Book5Unit1Greatscientists-warmingupandreading（人教版）.ppt

1、Great scientistsWarming up&Reading（希腊）汤玛斯纽科门 紐科門蒸氣引擎英国工程师和发明家奥地利现代遗传学之父(father of modern genetics)法国著名科学家、物理学家、化学家（英国）斯蒂芬威廉霍金（英国）Pre-ReadingPre-Reading6.Find supporting evidence a serious infection of the bowels caused by drinking infected water or eating infected food,causing diarrhoea,vomiting and

2、 often death.ReadingReadingDo you know what was this map used for in 1854?Finding out the cause of Cholera.Broad Street16373840202189 Who defeats“King Cholera“?What happened in 1854?How many people died in 10 days?Why is there no death at No.20 and 21 Broad Street as well as at No.8 and 9 Cambridge

3、Street?Task 1:Skim and Scan1.Who defeats“King Cholera“?2.What happened in 1854?3.How many people died in 10 days?John SnowCholera outbreak hit London.500L15-16L184.Why is there no death at No.20 and 21 Broad Street as well as at No.8 and 9 Cambridge Street?These families had not drunk the water from

4、 the Broad Street pump.L24-25A map of Broad StreetWhat method did he use?Broad StreetPublic houseDraw a conclusionFind a problemMake up a questionThink of a methodCollect resultsAnalyse the resultsPara 1Para 2Para 3Para 4Para 5Para 6Match themFind supporting evidencePara 7Task 2Read and answer3 John

5、 Snow finally proved the theory that he believed by _.A.gathering information with the help of a map B.looking into the source of the water for Broad Street and Cambridge Street C.separating those who suffered cholera from those who didnt D.both A and B4.To prevent the cholera from spreading again,w

6、hat did John Snow do?Suggested that the source of all water supplies be examine.Suggested that new methods of dealing with polluted water be found.Instructed the water companies not to expose people to the polluted water any more.Task3 Mind Map of the textJohn Snow Defeats“King Cholera”Paragraph 1:I

7、ntroduction of John Snow and Cholera Paragraph 2:Two theories Find a Problem:What cause the cholera?Make a question:Which is right?Paragraph 3-5:Study of the breakout in 1854 Paragraph 3:Study of the breakout in 1854 Think of a method:Test theory twoParagraph 4:Study of the breakout in 1854 Paragrap

8、h 5:Study of the breakout in 1854 Analyse the result:Find the resource of the water Collect the result:Mark the deathAnalyse the result:Reason for death and no deathParagraph 6:Repeat if necessary:Find more evidence.Draw a conclusion:Cholera was spread by germ Polluted water carried choleraParagraph

9、 7:Prevention of Cholera John Snow defeated King CholeraRead the passage again and finish Ex.1(Page 3).The problemThe causeIdea 1:Idea 2:The methodScientific Report by John SnowNobody knew the cause of the serious disease of choleraa strange cloud of gas found its victimspeople absorbed the disease

10、with mealsCollect information from the cholera outbreak to prove which theory was correctThe 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 s

11、upply and dealing with the polluted water 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 1854 when a cholera _ out,he began to gather information.He _ on a map where all the dead people had

12、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.doctor19thcausedefeatbrokemarkedpumpsourceexamineddealingHomework1.Finish P4,Ex 1,22.Retell the story John Snow Defeats King Cholera by following the 7 steps on p1