高中英语 Unit22 Environmental Protection The Second Period Lesson 1 Global Warming教案 北师大版选修8.docx
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高中英语Unit22EnvironmentalProtectionTheSecondPeriodLesson1GlobalWarming教案北师大版选修8
安徽省滁州市第二中学高中英语Unit22EnvironmentalProtectionTheSecondPeriodLesson1GlobalWarming教案北师大版选修8
Teachinggoals教学目标
1.TargetLanguage目标语言
a.重点词汇和短语
consensus,beyond,relevant,refer,bounce,pin,coincidence,condemn,federal,reservation,sacrifice,advocate,recycle,substitute,beyondone’scontrol,takeaction,aheadof
b.重点句子
Inthelastfewdecades,scientistshavereachedconsensusandreportedthathumanbeingsarecausingchangesintheEarth’sclimate—somethingpreviouslyseenasbeyondourcontrol.
2.Abilitygoals能力目标
Learnwhatglobalwarmingisandenablestudentstolearnitscausesandconsequences.
3.Learningabilitygoals学能目标
Byreadinganarticlehelpstudentstolearnhowtheycanhelpsolvetheproblemofglobalwarming.
Teachingimportantpoints教学重点
Whathumanactivitiesarecausingglobalwarmingandhowwecanhelpsolvetheproblemofglobalwarming.
Teachingdifficultpoints教学难点
Howwecanhelpsolvetheproblemofglobalwarming.
Teachingmethods教学方法
Listening,reading,discussing.
Teachingaid教具准备
Multimediacomputer.
Teachingprocedures&ways过程与方式
StepILeadingin
Inthisprocedurestudentswilltalkaboutthecausesandconsequencesofglobalwarming.Beginthelessonbyaskingstudentstodiscussthequestionsinbeforeyoustart
T:
YesterdaywelearnedfromthepassageinCultureCornerthatgasesfromburningcoalandoilarethemajorcausesofglobalwarming.Didyoumakeyoursurveyonhowstudentscometoschool?
S1:
Iasked40students.Teninthefortycometoschoolbybus.Twenty-oneridebicycles.Eightofthefortytakeacarandonlyonewalkstoschool.
...
T:
Fromthesurveyyoumadewecanseemostofstudentsinourschooltakeagreenwaytoschool.I’mgladwearenothavingsomanycars.Becausegasespumpedintotheatmospherefromcarswillspeedupglobalwarming.Haveyounoticedthatin2006wehadaverywarmwinter?
ExpertssayglobalwarminghaschangedtheclimateinChina.Inthisclasswearegoingtolearnmoreaboutglobalwarming.Wewillreadanarticle“Canwetaketheheat?
”Beforewestartthetext,pleasediscussthequestioninBeforeyoustart.
StepIIBeforeyoustart
DiscussthetwoquestionsinBeforeyoustartandworkoutthemeaningsofthegivenwords.
T:
OK,openyourbooksanddiscussthequestioninBeforeyoustartonPage6.Whichcountriesdoyouthinkcontributemoretoglobalwarming,developedcountriesordevelopingcountries?
Ss:
Developedcountries.Becausetheyhavemorecarsandfactoriesandgasesfromcarsandfactoriesarethemajorcauseofglobalwarming.
T:
Goodanswer.PleasescanthetextforthegivenwordsinEx2andtrytoworkouttheirmeaning.
Whilestudentsarediscussingthewords,Teachershouldwalkaroundtheclassroomandgivenecessaryhelpwhenneeded.
Severalminuteslater,askstudentstopresenttheiranswerseitherinEnglishorChinese.Studentsmayevenbeencouragedtoexplainthemeaningsusingpictures.ShowthesuggestedanswersonthePowerPoint.
StepIIIReadtolearn
Dealwiththereadingpart.
Scanning
Askstudentstoscanthetextandfindwhatexactlyglobalwarmingis.
T:
WhatisthetitleofLesson1?
Ss:
GlobalWarming.
T:
Doyouknowwhatexactlyglobalwarmingis?
Pleasescanthetextandfindtheanswerinthetext.
Ss:
GlobalwarmingreferstoanaverageincreaseintheEarth’stemperature.
T:
Quitegood!
Thenskimthetextandfindwhathumanactivitiesarecausingglobalwarming.
S:
Asaresultofincreasedindustry,agriculture,thecuttingdownofforests,theincreaseintransportandtheburningoffuels,nearly6tonesofcarbondioxidegoesintotheatmosphereeveryyearforeveryoneoftheEarth’s6billionpeople.Overthelast100years,theglobalaveragetemperaturehasincreasedby1°F.Ifwecontinuetoproducecarbondioxideandothergasesinsuchquantities,wearecondemninglifeonEarthandshouldexpectsevereconsequences.
Skimming
ShowthefollowingformonthePowerPointandaskthemtoworkingroupsandcompletetheform.
term
definition
causes
consequences
howtosolvetheproblem
Globalwarming
Fiveminuteslater,showthesuggestedanswersonthePowerPoint.
term
definition
causes
consequences
howtosolvetheproblem
Globalwarming
referstoanaverageincreaseintheEarth’stemperature.
Whengreenhousegasesintheatmosphereincrease,moreheatistrapped.(thegreenhouseeffect)
TheEarth’stemperaturerises.
Government’sactionandeachpersonshouldplaytheirpart(smallchangesmadebyeveryoneworldwide).
AskstudentstoskimthetextandthenfinishEx3onPage7.Studentsmaydiscussthequestionsingroups.
T:
LookthroughthequestionsinEx3onPage7first.Thenskimthetexttofindtheanswers.
Thencheckt