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1、选择性必修二选择性必修二 Unit1ScienceandScientistUnit1ScienceandScientistPre-readingPredictionJohn Snow Defeats“King Cholera”1.Who was John Snow?2.What is Cholera?3.Why was it called King cholera?3.How did John Snow defeat King Cholera?While-readingActivity1:ReadformainideaPara.1Para.2Para.3Para.4 Para.5Brief i
2、ntroduction to _ and _ John Snow decided to prove _.The _ of the infection of cholera John Snow began his study by_.John Snows _ John Snow cholera the second theory marking on the map truth contributions John SnowcholeraWho?A _ doctor who even attend _ when she gave birth.What?He had a desire to _ o
3、nce and for all.famousdestroy choleraWhat?It is one of _ because it causes_.When?_.Where?_.What consequence?_.the most feared diseases in the world(once)severe diarrhoea,dehydration,and even deathIn the early 19th centuryEuropeMillions of people died from the diseaseQueen Victoria_ medical skills _
4、consequences outstanding/remarkbaledisastrous“King Cholera”=_ cholera deadlyWhile-readingActivity2:Readfordetails(Para.1)While-readingActivity3:Discuss&Locatekeyinformation(Para.2-3)Discuss the following stages of scientific reasearch in groups.Discuss the following stages of scientific reasearch in
5、 groups.What orderWhat order would you put them in?would you put them in?_ analyse the results _ ask a question _ draw a conclusion _ collect data_ find a problem _ find supporting evidence_ think of a methodHowScan para.2 and 3:to locate the 7 stages of scientific research in the paragraph to check
6、 the order you put them in.While-readingActivity3:Locatekeyinformation(7stages)Find a problemFind a problemAsk a questionAsk a questionThink of a methodThink of a methodCollect dataCollect dataAnalyse the resultsAnalyse the resultsFind supporting evidenceFind supporting evidenceDraw a conclusionDraw
7、 a conclusion2.What can you see from the map?While-readingActivity4:Readthecholeramap1.In the fight against cholera,what played a key role?A.John Snows expertise B.His map C.Broad Street“”means _“PH”means _“30,31,”mean _Which house numbers had more than four deaths in Broad Street?Where is the pump?
8、Which house numbers near the pump had no deaths in Broad Street and Cambridge Street?deathspublic househouse numberAninsightintoJohnSnowsscientificspiritinpurpsuitoftruthHow did Joh Snow find the truth?How did Joh Snow find the truth?airfood or watermarked on a mapdiedwater pumphadntdrinking water f
9、rom the pumpcholera germshandle_ scientific approach（方法）（方法）seriousSnow questioned the two contradictory theories by making an immediate _(investigate)marking on an _(epidemiology)map analysing the l_ between deaths and drinking water announcing the result with p_ evidenceinvestigationepidemiologica
10、llinkpersuasive1.How did John Snow further confirm that cholera was spread by germs?2.Whats the truth?3.How were people infected with the virus of cholera?Moreover,Snow was later able to show a link between other cases of cholera and the different water companies in London.The truth was that the wat
11、er from the Broad Street pump had been infected by waste.Some companies sold water from the River Thames that was polluted by raw waste.The people who drank this water were much more likely to get cholera than those who drank pure or boiled water.While-readingActivity5:Readfordetails(Para.4)While-re
12、adingActivity6:Readfordetails(Para.5)The result:Through John Snows tireless _,water companies began to sell _ and the threat of cholera around the world saw a substantial _._,cholera is still a problem.Each year,_ of people around the world get cholera and may _ it.Snows contribution:Fortunately,we
13、now know how to cholera，_ the work of John Snow.,in his use of maps and statistics,Snow _ the way scientists study diseases.effortsclean waterdecreaseHowevermillionsdie frompreventthanks toMoreovertransformedPost-reading1:ThinkdeeplyWhy was it John Snow,not other doctors,who defeated King Cholera?(a
14、nswer with evidence from the text)E.g.Snow was_(valubale qualities?)E.g.Snow was_(valubale qualities?)because.because.brave/courageouscaring,socially responsibleexpert/professionalquestioning mind/critical thinkingdeterminedrigorous（严谨的）creative/innovativedevoted/persistentPost-reading1:ThinkdeeplyW
15、hy was it John Snow,not other doctors,who defeated King Cholera?courageouscaringdevoted persistentinnovativedeterminedcurious to explorecritical thinking/questioning mindrigorous scientific spirit statistical abilitydetail-orientedthe father of epidemiologyIt is no wonder that Snow is considered _ N
16、owadays,howhasJohnSnowsworkinspiredusandaffectedourworld?scientific spirit scientific approachscientific successcholeraPost-reading2:Whatshouldwedotopreventcholera?drink clean and boiled waterkeep your hands cleankeep the food away from flieswash,peel and cook foodMakeaspeechA memorial ceremony（纪念仪式
17、）（纪念仪式）for John Snow is to be held this Sunday,which celebrates the 209th birthday of the great scientist.You are the representative who is going to introduce him at the ceremony.1.Who was John Snow?2.What is Cholera?3.Why was it called King cholera?4.How did John Snow defeat King Cholera?5.What qua
18、lities of John Snow do you admire?6.To inform people present of the ways to prevent cheloraHomework1.Decide on one scientist that you admire most2.Find out one of his most important achievements3.According to seven steps of scientific research,work in groups to make a presentation about how the scientist carried out his or her research.Thankyou!Thankyou!