學(xué)必求其心得，業(yè)必貴于專精學(xué)必求其心得，業(yè)必貴于專精學(xué)必求其心得，業(yè)必貴于專精Module4SandstormsinAsiaPeriod6Task＆Modulefile&Reading(page87)eq\o(\s\up7(），\s\do5（整體設(shè)計(jì)))教學(xué)內(nèi)容分析作為本模塊的最后一部分，本部分主要幫助學(xué)生復(fù)習(xí)本模塊所學(xué)的內(nèi)容。模塊文檔展示了主要的語言點(diǎn),這是一個(gè)可以培養(yǎng)學(xué)生自我反思和總結(jié)學(xué)習(xí)策略的很好方法.在本部分將為不同水平的學(xué)生提供不同的練習(xí)。任務(wù)主要在于鼓勵學(xué)生談?wù)摫Ｗo(hù)環(huán)境的重要性以及如何保護(hù)環(huán)境。練習(xí)冊87頁的閱讀活動是本模塊的泛讀材料，目的在于進(jìn)一步培養(yǎng)學(xué)生的閱讀能力。在這節(jié)課，為了幫助學(xué)生把握文章的主題思想以及細(xì)節(jié)方面的信息，應(yīng)當(dāng)向?qū)W生介紹一些閱讀策略。三維目標(biāo)設(shè)計(jì)Knowledgeandskills1．Tohelpthestudentsrevisethefollowingwordsandexpressions.Words：（見Modulefile)Expressions：（見Modulefile)2．Tocultivatethestudents’learningstrategiesofself-reflectionandsummary。Processandmethods1．Toencouragethestudentstotakeanactivepartinthelearningactivitiesbygivingthemclearinstructionsonwhattodowhilereadinganewpassage.Inaddition，correctpossiblemistakestheymightmakeinaproperwaybymakingnecessarychangeswhilerepeatingtheirsentences。2．Toencouragethestudentstocooperatewiththeothersbyworkinginpairsoringroupsoffour。3．Tomakesurethatthestudentspayattentiontotheimportantpointsofthismodule。4．Toencouragestudentstoevaluatetheeffectoftheirownlearningbysummarisingtheeffectivelearningmethods。Emotion，attitudeandvalue1．Tohelpthestudentsenlargetheknowledgeaboutdesertification。2．Tohelpthestudentsappreciatetheadvantageofcooperativelearning.教學(xué)重點(diǎn)1．Todisplaythemoduletaskandguidethestudentstocarryontheevaluationandsummary.2．Tohelpthestudentslearnhowtowriteanarticleaboutoneenvironmentalproblem。教學(xué)難點(diǎn)1．Tohelpthestudentslearntoorganisetheirownsentencestodescribeoneenvironmentalproblem。2．Tocarryoutaccurateevaluationwhiledealingwiththestudents'sentencestheymaketoexpresstheirideasinclass。eq\o（\s\up7()，\s\do5(教學(xué)過程)）Step1Prepareapresentationondesertification【15min。】1．WorkingroupsAskthestudentstomakealistofthesandstormaccordingtotheinformationthey'vegotfrommagazinesorTVprogrammes.2．Askstudentstodiscusstheitemsintheirlistwithothermembersoftheirgroup。PhenomenaReasonsSuggestions。。.3。PresentationPresentthecontenttotherestoftheclassbasedontheirdiscussions。Step2Modulefile【20min。】1．Givethestudents10minutestogothroughthemodulefile，tickingthethingstheyknowabout，makingaquestionmarknexttothosethingstheyarenotsureof，andacrossnexttothosetheydon’tknow。2．Haveadictationofthewordsandphrasesofthismodule.3．Reviewthegrammarrules：1)Theinfinitive2）But＋infinitiveExercise:Puttheverbsinbracketsintothecorrectinfinitiveforms。a．Shehasnochoicebut______（sleep）．b．Tomdidnothingbut______(watchTV）ANSWERSa.tosleepb.watchTV4．Finally,reviewFunctionandEverydayEnglish.AskthestudentstotalkaboutwhattheylearnedintheFunctionandEverydayEnglish.Step3Reading(page87)【8min。】1．Readthearticleandfindouttheanswerstothefollowingquestions。1)WhatwastheDustBowlandwhendidithappen？2)Whatpartsoftheworldareaffectedbydesertification？Askthestudentstoreadthroughthetextquicklyandsilently。Givethemthesuggestionthattheyshouldfocusonthegeneralideaandalsoonthedetailedmeaning。Makesuretheydon’treadthetextaloud。ANSWERS1）Itwasaduststorminthe1930sintheUSA。2）Manyregionsoftheworldarebeingaffected；ChinaandAfricaaretwoexamples.2．Readthearticleagainandanswerthefollowingquestions。1）Whatcausedthedisaster？2)Howdoesourgovernmentdotofightagainstthedesertification?3）WhataretheconditionsinAfrica？ANSWERS1)Itwascausedbybadfarmingmethodsandseveralyearswithverylittlerainfallmadethingsworse.2）TheChinesegovernmentisfightingdesertificationbyimprovingfarmingmethodsandplantingtreesandgrass.3）InAfricatheyareworsethananywhereelse。Theyarelosingalargepartoftheiragriculturallands。Nowtheycan'tproduceenoughfoodfortheirpopulationandtheirgovernmentsdon’thaveenoughmoneytofightdesertification.3．Languagepoints1）TheDustBowlofthe1930swastheworstagriculturaldisasterinthehistoryoftheUnitedStates。2）Over200，000peoplewereforcedtoleavetheirhomesandmovedwesttothecities.3)However，thereisstillalottobedonebeforepeoplecanfarmthelandagain.Step4Makingasummary【2min.】Summarisethewholeperiod.First，emphasisethemainpointsofthismoduleinordertobetterguidethestudentstocarryontheself-reflectionandsummary.Makesurethatthestudentshaveagoodcommandofthevocabularyandphrasesaboutprotectingtheenvironment.Thensummarisethereadingstrategies-skimming，scanning，guessingandkeywordsinordertohelpthestudentsbetterunderstandapassage。Step5HomeworkAskthestudentstowriteacompositionaccordingtothepresentationinStep1。eq\o（\s\up7（),\s\do5（教學(xué)參考))SandstormAmassivesandstormhasenvelopedmostofnorthernChina,coveringthecapitalBeijinginashroudofdensedustandreducingvisibilitytolessthan50metresinsomeareas.Thestormisthestrongestandmostintensethisspring，andhitChina'snorthonMarchwithfiercewinds.Sandstormsarefrequentinspring，triggeredbysuddenseasonaltemperaturechanges。Itcoverstheentirecitywithlayersofsand,andairtransportationhasbeenaffectedinthestorm。hitregions,whichspreadfromthewesttotheeastofnorthernChinaincludingGansuandNingxiaprovincesaswellastheInnerMongoliaAutonomousRegion。Therefore,manypeoplewonderhowmuchworsetheweatherwillbecomewhenthespringsandstormssweepintothemainlandoneafteranother.Infactthesandstormhasposedaseriousthreattotheairqualityandenvironment。Sandstormslikethese，whichoccurredinancienttimes，arewidelyknownamongtheherdsmeninInnerMongoliaas“Huang-mao。feng，”meaning,“windthatcarriesyellowsand”．Inrecentyears,thesesandstormshaveoccurredmorefrequently，atshorterintervals，andwithgreaterintensity.AsandstormonDecember31st,2000wasthefirstonetohitChinaindecades.Sincethen，therehasbeenoneeverymonth.Wecan’thelpbutask:isthisaphenomenonpurelypoweredbyMotherNature，anoccurrenceoverwhichwehavenocontrol？Thefactisthatsandstormsarecausedlargelybyhumanactions—mainlyexcessiveherdingandexploitationofthegrasslands.Undernormalconditions，InnerMongoliaprovidesgrazingforuptosomefortymillionsheep；yet，asmanyasseventymillionsheephavebeenfeedingonthatarearecently。Becauseoftheincreasingpriceofgoats’wool,herdsmeninInnerMongoliahavebeenhustlingtoraisegoats.Inthesetimes，desertificationisaprimaryenvironmentalconcern。Unrestrictedfarmingisbelievedtobethemaincauseofdesertification.Seriousdestructionofvegetation，datingbackfromtheCulturalRevolutioninthe60’sand70'stoasrecentlyastwoyearsago,haspromptedtheten。thousand.people。plant。treesactivity，withanaimofreducingtheincidenceofsandstorms。However，suchmeasurestouchonlythetip，butdonotaddressthebasisoftheproblem.Nooneeverbotherstocareforthetreesafterplantingthemandsothesurvivalrateofthetreesisstaggeringlow。Thissimplyisnotaviablemethodofresolvingtheproblem.Withtheglobalclimateconstantlychanging,sandstormsareexpectedtooccurmorefrequently，andhumanitywillbeforcedtoconfrontthedelayedeffectsofhavingrecklesslyexploitedtheenvironment。Itisonlyrecentlythatsomeofus，whohavebeenpursuingeconomicgoals，havebegunnoticingtheenvironmentalbacklash.Perhapsman,whoisfinallyeatinghisownbitterfruits,willunderstandthateconomicdevelopmentdoesnothavetobeattheexpenseoftheenvironmen