Unit 1 Science and Scientists Reading and thinking 课件高中英语（2019）选择性必修第二册

LearningObjectivesFindoutthestagesofscientificresearchinthispassage.LearnaboutJohnSnow’sresearchprocessExpressyourideaonthegiventopicthroughcreativethinking大单元主题教学Lead-inThestagesofscientificresearchfindaproblemaskaquestionthinkofamethodcollectdataanalyzetheresultsfindthesupportingevidencedrawaconclusionWhatcontributestoTuYouyou’sdiscovery?teamupwithotherexcellentscientistsgetinspirationfromTCM;gainsupportfromthecountryprofessionalknowledgepersonalcharacteristics(committed;patient...)Lead-inWhatkindsofepidemics（流行病）haveyouheardof?bird-flu（禽流感）malaria（疟疾）plague（鼠疫）Ebola(埃博拉)Lead-inVideoTime:Howmuchdoyouknowaboutcholera?Whatarethesymptoms(症状)

ofCholera？Itbeginsinthestomachandaseverecasecanleadtodeathwithoutimmediatetreatment.dehydration(缺水)severevomiting(呕吐)diarrhea(腹泻)Manyyearsago,thecholeraintheworldkilledmillionsofpeople.Peoplewereveryafraidofit,buttheydidn'tknowwhattodo.Luckily,Idecidedtofindouthowtopreventandtreatthedisease.Finally,Iwonthebattle.Howdidhewinthebattle?Stagesinscientificresearch

DrawaconclusionCollectdataAskaquestion

Findaproblem

Analysetheresults

Findsupportingevidence

ThinkofamethodPredictionWhatwillbetalkedaboutfromthetitle?JohnSnow

Defeats“KingCholera”Who?How?What?WhyCholerawascalled“King”atthattime?Becauseitclaimed/tookalotoflives.Readthewholetextquicklyandmatchthemainideas.Readthewholetextquicklyandmatchthemainideas.Para.1Para.2Para.4Para.5JohnSnowdesiredtodestroycholera.JohnSnowdecidedtoprovethesecondtheory.Snowbeganhisstudybymarkingonthemap.Truthoftheinfectionofcholera.Snow'scontributions.Para.3Readfordetails(Para.1)It'soneof______________________intheworld,becauseitcauses_______________________________._____________________(when),anoutbreakofcholerahit________milionsofpeople____________________.themostfeareddiseasesseverediarrhoeaanddehydrationIntheearly19thcenturyEuropediedfromthediseaseResearch

backgroundHerosetobecome_______________,andeven__________QueenVictoria

whenshegavebirth.JohnSnowbecame___________becausenooneknew____________________________.However,hehadadesireto______________onceandforall.frustratedhowtopreventortreatcholeraafamousdoctorattendedtodestroycholeraReadfordetails(Para.1)Research

backgroundReadfordetails(Para.2)WhatwerethetwotheoriesandwhichdidJohnSnowagreewith?TwocontradictorytheoriesTheoryone:causedby________Theorytwo:causedby_______SymptomsSymptomscoughsneezerunnynoselungdiarrhoeadehydration✔badairgermsSnowsubscribedtothesecondtheory.Readfordetails(Para.2)FindaproblemWedon’tregardanyscientifictheoryastheabsolutetruth.------KennethRMillerWhatdidJohnSnowinvestigatewhenanotheroutbreakhitLondonin1854?Hediscoveredthatintwoparticularstreetsthecholeraoutbreakwassoseverethatmorethan500peoplediedintendays.Hewasdeterminedtofindoutwhy.Readfordetails(Para.2)AskaquestionAmapofBroadStreet-”CholeraMap”WhatmethoddidSnowuse?AmapofBroadStreet-”CholeraMap”Whichhouseshadmorethan4deathsinBroadStreet?WhichhouseshadnodeathinBroadStreet?Multipledeathshappenedhere.Nodeathhappenedhere.Hesuspectedthatthewaterfromthepumpwastoblame.

Readfordetails(Para.3)ThinkofamethodCollectdataAnaysetheresultsPumpwatercarriedthecholeragerms.TwodeathsPlacePersonEventInanotherpartofLondonAwomanandherdaughterDiedofcholerabecauseofdrinkingthewaterdeliveredfromthepumpRemove

thehandleofthepumpThediseasewasstopped.Readfordetails(Para.3)Wascholeradefeatedcompletely?Readfordetails(Para.4---5)Howtopreventthecholera?见视频文件Topreventcholerafromspreading,we'dbetter

drinkpureorboiledwaterandeatcleanfood.A:Itwasbelievedthatcholerawascausedbybad____orgermsin_______________.B:Snow___________________theplaces

wherethepeoplewho_____hadlivedC:Manydeathsoccurrednearthe___________inBroadStreet.Somepeople__________drunkthewaterfromthepump,andlived.AwomanandherdaughterdiedinanotherpartofLondonafter________________________.D:Thepumpwatercarried____________.conclusionevidenceE:The_______ofthepumpwasremoved.processsolutionhandletheoriesairfoodorwatermarkedonthediedwaterpumphadn’tdrinkingwatercholeragermsReadthepassage

againandcompletethechartbelow.(教材P3习题)conclusionevidenceprocesssolutiontheoriesmapfromthepumpAsadoctor,hehelpedusto____________________.Asascientist,hefoundout_________________________.whatcausedcholerapreventcholeraWhatqualitiesdoyouthinkJohnSnowhas?GroupdiscussionGroupdiscussionWhatqualitiesdoyouthinktheyhaveincommon?creativitycommittedpassionatecriticalthinkingThestoryofcholera

Intheearly19thcentury,anoutbreakofcholerahitEurope,_______(cause)millionsofdeaths.Seeingthis,JohnSnowbecamefrustratedbecausenooneknewhow_________(prevent)ortreatcholera.Atthattime,doctorshadtwotheoriestoexplainhowcholeraspread.Onewasthatbadaircausedthediseaseandanotherwasthatcholerawascausedbygermsinfoodorwater.Johndiscoveredthatintwoparticularstreet_____choleraoutbreakwas____severethatover500peoplediedintendays.Throughhisserious____________(investigate),hefounditwasthepumpwaterinBroadStreet_______resultedinthedisease.Theref