【課件】Unit+1Reading+and+Thinking+課件人教版（2019）選擇性必修第二冊(cè)

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”skimmingSkimthepassage,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.AfterreadingThink：Whatqualitiesandscientificspiritsdotheyhaveincommon?Whichscientificspiritsshou