【公开课】Unit+1Reading+and+Thinking人教版选择性必修第二册

Look&discussWheredoyouthinkthisphotowastaken?ScienceandScientistsUnit1Ithinkitwastakeninachemistrylaboratoryatschool.Itlooksliketheyareconductinganexperiment.Whatarethestudentsdoinginthephoto?Unit1ReadingandThinkingUnderstandthequestioningmindWhatdiseasecanyouthinkofwhenyoulookatthesepictures?COVID-19outbreakwhatwhyasevereinfectiousdiseaseleadtohighfeveranddrycoughnumerouspeoplediefromithuman-to-humantransimisionhow？Thus,manydoctors,includingdoctorZhongsuspectedthediseasewascausedbyhuman-tohumantransimission,sohewenttoWuHantoinvestigateandfindmoreproofs.Atfirst,peoplethoughtthebatwastoblameforthedisease.However,thosewhowenttoWuHanorgotclosetopeoplefromWuhanweremorelikelytobeinfected.Also,Wuhanhadmoremultiple

severecases.Howtofindtheproofofadisease?BydoingscientificresearchstagesofscientificresearchanalyzetheresultsaskaquestiondrawaconclusioncollectdatafindaproblemfindsupportingevidencethinkofamethodOrder?Pairwork1274563Intheearly19thcentury,aninfectiousdiseasesimilartoCOVID-19hitEurope.Now,let'sreadapassagetolearnaboutit.PredictionLookatthetitleandpictures,whatquestionwillyouraise?JohnSnow

Defeats

“KingCholera”Who?How?What?Thetextismainlyabout____________and_______hedefeatedkingcholera.howJohnSnow?Wecanpredictthat…JohnSnow

Defeats

“KingCholera”scientificresearchWhileReading

-Fastreading1.ReadthewholetextquicklyandmatchthemainideasPara1Para2Para4Para5JohnSnowdesired

todestroycholera.JohnSnowdecided

toprovethesecondtheory.SnowbeganhisstudybymarkingonthemapTruthoftheinfectionofcholeraSnow'scontributionsPara3skimmingSkimthepassage,findoutthemainideaandchoosethecorrectkeywordstosummarizeeachparagraph.ParagraphsMainidea12-345What?Who?How?ThetruthResultsandsignificanceWhat’sthemainideaofthepassage?JohnSnowwasawell-knowndoctorinLondon.ThecauseofCholerawaspollutedwater.Thesourceofalldrinkingwatershouldbeexamined.HowdidJohnSnowcollect,analyzetheinformation,findthecauseofthediseaseandsolveit.CarefulreadingReadthepara1andanswerthefollowingquestions.Whatischolera?Whatareitssymptoms?WhoisJohnSnow?What’shisrelationwithcholera?deadlyuncontrollable“King”

FindaproblemReadPara2-3andfindoutthefollowingscientificstages.scanning

HowfindaproblemAskaquestionThinkofamethodCollectdataAnalyzetheresultsFindsupportingevidenceDrawaconclusionFindaproblemAskaquestionThinkofamethodFindsupportingevidenceDrawaconclusionCollectdataAnalysetheresultsscanningReadpara2-3andfindouttheanswers.1.Whatarethetwotheories?2.WhichtheorydoesSnowapproveof?3.Whatdidhediscover?

askaquestionscanningThinkofamethodmethod:markonthemaptheexactplacesCollectdataAnalyzetheresultsWhatdoestheredstarsmean?multipledeathshappenedhereWhatdoesthegreenstarsmean?NodeathhappenedhereWhy?CLUE:freebeerfrompublichousesuspect?thewaterfromthepumpwastoblameButheneededsupportingevidence!Readpara.3andfindoutthesupportingevidence.What’sJohn’sconclusion?scanningthepumpwatercarriedcholeragerms.measure?hehasthehandleofthepumpremoved.thediseasewasstoppedinitstracks.Whydidthepumpcarrythecholeragerms？scanningWhatelsedidJohn’sdiscover?theimpact？thefatherofmodernepidemiologyscanningReadthepassageagainandcompletethechartbelow.A:Itwasbelievedthatcholerawascausedbybad___orgermsin_______________.B:Snow_____________theplaces

wherethepeoplewho______hadlivedC:Manydeathsoccurrednearthe_____________inBroadStreet.Somepeople__________drunkthewaterfromthepump,andlived.AwomanandherdaughterdiedinanotherpartofLondonafter_______________________________.D:Thepumpwatercarried________________________.handleE:The_______ofthepumpwasremoved.airfoodorwatermarkedondiedwaterpumphadn’tdrinkingwaterfromthepumpcholeragermsconclusionevidenceprocesssolutiontheoriesMatchthefollowingheaderswiththelettersfromthechartabove.1.WhatwasthemostimportanttoolSnowusedtodefeatcholera?Whatcommonmedicaltools,e.g.amicroscope,didn'theuse?Why?PossibleAnswer:

Heusedmapsandstatisticstoanalysewherethedeathsoccurred.Hedidn’tuseamicroscope,forexample.Hedidn’ttestthewater,nordidhedrawbloodorexaminepatients.Thereasonhedidnotusemedicalequipmentsuchasamicroscopewasbecausetheydidnotexistduringhistime.Further,understandingofgermsandbacteriawasstilldeveloping,andsohehadtoinnovatemethodshimselfbasedonthetheoryhebelieved.2.HowhasJohnSnow'sworkaffectedourdailylives?PossibleAnswer:

Snow’sworkgavepeopleawarningtodrinkcleanwater,forexample,aswellasanemphasisonwashinghandsafterourhandsbecomedirty.Healsoshowedhowtopreventcholeraepidemics,andtransformedthewayscientistsstudydiseases,whichhasallowedformoreprotectionfromoncecommondiseasessuchascholera.AfterReadingDiscoverartemisnintotreatmalaria,awardedtheNobelPrizeFatherofhybridricekeeppeopleawayfromhungerDespitethedangerofinfection,devotetotheresearchofCOVID-19

Whatqualitiesandscientificspiritsdotheyhaveincommon?

strongsenseofsocialresponsibilityknowledgeablecouragetofacedifficultiesDiscussioncommittedcriticalthinkingcreativityquestioningmindcareforlifeAfterreadingThink：Whatqualitiesandscientificspiritsdotheyhaveincommon?Whichscientificspiritsshouldyoulearnfromthesegreatpeople?strongsenseofsocialresponsibilityknowledgeablecouragetofacedifficultiescommittedcriticalthinkingcreativequestioningmindcareforlifeprofessionalknowledgetheoreticalbackgroundresearchmethodsstatisticalabilityinspiringCarefulReadingPara.1Research

background2.Whywasthediseasecalled“”KingCholera?Cholerausedtobeoneofthemostfeareddiseasesintheworld,untilaBritishdoctor,JohnSnow,showedhowitcouldbeovercome.Thisillnesscausesseverediarrhoea,dehydration,andevendeath.Intheearly19thcentury,whenanoutbreakofcholerahitEurope,millionsofpeoplediedfromthedisease.Asayoungdoctor,JohnSnowbecamefrustratedbecausenooneknewhowtopreventortreatcholera.Intime,herosetobecomeafamousdoctor,andevenattendedtoQueenVictoriawhenshegavebirth.However,heneverlosthisdesiretodestroycholeraonceandforall.expert/experienced/knowledgeabledeadlyuncontrollable“King”1.WhoisJohnSnow?Ingeneral,doctorsinthosedayshadtwocontradictorytheoriestoexplainhowcholeraspread.Onetheorywasthatbadaircausedthedisease.Anotherwasthatcholerawascausedbyaninfectionfromgermsinfoodorwater.Snowsubscribedtothesecondtheory.Itwascorrect,buthestillneededproof.Consequently,whenanoutbreakofcholerahitLondonin1854,Snowbegantoinvestigate.Hediscoveredthatintwoparticularstreetsthecholeraoutbreakwassoseverethatmorethan500peoplediedintendays.Hewasdeterminedtofindoutwhy.1.Whatarethetwotheories?WhichtheorydidJohnSnowthinkwasreasonable?2.WhatdidJohnSnowinvestigatewhenanotheroutbreakhitLondonin1854?Para.2Findaproblem→AskaquestionWhatdoestheredstarsstandfor?multipledeathshappenedhere.Whatdoesthegreenstarsstandfor?Nodeathhappenedhere.Why?CLUE:freebeerfrompublichouseSuspectthatthewaterfromthepumpwastoblame.Butheneededproofs!1.WhatmethoddidSnowuse?2.Whatdidhefindonthemap?Whatdidhedotodealwithit?AmapofBroadStreetPara.3Para.3Analyzetheresults→Findsupportingevidence Snowbeganbymarkingonamaptheexactplaceswhereallthosewhodiedhadlived.ThereweremultipledeathsnearthewaterpumpinBroadStreet(especiallyhousenumbers16,37,38,and40).However,somehouseholds(suchas20and21BroadStreet,and8and9Cambridge8Street)hadhadnodeaths.Thesepeopleworkedinthepubat7CambridgeStreet.Theyhadbeengivenfreebeer,andsohadnotdrunkthewaterfromthepump.Snowsuspectedthatthewaterpumpwastoblame.Whatismore,inanotherpartofLondon,awomanandherdaughterhaddiedofcholeraaftermovingawayfromBroadStreet.Itseemedthatthewomanlikedthewaterfromthepumpsomuchthatshehaditdeliveredtoherhouseeveryday.…multipleHowevernodeathsthewaterpumpwastoblamePara.3Drawaconclusion Asaresultofthisevidence,JohnSnowwasabletoannouncethatthepumpwatercarriedcholeragerms.Accordingly,hehadthehandleofthepumpremovedsothatitcouldnotbeused.Throughthisintervention,thediseasewasstoppedinitstracks.announcePumpwatercarriedthecholeragerms.Remove

thehandleofthepumpThediseasewasstoppedWatchandlearnWhatcanhappentopeoplewhoareinfectedwithcholera?diarrhean.腹泻dehydrationn.脱水severevomiting严重呕吐Aseverecasecanleadtodeath.SummaryWhatcanpeopledotopreventcholera?drinkpureorboiledwaterandeatcleanfoodAfterReading1.Fillintheblanksaccordingtothetext.Intheearly19thcentury,anoutb