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1、Unit 1 Great ScientistsReadingScientists:Alexander Bell electricity Thomas Edison the First telephoneWright Brothers the electric LampMadame Curie black holes in UniverseFranklin Theory of GravitySteven Hawking the First PlaneElbert Einstein RadiumIsaac Newton the Theory of RelativityScientists & Co
2、ntributions:Archimedes(阿基米德阿基米德)Warming up:1. Which scientist discovered that objects in water are lifted up by a force that helps them float?Ancient Greek (287-212BC)A mathematicianCharles Darwin2. Who wrote a book explaining how animals and plants developed as the environment changed?the Origin of
3、 SpeciesWarming up:“father of modern biology”Marie CurieWarming up:3. Who discovered radium?4. Who invented the way of giving electricity to everybody I large cities?Thomas EdisonPre-reading:infectious diseases :They can be spread to other people. They have an unknown cause. They are difficult to cu
4、re. They need public health care to solve them.Pre-reading:Skimming:Who was the great scientist in the passage and what was the deadly disease of its day?John Snow choleraCholera: It begins in the stomach and a severe case can lead to death without immediate treatment. And the victims died very quic
5、kly from a loss of liquid after severe vomiting(呕吐呕吐) and diarrhoea(腹泻腹泻).Careful Reading:John Snow was an doctor in London who Queen Victoria as her personal . He thought about helping ordinary people to cholera. Though the cause and the of it were unknown, he wanted to face the and solve the probl
6、em. expertattendedphysicianexposedcurechallengeCareful Reading:1.What were the two theories about the cause of cholera? 2.Which did John Snow want to prove?3.What was his method of doing the research?multiplied victimsabsorb The second one.To gather information in two particular streets.Careful Read
7、ing:1.What did he do with the results of his enquiry?2.What valuable clue did he get about the cause of the disease?3.What might be the cause?Marked on a mapMany of the deathshad no deaths.It seemed that the water was to blame for cholera.Many of the deaths were near the water pump in Broad Street.d
8、eathPart of Snows Cholera MapCareful Reading:1.Why did he tell people to remove the handle from the pump?2.What happened after the handle was removed?So that slowed downCareful Reading:1.Where did the woman live and what did she had delivered to her house every day?2.What did their deaths suggest?3.
9、What measures did John Snow take to prevent the disease from spreading?Away from Broad StreetWater from the pumpThe polluted water carried the virus.suggested thatbe examinedwere instructed not to exposetoFind the main idea of each paragraph:1.The causes of cholera2.The correct or possible theory3.C
10、ollect data on those where people were ill and died and where they got their water4.Plot information on a map to find out where people died or did not die5.Analyse the water to see if that is the cause of the illness.6.Find other evidences to confirm his conclusion7.The polluted dirty source of drin
11、king water was to blame for the cause of the London cholera.Careful Reading:draw a conclusion Think of a method Collect results Make a questionFind a problem Analyse the results Find supporting evidenceStages in setting out a new scientific idea:DicussingFind more information about cholera and John Snow on the Internet.Homework:
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