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1、Unit 1 Great scientists,-By Joyce,Alexander Bell electricity Thomas Edison the First telephone Wright Brothers the electric Lamp Madame Curie black holes in Universe Franklin Theory of Gravity Steven Hawking the First Plane Elbert Einstein Radium Isaac Newton the Theory of Relativity,Scientists & Co
2、ntributions:,John Snow is a well-known doctor in the 19th century in London and he defeated “King Cholera”.,Do you know what kind of disease is cholera?,It is a kind of terrible disease caused by drinking dirty water and it caused a lot of deaths in the old times and it was very difficult to defeat.
3、,Cholera: It begins in the stomach and a severe case can lead to death without immediate treatment. And the victims died very quickly from a loss of liquid after severe vomiting(呕吐) and diarrhoea(腹泻).,? The causes of cholera ? The correct or possible theory ? Collect data on those where people were
4、ill and died ? Plot information on a map to find out where people died or did not die ? Analyse the water to see if that is the cause of the illness. ? Find other evidences to confirm his conclusion ? The advice of John Snow about how to solve the problem,John Snow Defeats “King Cholera”,What causes
5、 cholera?,Which theory is correct?,Collect information on those who were ill or died and where they got their water,Mark information on a map to find out where people died or did not died,Analyse the water to see if that is the cause of the illness,Find other evidence to make sure the conclusion,The
6、 water is to blame. The source of all drinking water should be examined.,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 pr
7、oblem.,para.1,expert,attended,physician,exposed,cure,challenge,Careful Reading:,What were the two theories about the cause of cholera? Which did John Snow want to prove? What was his method of doing the research?,multiplied victims absorb,The second one.,To gather information in two particular stree
8、ts.,para.2&3,Careful Reading:,para.4,What did he do with the results of his enquiry? What valuable clue did he get about the cause of the disease? What might be the cause?,Marked on a map,Many of the deaths had no deaths.,It seemed that the water was to blame for cholera.,Many of the deaths were nea
9、r the water pump in Broad Street.,Part of Snows Cholera Map,Careful Reading:,para.5,Why did he tell people to remove the handle from the pump? What happened after the handle was removed?,So that ,slowed down,Careful Reading:,para.6&7,Where did the woman live and what did she had delivered to her hou
10、se every day? What did their deaths suggest? What measures did John Snow take to prevent the disease from spreading?,Away from Broad Street Water from the pump,The polluted water carried the virus,suggested thatbe examined were instructed not to exposeto,draw a conclusion Think of a method Collect r
11、esults Make a question Find a problem Analyse the results Find supporting evidence,Stages in setting out a new scientific idea:,Dicussing,John Snow Defeats “King Cholera”,The passage is written as a report of an experiment and there are 7 steps:,1.Find a problem:(发现问题) 2.Make up a question:(形成研究主题)
12、3.Think of a method:(找出研究方法) 4.Collect results:(收集材料) 5.Analyse results:(分析材料) 6.Repeat if necessary:(必要时重新分析) 7.Draw a conclusion:(得出结论),Read the passage again and fill in the blanks: John Snow was a well-known _ in London in the _ century. He wanted to find the _ of cholera in order to _ it. In 18
13、54 when a cholera _ out, he began to gather 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 _ and new methods of _ with polluted water be found. Finally, “King Cholera” was defeated.,doctor,19th,cause,defeat,broke,marked,pump,source,examined,dealing,Bye Bye,
