unit 3 science versus nature 教学设计 1

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1、Unit3ScienceversusNature教学案1设计意图：在第一课时的学习中(welcometotheunit)，学生对克隆技术和基因工程有了初步的了解。在此基础上通过本课的学习使学生进一步了解克隆技术的发展和运用。通过设计一些练习，使学生在了解人们对于克隆问题不同态度的同时，形成自己对这个问题的看法，并初步形成科学与自然和谐发展的观念，为深入学习本单元奠定科学的思想基础。本单元以reading的形式呈现，旨在提高学生的听、说、读、方面的能力，掌握一定的阅读技巧。Teachinggoals:1.makestudentslearnmoreaboutcloningtech

2、nologyanditsuses2.getstudentstolearndifferentopinionsoncloningandformtheirownviewsaboutit3.improvestudents’abilitiesofgettingthemeaningsofkeywordsandexpressionsaccordingtocontexts4.practicereadingskillsinthisunitTeachingdifficultandimportantpoints:1.howtofigureoutthepointsofviewsholdbydiffe

3、rentpersonsmentionedinthetext2.howtoformownviewsaboutsometopicsclearlyandsupportthemwithargumentsTeachingmethodsListening，skimming，scanninganddebateTeachingaidsataperecorderaprojectorandacomputerTeachingprocedures:Step1:revisionReviewthenewwordstaughtinlastclassandchecktheirhomeworkStep2:le

4、adinT:Hello！boysandgirls.Inlastclasswelearnedwhatiscloning.Acloneisanexactcopyofaplantorananimal.Ihavesomepicturesaboutcloninghere.Let’slookatthemonebyone.(showthepicturestothestudents)Picture1:amousewithaclonedhumaneyeonitsbackPicture2:Noah，thefirstclonedendangeredgaur.Gaurisakindofendange

5、redAsianox.Noahisthefirstclonedgaur，whichwasbornonJanuary8th.2001.Unfortunately，Noahdiedtwodayslater.Theexperimentprovedthatitwaspossibletosaveendangeredspeciesthroughcloning.Picture3:apostofthelatestfilmnamedX-men:ThelaststandThelatestscientificfilmX-men:Thelaststandisaboutsomegeneticallyc

6、hangedhumans.Someofthemintendtocontrolthewholenaturalhumans’worldwiththeirspecialpowerwhileotherstrytheirbesttopreventthem.Itishardtoimaginewhattheworldwouldbecome，ifthecrazygeneticallychangedhumanswerenotcontrolled.Step3:pre-readingQuestion1:WhoisthecreatorofDolly？2:Iscloninghumanembryosle

7、galallovertheworld？3:Whichcountry’sdoctorwanttobethefirsttoclonethehumanembryosStep4:firstreadingBeforethefirstreading，showthestudentsthereadingstrategiesonthescreenandexplainsomereadingskillsinthisunit.Thefollowingteachingproceduresaredesignedtopractice