高中英語Module 5 A Lesson in a Lab 教案

Module5ALessoninaLabTheFirstPeriodReadingTeachinggoals教學(xué)目標(biāo)a.重點(diǎn)詞匯expand,contract,conclusion,method,liquid,solid,iron,mixture,oxygen,electricity,aim,equipment,react,result,steam,substance,boil,float,form,dissolve,rustb.重點(diǎn)句式Itishardtothinkofaworldwithoutmetals.Itisimportanttoknowhowtheyreactwithdifferentsubstances,forexample,waterandoxygen.Thismakessurethereisnoairinthewater.Enablethestudentstodescribeascientificexperiment.Enablethestudentstolearnsomewordsconcerningscientificexperiment.Helpthestudentslearnaboutthestepsofasimplescientificexperimentsothattheycandescribeasimilarone.Teachingimportantpoints教學(xué)重點(diǎn)Helpthestudentslearnhowtodescribeasimplescientificexperiment.TeachingdifHcultpoints教學(xué)難點(diǎn)HelpthestudentsunderstandthetwotablesofPassageAandPassageB.Teachingprocedures&ways教學(xué)過程與方式StepIWarming-upThepurposeofthispartistoletthestudentsknowandgetfamiliarwiththenewwordsinINTRODUCTION:expand,contract,mixture,substance,oxygenandelectricity.First,writedownthewordsontheblack-board,andthenteachthemthemeaningofeachwordbyquestioning.T:Hello,everyone!DoyouknowtheprogramLucky52onCCTV?Ss:Yeah!T:OK,nowsupposeI'mLiYong,andyouarecompetitors.Herearesixwordsontheblackboard.Whatyoushoulddoistoguessthemeaningsofthem.Ifyoucan'texpresstheminEnglish,youmaysayinChinese.Thequicker,thebetter.Areyouclear?Ss:Yes.T:Listen.Whatdowetakeinwhenwebreathe?Air.T:Right.Butnotexact.S2:氧氣。T:Right.InEnglish,itiscalled“oxygen”.Weneedoxygentokeepalive.Andwithoutit,therewillbenolifeonthisplanet.OK,anotherquestion.Whatdowecallitwhenweputsugar,eggs,andmilktogether,orwemixthemtogether?Wecallitmixture.T:Good.Allthethingsthataremixedtogethercanbecalledmixture.Nextone,wecanuseonewordtostandforallthethingsaroundus,whichincludesair,water,stone,wood,glass,ironandsoon.Whatisthisword?Substance.T:Right.Next,whatwillhappenwhenwaterturnsintoice?Liquidwillturnintosolid.T:Right.Besidesthis,willithavesomechangeinsize?Yes.Itwillbecomelarger.T:Yeah!Whatdowecallthischange?It'scalled"expandTeachercanusebodylanguagetoexpressthemeaningof"expand".T:Now,thelastone.What'stheoppositemeaningof“expand"?Isit^contract〃?T:Youareright.Themeaningof“contract“ismakingorbecomingsmallerorshorter.Well,Ithinkthatallofusdidverywell.Nowpleasereadthesewordsafterme.StepIIVocabularyAskthestudentstoreadthesentencesinActivity1onpage41,andthenpickoutthecorrectones.Atthesametimeaskthemtopayattentiontothenewwords.AtlastchecktheanswerstoActivity1withthewholeclass.ForActivity2,askthestudentstoworkinpairstofinishthetask.Ifpossible,askthemtogivetheirreasonsfordoingso.ForActivity3，givethestudentsmorewordstohelpthemknowthatmaterialsarearoundallofus,andweshouldusethemcorrectlyandreasonably.T:I'mverygladthatyoucanfinishthetasksoquicklyandcorrectly.Well,allofusknowthatwearelivinginamaterialworld.Withoutthesematerials,whethernaturalorman-made,we'llhavenothingtoeat,tolivein,touse,towearandsoon.Now,let'slookatthesewords:electricity,iron,metal,steel,air,andglassinActivity3.Youhavetotellwhichofthemarenatural,whichofthemareman-madeandwhichofthemcanbeboth.StepIIIReading(PassageA)Therearethreeactivitiesinthispart:Activity1:findthecorrectordertodescribethestagesofascientificexperiment;Activity2,findthebesttitleforthepassage;Activity3,answersomequestionsaboutthepassage.Task1:Activity1T:Well,ifyouwereanengineer,youwouldtakepartintheexperimentofmakingShenZhouVFlight.Whatkindofmaterialswouldyouliketouse?rdliketousesomematerialsthatarelightenoughandhardenough,sothattheflightcanbeeasilysentupintospace,anddoesnftgetintrouble.T:Howcanwefindsuchkindofmaterials?Wecandosomeexperiments.Wecan7usenaturalmaterialsonly;weneedbothman-madeandnaturalmaterials.T:That'sright.Nowwe'llreadapassageaboutascientificexperiment.Pleaseturntopage44.We'llgothroughPassageA.Whenwearedoingathing,weshoulddoitinanorderlyway.It'sespeciallytruewithascientificexperiment.Nowlet'sseethefourwordsinthetable:conclusion,aim,resultandmethod.Thefourwordsareabouttheordersorstagesofascientificexperiment.Wemustknowthesetwowords:resultandmethod.Whatarethemeaningsoftheothertwowords?“Aim〃shouldbeaboutwhattheexperimentisfor.For''conclusion〃,Ihavenoidea.T:Right."Aim”meanspurposeorobject.Forexample,hehasonlyoneaiminlife,thatis,tobeamillionaire.Andfor“conclusion",let'sseeanexamplefirst,whenyouhaveworkedonamathsproblemforalongtime,butyoustillcan'tworkitout.Soyoumaymakeaconclusionthattheproblemiswrong.Here,“theproblemiswrong“isyourconclusion.Doyouunderstand?Ss:Yeah!T:Nowwhocangiveussomeotherexamplestoshowthemeaningof"aim"?Manypeopleaimtobeamillionaire.ButIthinktoservepeopleisthehighestaim.T:Whatisthecorrectorderofstagestodoanexperiment?Itshouldbeaim,method,resultandconclusion.T:That'sright.Withoutaim,wedon'tknowwheretogo;withoutmethod,wedon'tknowhowtodothingswell;withoutresult,we'lldrawablankorgainnothing;withoutconclusion,we'llfindwhatwe'vedoneisworthnothing.Task2:Activity2AskthestudentstoscanPassageAandfindthebesttitleforthepassage.T:PleaselookatActivity2.WhatyoushoulddoistoscanPassageAanddecidewhichisthebesttitleforthepassage.Givethestudentssometimetodothejobandthenchecktheanswer.T:Well,what'sthebesttitleforthepassage?S4:TheReactionofMetals.T:Why?S4:Thewriterbeginsthepassagebyintroducingthedifferentusesofdifferentmetals.Butfortherestpartofthepassage,includingthetable,he/shemainlydescribesseveralmetals'reactionwithdifferentsubstances.T:Whatagoodreasonitis!Now,let'slookatActivity3.Task3:Activity3Askthestudentstoreadandanswerthequestionsbelowthepassage.Givethemsometimetodothejob.Afterthat,checktheanswerswiththewholeclass.StepIVReading(PassageB)Inthispart,thestudentswillreadthepassageandthenfillinthetablebelowthepassage.TherearethreeTasksinthispart.Thefirstoneistoaskthestudentstofindthestructureofthepassageandfinishthetable.ThesecondoneistodealwithActivity5.ThethirdoneistofinishActivity6.Task1:StructureofthepassageT:Now,we'llcontinuetoreadPassageB.ThetitleofitisASimpleScientificExperiment.Fromthepassagewecanseehowtheexperimentisdone.Whatisthestructureofadescriptionofexperiment?Whocancometotheblackboardtowritedownthestructure?S:Letmetry.Astudentcomestotheblackboardandwritesdownthestructure.ASimpleScientificExperiment:IntroductionfAimfApparatusfMethodfResultfConclusionT:OK.Weshouldnoticethatthereare3differentreactionswhicharerespectivelydescribedwithmethod,resultandconclusion.Now,pleasereadthepassageandthenfillinthetable.Letthestudentsdothejob,andthenchecktheanswerswiththewholeclass.T:Well,whatisordinarywateraccordingtotheexperiment?S6:1thinkordinarywaterheremeansthewaterthathasnotbeenboiled,andhasairinit.T:Right.Wealsocallordinarywater“rawwater”.Nowwhat9s“Bunsenburner"?Weoftenfinditinlabs.Now,turntopage46,andfindthepictureofBunsenburner.Task2:Activity5T:Nowpleaseturntopage46.LookatActivity5.ReadPassageBagain.Completethesentences.Afterthestudentsfinishthesentences,asksomeofthemtoreadoutthecompletesentencesandchecktheanswerswiththewholeclass.Task3:Activity6Thispartisaboutvocabularystudy.Letthestudentsreadaftertheteacher,andthenworkinpairstofindthemeaningsofthenewwords.Explanationsofsomewords:React:haveeffecton(ofonesubstanceappliedtoanother)Steam:gasfromboilingwaterOil:liquidwhichdoesnotmixwithwater,obtainedfromanimals,plantsorfoundinrockunder-groundBoil:(ofwaterorotherliquid)reachthetemperatureatwhichchangetogasoccursScientific:of,for,connectedwith,usedinscienceExperiment:testcarriedoutcarefullyinordertostudywhathappensandgainnewknowledgeFloat:beheldupinair,gasoronthesurfaceofliquid;movewithliquidorairForm:giveshapeorformto;make,produceDissolve:(ofaliquid)soakintoasolidsothatthesoliditselfbecomesliquidStepVLanguagePointsAskthestudentstotranslatethefollowingsentences,andgetfamiliarwiththesentencestructures.Showthefollowingsentencesonthescreen.Itishardtothinkofaworldwithoutmetals.Itisimportanttoknowhowtheyreactwithdifferentsubstances,forexample,waterandoxygen.Thismakessurethereisnoairinthewater.T:Beforewefinishthisclass,let'slookatthescreen.Therearethreesentencesonit.CanyoutranslatethemintoChinese?LetthestudentstranslatethesentencesintoChinese.T:OK.Infact,thesesentencesinvolvetw