirty water from London.
Para5-6
find supporting evidence : What extra evidence did he find
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 virus.
What did John Snow suggest
He suggested that the source of all the water supplies be examined.
Para7
Draw a conclusion（得出结论）
Think of a method（找出研究方法）
Collect results（收集材料）
Make a question (形成研究主题）
Find a problem（发现问题）
Analyse results（分析材料）
Find supporting evidence（找出辅助证明）
If you were a scientist,you might do
the following things.
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
Match them
para 7
John Snow was a well-known ____ in London in the ___ century. He wanted to find the ______ of cholera in order to ______ it. In 1854 when a cholera ____ out, he began to ______ information. He _____ on a map where all the dead people had lived and he 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 water supply be _______.
Finally, “King Cholera” was defeated.
doctor
19th
cause
defeat
broke
marked
pump
source
examined
gather
