英语：Unit5《Thepowerofnature》教案（5）（新人教版选修6）ThefirstperiodWarmingupandpre-readingWarmingupInordertotalkaboutwhatvolcanoesareandhowtheyareformed,studentsneedtolearnSomenewwords:lavaerupt/eruptioncrateractive/dormant/extinctvolcanoesShowsomepicturesofdisastersAskstudenttonamedisastersasmuchastheyknow.Sampleanswer:cyclonetyphoonHurricanetornadosnowstormlandslideVolcanotsunamiearthquakefloodhailstormsandstormaskthemWhattheyfeelwhentheyseethepowerofnatureshowinginthepictures:Haveyoueverexperiencedone?Shareyouexperienceandfeelings?(wereyoufrightenedandhowfrightenedwereyou?)Someexpressionstips:scaredtodeathfrightenedworriedunforgettableunbelievableHaveyoueverseenavolcano?AskSstocompleteexercise1ingroups.Thenchecktheiranswersorallyasawholeclass.AskstudentstohelpyoumakealistofwordsconnectedwithvolcanoesDiscusswithstudentswhereintheworldactiveandextinctvolcanoesoccur.2.pre-reading1)Canyoutellmewhowillclimbintoalivevolcanoinordertotakethetemperatureoftheboilingrockinside?volcanologists——dotheytakeupacrazyjob?getthestudentstoanswerthesixquestionsinpre-readingtofindoutwhethertheywillenjoyworkingasavolcanologist.StudentscoulddothisactivityasasurveybyaskingothersintheirclassthesequestionsOrtheycoulddoitindividually.aftertheyhavecompletedthetask,surveytheclasstofindouthowmanymightenjoytheworkofavolcanologist.theirguesseswere.ThesecondperiodReadingandcomprehending1.FirstreadingSkinning&skimming1)Askstudentstoreadthroughthepassagequicklytogetamainideaofthewholepassage.Givethemalimitedtimetoreadthewholepassageinordertoencouragethemtopracticereadingforgeneralideasandtodiscouragethemfromreadingwordbywordmainidea:Thispassageisafirst-personaccountofavolcanologist’sexperiences.Thevolcanologistdescribedhisexcitingjobandwrotedownhisfirstsightofaneruption.Whatdoesavolcanologistdo?(answerinthetext)Thenletstudentsdothemultiple-choices(见课件)2)SetExercise1in“comprehending”eitherasagrouporwhole-classactivity.Explaintostudentsthatthepurposeofquestionsliketheseistohelpthemdevelopskillsofevaluatingatext.2.Secondreading(intensivereading)Beforereading,glancethroughExercise2onPage35.Choosesometoaskthemandchecktheiranswers:1).Whyisavolcanologist’sjobimportant?Volcanologistsstudyvolcanoessothattheycanwarnpeoplewhenthevolcanoisgoingtoeruptandsosavemanylives.2).WhyisthelavathatflowsonMountKilaueamoredangerousthantheactualeruption?Thelavaflowsdownthemountainandcancoveruporburnvillagesinitspath.therocksthateruptfromthevolcanousuallydon’tdamageanythingbecausenoonelivesthecrater.3).Whywasitdifficultforthewritertowalktowardstheedgeofthecrater?Theauthorwaswearingspecialprotectiveclothingthatmadeitdifficulttowalk4).Whatdoesthewriterfindimpressiveaboutvolcanoesevenafterstudyingthemfor20years?Theauthorisimpressedbythebeautyoftheeruptionandalsobyitspotentialtocausegreatdestruction.3.Thirdreading(Readagaintofindmoredetails)1).whatmadetheauthorrealizethataneruptionoccurred?answer:mybedbeganshakingastrangesoundmybedroombecameasbrightasdayanabosolutelyfantasticsightredhotlavawasfountaininghundredsofmetresintotheair2).whatdidthescientistsdoaftertheeruption?answer:putonwhiteprotectivesuits,helmets,bigbootsdroppedasclosedaspossibletothecraterslowlymakeourwaytotheedgeofthecraterlookeddownintotheredboilingcenterHomeworkSpendsometimeresearchingonedisaster.Youcanusebooks,magazines,newspapersortheInternet.Collectpicturesanddiagramandlookforinformationabout:•whatcausesthiskindofdisaster•actrualeventsthathappenedinthepastinchinaand/ortherestoftheworld•howpeoplehelpedthevictims•whatisbeingdonetopreventthedisarsterhappeningagainortolessenthedamage
