2/2Unit2Project公開(kāi)課教案巢湖學(xué)院潘寒婷巢湖市第六中學(xué)唐德清I.LearningobjectivesBytheendofthelesson,studentswillbeableto:1.befamiliarwithnamesandpositionsofthesevenplanets;2.talkaboutpossibilityoflivingonthesevenplanetsandthemoon;3.learnthecorevocabulary;4.understandtheprofileHowtoliveonMars;5.makeaprofileonhowtolivebeyondtheEarth.II.Keycompetencefocus1.Exhibitthestudents’imagination.2.Developthestudents’poweroffindingproblemsandsolutions.3.Improvethestudents’writingskills.III.Predictedareaofdifficulty1.Dialogueaboutthepossibilityoflivingonthesevenplanetsandthemoon.2.MakinganessayonhowtolivebeyondtheEarth.IV.TeachingproceduresTgreetstheclass.T:Classbegins,boysandgirls!Goodmorning/afternoon!Step1AP27Discussingthesevenplanetsandthemoonwherehumanscouldpossiblylive.1.IdentifythesevenplanetsT:Lookatthechart.Whatisit?T:It’sthechartofthesolarsystem.T:Whatisthefirstsphere?T:It’sthesun.T:Eightplanetsrefertotheeightmajorplanetsinthesolarsystem.Accordingtothedistancefromthesun,theyare2.________3.________4.________5.________6.________7.________8.________9.Answers:1.Thesun2.Mercury/?m??kjur?/(水星)3.Venus/’vi?n?s/金星4.Earth5.Mars6.Jupiter/?d?u?p?t?/(木星)7.Saturn/?s?t?n/(土星)8.Uranus/‘j??r?n?s/(天王星)9.Neptune/?neptju?n/海王星2.BP27Discussthesevenplanetsandthemoonwherehumanscouldpossiblylive.TWorkoutthedialoguetipstogetherwithstudents.MarsisaratherharshenvironmentnooxygeninitsatmosphereverycoldradiationtheatomosphericpressureInaprotectedenvironmentinaheatedcapsulewithsourceofoxygen.Sampleanswers:W:CanhumansliveonMars?M:It’shardtodoit,becauseMarsisaratherharshenvironment.W:Wouldyoupleasetellmemoreaboutit?M:First,Marshasessentiallynooxygeninitsatmosphere.Henceahumancouldlivefor2or3minutesintheMarsatmosphere.Afterthat,humanwoulddie.W:That’sterrible.M:Secondly,itisverycoldontheMars.W:SowewoulddieoffreezingandlackofoxygenonMars.M:Youarerightifunprotected.Thirdly,radiation.W:Weneedprotectionagainstradiationtobehealthyandnotgetcancer.M:There’remanyotherproblems.Forexample,theatmosphericpressureisnotsuitableforhumansjustlikehowwhenyougodeepintheoceanthepressureincreases.W:Oh,it’shopeless!M:However,humanscouldliveinaprotectedenvironmentinaheatedcapsulewithsourceofoxygen.W:IhearthereiscurrentlyamissionplannedbyaprivatecompanytosendhumanstopermanentlyliveonMars!M:Timewilltellifthey’resuccessful.【設(shè)計(jì)意圖：首先幫助學(xué)生認(rèn)識(shí)太陽(yáng)系八大行星的名稱和位置，然后討論人類殖民的可能性。為后面寫(xiě)作奠定基礎(chǔ)?！縎tep2CP27Understandingtheprofile“HowtoliveonMars”Tasksstudentstoreadthroughtheprofileandanswersomequestions.T:Whatproblemsarementionedintheprofile?Andhowcanwesolvethem?TDiscusstheproblemsandsolutionsmentionintheprofile.T:Thefirstproblemis“radiation”andthesecondone“duststorm”.T:Wecanbuildpermanentsheltertoprotectagainstradiationandduststorm.【設(shè)計(jì)意圖：理解短文HowtoliveonMars，為下一步寫(xiě)作奠定基礎(chǔ)?！縎tep3MakeaprofileonhowtolivebeyondtheEarth.T:Whichofthesevenplanetsandthemoondoyouthinkwecancolonizeinthenearfuture?T:Supposewelivedonthemoon,whatproblemswouldwemeetandhowcouldwesolvethem?1.Makeanoutlineoftheprofile.T:Listtheproblemsandsolutions.ProblemsSolutionsBreathableairHarvestoxygeninthesoilWaterCollecttheburiediceatthesouthpoleofthemoon.CreatewaterwithoxygenandhydrogenshippedfromtheEarth.PowerManufacturesolarcellsGenerateelectricityfromthereactionofhydrogenandoxygenUsenuclearpowerFoodGrowfoodusingchemicalslikecarbon,nitrogenoxygen,hydrogen,etc.2.Writetheprofile.(Iftimeislimited,assignitashomework)T:Writeashortarticleonhowtosolvetheproblemsoflivingonthemoon.Sampleanswer:Whatifwelivedonthemoon?Wouldn’titbecooltobeabletolive,vacationandworkonthemoon?Let’ssaywedowanttocolonizethemoon.Buttherearesomebasicneedsthatthemooncolonistswouldhavetotakecareof:breathableair,water,powerandfood.Obtainingbreathableair,intheformofoxygen,isfairlyeasyonthemoon.Thesoilonthemooncontainsoxygen,whichcanbeharvestedusingheatandelectricity.Wateristrickier.There’snowsomeevidencethattheremaybewater,intheformofburiedicethathascollectedatthesouthpoleofthemoon.Ifso,waterminingmightbepossible.Ifwaterisn’tavailableonthemoon,itmustbeimportedfromEarth.Onewaytodothatwouldbetoshipliquidhydrogenfromtheearthtothemoon,andthenreactitwithoxygenfromthemoon’ssoiltocreatewater.Asaside-benefit,thehydrogencanreactwithoxygeninafuelcelltocreateelectricityasitcreateswater.Poweronthemoonisaninterestingchallenge.Itwouldprobablybepossibletomanufacturesolarcellsonthemoon,butsunlightisavailableonlypartofthetime.Asmentionedpreviously,hydrogenandoxygencanreactinafuelcelltocreateelectricity.Nuclearpowerisanotherpossibility,usinguraniumminedonthemoon.Foodisalsoaproblem.ThefirstthoughtthatanyoneonEarthwouldhaveis,“Growthefoodonthemoon”usingchemicalslikecarbon,nitrogenoxygen,hydrogen,potassium,phosphorous,andsoon.Togrowatonofwheat,you’llhavetoimportallthechemicalsnotreadilyavailableonthemoon.Oncethefirstcropisin,andaslongasthecolony’spopulationisstable,thenthechemicalscanbereusedinanaturalcycle.Theplantgrows,apersoneatsit,andthepersonexcretesitassolidwaste,liquidwasteandcarbondioxideinthebreath.Thesewasteproductsthennourishthenextbatchofplants.【設(shè)計(jì)意圖：基于第一、二步的討論和樣本學(xué)習(xí)，先討論、后寫(xiě)提綱和短文?！縎tep4BuildingcorevocabularyT:Learnthefollowingcorevocabularyandfinishtheexercises.1.dustn.finedrypowderconsistingofparticlesofearth,dirt,etc.v.removedustfrom(sth.)bywipingdustn.dustyadj.dustern.;dustbinn.2.sheltern.conditionofbeingprotected,keptsafe,etc.n.structurebuilttogiveprotectionn.buildingprovidingrefuge,esp.forhomelesspeoplev.protectsb./sth.,givesheltertosb./sth.shelterv.shelteredadj.3.constantadj.goingonallthetime;happeningagainandagainadj.unchanging;fixedadj.firm;faithfulconstancyn.constantadj.constantlyadv.4.investmentn.theuseofmoneytogetaprofitortomakeabusinessactivitysuccessful,orthemoneythatisusedinvestv.investmentn.inventv.;invitev.T:Fillintheblankswithproperfo