Unit4 Global Warming教案复习过程.doc

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1、精品好文档，推荐学习交流Unit4GlobalWarmingTeachingaims:Tomakestudentsrealizetheharmofglobalwarmingandhowtoprotecttheearthfromglobalwarming;Todevelopstudents’senseofcooperativeability;Teachingimportantpoints:Toenablestudentstolearnaboutglobalwarmingandtodeveloptheirreadingability.Teachingdi

2、fficultpoints:Toenablestudentstotalkaboutwhatweshoulddotopreventglobalwarming.Teachingaids:MultimediaTeachingprocedures:Step1WarmingupTalkaboutweatherandleadtherelationshipbetweenseverecoldweatherandglobalwarming.Thenplayavideoandaskstudentstothinkaboutwhatthevideoshowssoastole

3、adtoday’stopic-globalwarming.Step2TalkingPlayasecondvideoandthestudentsaresupposedtotalkaboutwhatishappeninginthevideo.Thentheteachercomestoaconclusion:Theanimals’habitatsaredestroyed.Thatmeansanimalswilldieoutoneday.Step3pre-readingAskstudentsquestions:Whatisagreenhousemadeofa

4、ndusedfor?Haveyoueverseenagreenhouse?Agreenhouseismadeof______andisusedfor______________,especiallyduring_____weather.Step4groupworkAskstudentstoworkingroupstodiscusshowdoesagreenhousework?Theanswer:Theglasstrapstheheatfromthesunandkeepsitfromescaping.Sotheairinsideiswarm.Thism

5、akesthegreenhouseheatupandsotheplantscangrowthroughoutthecoldperiod.Step5reading•Askstudentstoskimthepassagequicklyandanswerthefollowingquestions:Whatarethe“greenhousegases”?•Whotalkedabout“greenhouseeffect”?•Whatisgreenhouseeffect?•Andthenchecktheanswers.Andthenaskthemtoreadit

6、againandworkinpairstoanswer:Canwelivewithoutgreenhouseeffect?•Whowrotethearticle?•What’sthenameofthemagazine?•Whatarethenamesofthethreescientistsmentionedinthearticle?•WhatdidCharlesKeelingfind?Anddoyouagreewithher?•DoesGeorgeHambleyagreewithDrJaniceFoster?•WhatdoesHambleysayab

7、outcarbondioxide?Step5detailedreadingTheteachertellsthatthetestcanbedividedinto4partssoshowthemadiagramandaskthemtomatchwhichpartwiththerightmainidea.Step6Anactivity—Makeaposter仅供学习与交流，如有侵权请联系网站删除谢谢3精品好文档，推荐学习交流Savingenergymeansreducingcarbondioxide,whichisourduty.Whatshouldwed

8、otoslowdownglobalwarming?Makeaposterforourschoolthatte