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1Unit1GreatScientistsWarmingUp,Pre-readingandReading1．TeachingAims①GetSstoimprovetheirreadingabilities.②LetSsknowthetopic“Greatscientists”③Knowsomeimportantphrasesoccurringinthisreading2．TeachingProceduresStep1LeadinCheckSs’knowledgeaboutsomescientistsandtheirdiscoveries.①Whodiscoveredthatobjectsinwaterareliftedupbyaforcethathelpsthemfloat?Archimedes②Whowroteabookexplaininghowanimalsandplantsdevelopedastheenvironmentchanged?CharlesDarwin③Whoinventedthefirststeamengine?ThomasNewcomen④Whousedpeastoshowhowphysicalcharacteristicsarepassedformparentstotheirchildren?GregorMendel⑤Whodiscoveredradium?MariesCurie⑥Whoinventedthewayofgivingelectricitytoeverybodyinlargecities?ThomasEdison⑦Whowasthepainterthatstudieddeadbodiestoimprovehispaintingofpeople?LeonardodaVinci⑧Whoinventedalamptokeepminersafeunderground?SirHumphreyDavy⑨Whoinventedtheearliestinstrumenttotellpeoplewhereearthquakeshappened?2ZhangHeng⑩Whoputforwardatheoryaboutblackholes?StephenHawkingAfterallthequestions,thenleadinthepassagewithapicture.Askssiftheyknowthemapandwhatitisusedfor.Givethemtheanswerlater“ItisamaptofindoutthecauseofCholera.”Step2SkimandScanMorequestionsaregiventogetthegeneralideasofthispassageandsomeobviousfacts.Whodefeats“KingCholera“?JohnSnowWhathappenedin1854?CholeraoutbreakhitLondon.Howmanypeoplediedin10days?500WhyistherenodeathatNo.20and21BroadStreetaswellasatNo.8and9CambridgeStreet?ThesefamilieshadnotdrunkthewaterfromtheBroadStreetpump.Step3Readingfordetails1Whycouldn’tthecholerabeundercontrolatfirst?Neitheritscause,notitscurewasunderstood.2WhichtheorydidJohnSnowbelievein?Peopleabsorbedcholeraintotheirbodieswiththeirmeals.3JohnSnowfinallyprovedthetheoryhebelievedby________.gatheringinformationwiththehelpofamaplookingintothesourceofthewaterforBroadStreetandCambridgeStreetSeparatingthosewhosufferedcholerafromthosewhodidn’tBothAandB(rightchoice)4Topreventthecholerafromspreadingagain,whatdidJohnSnowdo?Suggestedthatthesourceofallwatersuppliesbeexamine.Suggestedthatnewmethodsofdealingwithpollutedwaterbefound.Instructedthewatercompaniesnottoexposepeopletothepollutedwateranymore.3Step4MindmapofthepassageParagraph1:IntroductionofJohnSnowandCholeraParagraph2:TwotheoryParagraph3-5:Studyofthebreakoutin1854Paragraph3:Thinkofamethod:TesttwotheoryCollecttheresult:MarkthedeathAnalyzetheresult:ReasonfordeathandnodeathParagraph4:Analyzetheresult:FindtheresourceofthewaterParagraph5:Repeatifnecessary:Findmoreevidence.Drawaconclusion:CholerawasspreadbygermPollutedwatercarriedcholeraParagraph6:PreventionofCholeraStep5RetellthepassageProvidesswithasummarywithsomeblanks.Letthemretellthepassageaswellaspayattentiontosomeimportantwords.Readthepassageagainandfillintheblanks:JohnSnowwasawell-known____inLondoninthe___century.Hewantedtofindthe______ofcholerainorderto______it.In1854whenacholera____out,hebegantogatherinformation.He_____onamapwhereallthedeadpeoplehadlivedandhefoundthatmanypeoplewhohaddrunkthedirtywaterfromthe______died.Sohedecidedthatthepollutedwatercarriedcholera.Hesuggestedthatthe_____ofallwatersupplybe_______andnewmethodsof________withpollutedwaterbefound.Finally,“KingCholera”wasdefeated.Step6HomeworkReadthewholepassageandretell.GotothenettogetmoreinformationaboutUK.