5/5Unit1Reading公開課教學(xué)設(shè)計（一）TheFirstPeriodWarmingupandReadingTeachinggoals教學(xué)目標(biāo)1.Abilitygoals能力目標(biāo)Enablethestudentstotalkaboutscienceandscientists.2.Learningabilitygoals學(xué)能目標(biāo)Enablethestudentstolearnaboutsomefamousscientistsandtheircontributionsandhowtoorganizeascientificresearch.Teachingimportant&difficultpoints教學(xué)重難點Talkaboutscienceandscientists.Teachingprocedures&ways教學(xué)過程與方式StepⅠLead-inAskthestudentstothinkofsomegreatinventionsandinventorsinhistory.StepIIPre-readingGetthestudentstodiscussthequestionsonpage1withtheirpartners.Thenaskthestudentstoreporttheirwork.Encouragethestudentstoexpresstheirdifferentopinions.T:Now,class,pleaselookattheslide.Discussthesequestionswithyourpartners.ThenI’llasksomestudentstoreporttheirwork.Showthefollowingonthescreen.Whatdoyouknowaboutinfectiousdiseases?Whatdoyouknowaboutcholera?Doyouknowhowtoproveanewideainscientificresearch?Whatorderwouldyouputthesevenin?Justguess.Sampleanswer1:S1:Letmetry.Infectiousdiseasescanbespreadeasily.Theyhaveanunknowncauseandmaydogreatharmtopeople.S2:Peoplecouldbeexposedtoinfectiousdiseases,somayanimals,suchasbirdflu.S3:AIDS,SARSareinfectiousdiseases.S4:Infectiousdiseasesaredifficulttocure.Sampleanswer2:S1:CholeraiscausedbyabacteriumcalledVariancholera.S2:Itinfectspeople’sintestines,causingdiarrhea,vomitingandlegcramps.S3:Themostcommoncauseofcholeraispeopleeatfoodordrinkwaterthathasbeencontaminatedbythebacteria.S4:Choleracanbemildorevenwithoutsymptoms,butaseverecasecanleadtodeathwithoutimmediatetreatment.Sampleanswer3:S1:Iknowsth.aboutit.Firstweshouldfindtheproblem.Then,thinkofasolution.S2:Weshouldcollectasmuchinformationaspossible.S3:Analyzingresultsisthemostimportantstage.S4:Beforewemakeaconclusion,itisnecessaryforustorepeatsomestagesorprocesses.Sampleanswer4:S1:Ithink“Findaproblem”shouldbethefirststage.S2:“Makeupaquestion”shouldfollowthefirststage.S3:“Thinkofamethod”,“Collectresults”and“Analyzeresults”areafterthat.S4:Ofcourse,before“Makeaconclusion”,weshould“Repeatifnecessary”.T:Welldone!Whenwewanttosolvesomeproblems,firstweshouldfindouttheproblem,dosomeresearchonit,proveyourfindings,andthenmakeaconclusion.Thisisascientificandobjectivewayofresearching.Nowlet’sseehowdoctorJohnSnowdidhisresearch.StepⅢReadingLetthestudentsskimthewholepassageandtrytoworkoutthemeaningsofthenewwordsandstructuresusingcontext.T:TheeffectofcholerainthenineteenthcenturyLondonwasdevastating.Manypeoplediedwithoutknowingthereason.ItwasdoctorJohnSnowwhosavedthepeople.Pleaselookatthescreen.Let’sreadthewholepassageandfindanswerstothequestions.Showthequestionsonthescreen.1.Whatconditionsallowedcholeradevelop?2.Whydoyouthinkpeoplebelievedthatcholeramultipliedintheairwithoutreason?3.WhatevidencedidJohnSnowgathertoconvincepeoplethatidea2wasright?Sampleanswers:S1:Thedirtywatermadethecholeradevelopquickly.S2:Becausepeoplecouldnotunderstanditscauseandcouldnotgetitcured.Sopeopleimaginedthatsomepoisonousgasintheaircausedthedeaths.S3:Hefoundthatmanyofthedeathswerenearthewaterpumpwhilesomeareasfarawayfromthewaterpumphadnodeaths.Sowhenpeoplewereaskednottousethewaterpump,thediseasebegantoslowdown.Inthisway,JohnSnowhadshownthatcholerawasspreadbygermsandnotinacloudofgas.StepVITextanalyzing(PPT)(小組展示)Readthepassageanddividethewholepassageintoseveralpartsandfindoutthemainidea.Part1.TheharmofCholera:Manythousandsofterrifiedpeoplediedeverytimetherewasanoutbreak.Theproblem:Neitheritscausenoritscurewasunderstood.Part2.Thelikelyreasons:Choleraspreadintheair.Peopleabsorbedthisdiseaseintotheirbodywiththeirmeals.Part3.Thewayofresearching:Byenquiringandgatheringinformationonamap.Part4.Whathefound:manydeathswerenearthewaterpump.Somehouseshadhadnodeaths.Hispreliminary(初步的)conclusion:waterwastoblame.Part5.Whattodo?whattofind?lookedintothesourceoftheirdrinkingwater→founditcamefromtheriverpollutedbythedirtywaterfromLondon.toldpeopletoremovethehandlefromthepump→foundthediseaseslowdownPart6.Whatisthesupportingevidence?TwootherpeopleinanotherpartofLondondiedafterdrinkingthewater.Hisfinalconclusion:announcedwithcertaintythatpollutedwatercarriedthevirus.Part7.WhatdidJohndoafterhisdiscovery?suggestedthatthewatersuppliesbeexaminedThewatercompanieswereinstructednottoexposepeopletopollutedwater.【知識拓展】Fillintheblanksandretellthetext:(PPT)JohnSnowwasawell-knowndoctor/physicianinLondoninthe19thcentury.Hewantedtofindthecauseofcholerainordertodefeatit.In1854whenacholerabrokeout,hebegantogatherinformation.Hemarkedonamapwhereallthedeadpeoplehadlivedandhefoundthattheyhaddrunkthewaterfromthe_pumpnearby.Thenhe___lookedinto__thesourceofthewaterandfounditcamefromtheriverpollutedbythedirtywaterfromLondon.Later,healsofoundtwootherdeathsinanotherpartofLondonwere_linkedtothewater.Soheannouncedcertainlythatpollutedwatercarriedthevirus.Besides,hesuggestedthatthesourceofallwatersuppliesbeexaminedAndthewatercompanieswere_instructedtoprovidepeople