Unit 1 Great ScientistsReadingAlexander 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 & Contributions: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 quickly 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 problem. expertattendedphysicianexposedcurechallengeCareful Reading:1.What were the two theories about the cause of cholera? 2.First,3.Second,the disease caught people through _the disease caught people through food airCareful Reading:Research on an outbreak in London in 1854Themethod First: Next:In addition:The result:Solution:markedlooked intofound evidencethe polluted water was to blamePeople not be exposed to the polluted waterdraw 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:DicussingScientific Report by John SnowThe problemThe causeIdea 1:Idea 2:The methodNobody knew the cause of the serious disease of choleraa strange cloud of gas found its victimspeople absorbed the disease with mealsMark information on a map to find out where people died or did not diedThe resultsIdea 1 or 2? Why?The conclusionHe found the cause of cholera was the polluted waterIdea 2. Because the information showed that the dirty water carried choleraHe defeated cholera by examining the water supply and dealing with the polluted water 1.Read the text and learn the new words by heart2.Find more information about cholera and John Snow on the Internet.Homework: