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1、英语必修5译林牛津版Unit3第1课时表格教案主备人执教人授课日期[来源:学科网]班级总课题M5U3总课时分课时1课型新授课题M5U3Welcometotheunit教学目标1.thinkmoreabouttherelationshipbetweenscienceandnature.[来源:学科网]2.describesomeitemsandatmospherewithscientificterms.3.expresstheiropinionsonclonedanimalsandhumansaswell.4.developanintere
2、stindoingmorereadingandresearchonthetopic.教学重点Words,phrasesandsentencepatterns教学难点Practicalusage教具Blackboard,slidesandhandouts教学内容教法学法Teachingprocedures:Step1Leadin(PPT4-7)Playadialogueaboutheight-increasingoperationsandaskstudentstofillintheblanks.Aftercheckingtheanswers
3、,allowsometimeforstudentstofreelyexpresstheiropinionsonheight-increasingoperations,thusintroducethemajortopic“scienceversusnature”。[Explanation]用一段有关增高术的听力引入主题，主要是考虑到这一切入点与实际生活较为贴近，比较容易让学生有话说，作为人类利用科学对自然的东西做出改变的一个典型例子可以顺其自然得引入本课主题。Step2Scienceversusnature(PPT8)1.Explainth
4、eword“versus”(Twosidesareagainsteachother)2.Brainstorming.Askstudentstothinkofothercasesinwhichsciencegoesagainstnature?TheteachercanintroducesomenewvocabularylikeGMfoodandplasticsurgerywhichmightbeusefulinlaterteaching.Showsomepicturestohelpthembetterunderstandthesething
5、s.Suggestedanswers:GMfood,cloning,dams,artificialrainfall,organtransplant,air-conditioner,cloudseeding,plasticsurgery,euthanasia,etc.1.Allowstudentssometimetohavealightdiscussiononadvantagesanddisadvantagesofanyoftheabovecases.2.Intermsofscienceversusnature,whatdoyouthink
6、therelationshipbetweenscienceandnatureshouldbelike?(Bothadvanceinharmony)[Explanation]本节将主题定位在“科学对抗自然”，让学生了解了这一关系后，用头脑风暴的形式让学生从增高术联想起更多的现实生活中能体现这一关系的案例，如转基因食品，人工雨等。Step3Cloning(PPT9-11)1.DisplaypicturesofDollyandnormalsheeponthescreen.TellthemDollyisaclonedsheep.Butitlook
7、snodifferentfromnormalsheep.Showmorepicturesofclonedanimals(clonedcalves,pigs,monkeyandmule).Theirnamescanbeintroducedhere,whichmightarousestudents’moreinterest.2.Introducetheconceptof“copy”.Askthestudentstothinkaboutthisquestion:Areclonedanimalsexactlythesameasthe“mother
8、animals”？（Theymayhavethesameappearancebuttheirphysicalqualitiescanbeverydifferent.Manyclonedanim
