Unit4Globalwarming教學設計第6課時Period6SummingUp，LearningTipandAssessment教學內(nèi)容分析Thisisthelastteachingperiodofthisunit，sotheemphasisshouldbeplacedongoingoverandsummarizingwhathasbeenlearnedinthisunit.Itincludesthefollowingparts：SummingUp，LearningTip，CheckingYourselfandsomeotherconsolidationexercises.SummingUpsummarizesthewholeunitfromtheaspectsoftopicsandvocabularyandgrammar.Theteachercanfirstusethisparttoletstudentssumupwhattheyhavelearnedinthisunitandthenletthemfindoutwhattheycan'tunderstandverywell.LearningTipgivesstudentsinstructionsonwhichkindofnounsbeginwithacapitalletter.Letthestudentsthinkaboutwhattheyalreadyknowabouttherulesandwhatnewinformationtheywillfind.CheckingYourselfonPage68intheWorkbookaimsatencouragingstudentstomakeaself－assessmentaftertheyfinishlearningthisunit.Itisveryimportanttoimprovetheirlearning.Ofcourse，atestingassessmentisalsoneeded.Inthisperiod，theteachercanalsoprovidemorepracticetoconsolidatewhatstudentshavelearnedinthisunit.三維目標設計Knowledgeandskills1．Togetstudentstomasteralltheusefulnewwordsandexpressionsinthisunit.2．Tohavestudentsunderstandthenewgrammaritem“theuseof‘it’(2)”better，andenablethemtousethesentencepatternscorrectly.3．Todevelopthestudents'abilitytousetheimportantlanguagepointsinthisunit.ProcessandmethodsDesignsomeadditionalexercisesforstudentstodoinorderthattheycanlearntouseandgraspallthecontents.Emotion，attitudeandvalue1．Toencouragestudentstolearnmoreaboutglobalwarmingandenvironmentalprotection.2．Toinspirethestudentstothinkupmoreeffectivemeasurestopreventglobalwarming.教學重、難點Usingwhattheyhavelearnedinthisunittosolverealproblems.教學過程Step1Revision1．Checkthehomeworkexercises.2．Dictatesomeusefulnewwordsandexpressionsinthisunit.Step2Lead－inAskthestudentstoturntoPageaboutwhattheyhavelearnedinthisunitandticktheboxestoseehowwelltheyhavelearnedthem.Step3SummingupFiveminutesforthestudentstosummarizewhattheyhavelearnedinthisunitbythemselves.Thencheckandexplainsomethingwherenecessary.Suggestedanswers：Writedownwhatyouhavelearnedaboutglobalwarming：(Students'answersmayvary.)ThetemperatureoftheearthroseaboutonedegreeFahrenheitduringthe20thcentury.Itishumanactivitythathascausedthisglobalwarming.Allscientistssubscribetotheviewthattheincreaseintheearth'stemperatureisduetotheburningoffossilfuels.Somebyproductsofthisprocessarecalledgreenhousegases，whichtrapheatandwarmtheearth.Withoutthegreenhouseeffect，theearthwouldbecoolerthanitis.Butscientistsdon'tagreewitheachotherontheeffectsofglobalwarming.Somethinkitwillbeadisaster，butsomeothersthinkit'sagoodthingandwecandonothingtopreventthetrend.Byreadingthesecondpassage，wealsoknowsomeeasyandeffectivemeasureswecantaketodealwithglobalwarming.Fromthisunityouhavealsolearned：Someusefulwords：tend，oppose，state，glance，quantity，range，tendency，circumstance，opposed，steady，widespread，average，consume，subscribe，advocate，refresh，graph，phenomenon，fuel，data，trend，catastrophe，flood，consequence，existence，commitment，pollution，growth，motor，can，microwave，educator，contribution，presentation，disagreement，random，mild，outer，electrical，casual，nuclear，perSomeusefulexpressions：comeabout，subscribeto，quantitiesof，goup，resultin，beopposedto，evenif，keepon，onthewhole，onbehalfof，putupwith，solongas，andsoon，greenhouseeffectNewgrammaritem：theuseof“it”—howtouse“it”foremphasisinasentence.Functionalitems：howtoexpressagreementanddisagreement，blameandcomplaint.Step4PracticeShowtheexercisesonthescreenorgiveoutexercisepapers.Part1Vocabulary1．Researchersc______livingconditionsinLondonwiththoseinotherplaces.2．Theirpricesarelowc______tothoseinothershops.3．Idon'tthinkanybodym______toherapartfromherself.4．Heprefersq______toqualitywhenfoodisconcerned.5．Thed______wehavecollectedarenotenoughtobeconvincing.6．Everythingwasinas______ofdisorder.7．Whatisthea______rainfallforAugustinyourcountry?8．Eachi______boyintheclasshashisownpersonalities.9．Wehavebeenhavingafewa______inthecommitteelately.10．Theywerep______inthehistoryofmusic.11．Asac______ofbeinginhospital，Shellydecidedthatshewantedtobecomeanurse.12．Adoctorhasthet______“Dr”infrontofhisname.13．Thenumberofthechildrenintheschoolhasd______by500thisyear.14．Thecookerisn'tworkingbecauseofane______fault.15．Thefoodwascoldandtheguestsquarreled—thewholedinnerwasac______.Part2Usefulphrases1．在20世紀期間____________2．導致____________3．另一方面____________4．通過燃燒化石燃料____________5．大量的____________6．忍受污染____________7．有關系，有影響____________8．大體上，基本上____________9．高達5攝氏度____________10．發(fā)生____________Part3Completethefollowingsentencesaccordingtothetexts.1．Anenergysourceisrenewablewhensuppliesofitnever____________.2．Itisarapidincrease______________________________.3．Thereis____________thattheearthisbecomingwarmingbutthereis__________________whetheritis__________________hascausedthisglobalwarmingorwhetheritis________________________.4．______thegreenhouseeffect，theearth____________aboutthirty－threedegreesCelsius________________________.5．The____________ofcarbondioxide______thatmoreheatenergyistrappedintheatmosphere______the______________________________.6．Itwas__________________CharlesKeeling______made__________________theamountofcarbondioxideintheatmospherefrom1957to1997.7．Theyalsobelieve____________theburningofmoreandmorefossilfuelsthatis____________thisincreaseincarbondioxide.8．Therearesomeverydifferent______amongscientists__________________.9．SometimesIfeelthat______can'thaveany__________________huge______problems.10．Finallyandmost______，talk______yourfamilyandfriends______globalwarmingandtellthemwhatyouhavelearned.11．Remember—your____________.Part4Multiplechoice1．Isit______toyouthatthegovernmentishavingahardtimenow?A．ofmuchimportantB．ofmuchconsequenceC．ofveryimportanceD．ofmuchconsequent2．Somethingmustbedoneto______theriverfrom______.A．stop；beingpollutedB．stop；pollutingC．prevent；pollutionD．keep；polluted3．There______quantitiesofapplesinthebasketandtherewas______milkinthebucket.A．were；anumberofB．was；quantitiesofC．was；agoodmanyD．were；aquantityof4．______wegetgoodweatheritwillbeasuccessfulholiday.Whichiswrong?A．SolongasB．ProvidedthatC．SolongD．Onconditionthat5．—Goforapicnicthisweekend，OK?—lovegettingclosetonature.A．Idon'tthinksoB．IbelievenotC．Icouldn'tagreemoreD．Iamafraidnot6．—Now，whereismypurse?—______！Wewillbelateforthepicnic.A．ComeonB．Don'tworryC．TakeyourtimeD．Takeiteasy7．Itwasnotuntil1999______regularradiobroadcastbegan.A．whileB．whichC．thatD．since8．Canitbeintherestaurant______wehaddinnerlastSunday______youleftyourwallet?A．where；whereB．where；thatC．that；whereD．that；that9．—What'sthematterwithyou?—______thewindow，myfingerwascutunexpectedly.A．CleaningB．TocleanC．WhilecleaningD．WhileIwascleaning10．Theotherday，mybrotherdrovehiscardownthestreetat______Ithoughtwasadangerousspeed.A．a(chǎn)sB．whichC．thereD．whatSuggestedanswers：Part1Vocabulary1．comparedPart2Usefulphrases1．duringthe19thcenturytotheotherhandtheburningoffossilfuels/byburningfossilfuelsgreatdealof/scoresofupwiththepollution7．makeadifferencethewholemuchasfivedegreesCelsius(5℃)aboutPart3Completethefollowingsentencesaccordingtothetexts.1．runouttomostnaturalchangesdoubt；fiercedebateover；humanactivitythat；justanaturalphenomenon；wouldbe；coolerthanitisamount；means；causing；globaltemperaturetogoupscientistcalled；who；accuratemeasurementsofis；resultingin；towardsthisissue；effectonsuch；environmental；with；aboutcountsPart4Multiplechoice1～5BADCC6～10ACBDDStep5LearningtipAskthestudentstoturntoPagethroughthepassageandmakesuretheyunderstandit.EncouragethemtodoasthepassagetellsbecauseiftheyaredoingsotheywillbeteachingthemselvesausefulwayofusingEnglishwords.Step6Assessment1．Checkingyourself(onPage68intheWorkbook)Firstgetthestudentstothinkaboutthesequestionsindividually.Thentheycandiscussingroupssharingtheirexperience.Theteachercanjoininandgivethemadviceandsuggestionswherenecessary.2．TestingassessmentMultiplechoice1．______withthesizeofthewholeearth，thebiggestoceandoesnotseembigatall.A．CompareB．WhencomparingC．ComparingD．Whencompared2．Pleasetellmehowtheaccidentamstillinthedark.A．camebyB．cameoutC．cametoD．cameabout3．Theaccident______thedeathoftwopassengers.A．resultedfromB．resultedinC．resultedofD．resultedwith4．ItisinthewestofChina______thereisnodoubt______itisgoingtoraintomorrow.A．where；whetherB．that；thatC．that；whetherD．where；that5．Itwas1969______theAmericanastronautssucceededinlandingonthemoon.A．thatB．whenC．onwhichD．which6．Itwas______backhomeaftertheexperiment.A．notuntilmidnightdidhegoB．untilmidnightthathedidn'tgoC．notuntilmidnightthathewentD．untilmidnightwhenhedidn'tgo7．There'ssomedoubt______he'llkeephispromise.A．whetherB．ifC．thatD．which8．The______parentswereall______forthechildren'ssafety.A．concerned；concernedB．concerned；concerningC．concerning；concerningD．concerning；concerned9．Thestudentsages______15to18.A．rangeB．rangedC．rangefromD．rangesfrom10．______，we'llgocamping.A．WeatherpermitsB．Ifweatherwillperm