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1、Unit13We’retryingtosavetheearth.SectionA3a-3b(Period2)教学设计Teachingaims:1.Knowledgeobjectives：1)Learnandmasternewwords：sharks,fin,cruel,harmful,chain,ecosystem,industry,law;2)Learnandmasterthephrases：hearof,cutoff,beharmfulto,atthetopof,thefoodchain.2.Abilityobj
2、ectives：Beabletogetthemainideathroughreading,BeabletomastersomereadingskillsCanexpressopinionsaboutcallingupotherstoprotecttheanimalsandtheearth.3.Moralobjectives：Afterlearning,studentscandevelopasenseofprotectinganimalsandtheenvironment.TeachingkeypointsMaster
3、somereadingskillsTeachingdifficultpointsMastersomereadingskills;Knowhowtowriteapassageaboutprotectinganimals.Teachingprocedures:Step1.RevisionSowapictureaboutthepollutedearthandreviewtypesofpollutioninlastperiod.(Letmorestudentstakepartinthisclassactivity)Step2
4、.Lead-inT:Theenvironmentisbecomingworseandworse,meanwhile,therearealsoanimalsthatareingreatdanger.(Letstudentsgivesomeexamplesofendangeredanimals.)T:Othercreaturesthatliveintheoceansarealsoendangered.设计意图：由环境污染，很自然的过渡到濒危动物，进而再到濒危海洋生物--鲨鱼。层层递进。视频加深了学生对将要学习课文的了解，
5、同时增加学习的兴趣。Step3.Presentation(Pre-reading)1.Playavideoaboutsharksandleadinthenewwordsandphrases.(Makepreparationforreading.)T:What’thevideoabout?2.Showpicturesaboutsharks.Guidestudentstospeakoutnewwordsandphrases.设计意图：一方面，直观形象的展示海洋生物的现状，以及鲨鱼在海洋生物链中的重要性；另一方面，反映了人
6、类捕“鲨”的残忍性。同时，处理了本课的新词汇及短语。Step4.ReadingTask1.Fastreading.Letstudentsreadthetitleandthefirstandthelastsentencesineachparagraphandmatchthemainideas.Talkaboutsharkfinsoup.Para.1Sharksareendangerednow.Para.2Twogroupsabout“finning”.Para.3Task2.Readthepassagequicklya
7、ndjudgethesentencesTorF.①Sharkfin（鱼鳍）soupisfamousandexpensiveallaroundtheworld.②Sharksareatthebottomofthefoodchainintheocean’secosystem.③WildAidandtheWWFareenvironmentalprotectiongroupsinChina.④Sharkfinsaregoodforhealth.Task3.Dealwiththetasksparagraphbyparagrap
8、h.Readpara.1andanswerthequestions:①WhereisSharkfin（鱼鳍）souppopular?②Whatareyoudoing,whenyouenjoyabowlofSharkfin（鱼鳍）soup?Readpara.2andanswerthequestions:①Whatdopeopledo,whenth
