高中英语《unit 3 welcome to the unit》教案 新人教版必修5

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1、江苏省新沂市第二中学高中英语《Unit3Welcometotheunit》教案新人教版必修5教学目标1.Toarousestudents’interestintheunittopic2.Tohelpstudentsknowmoreaboutcloningtechnology3.Toencouragestudentstoparticipateinthediscussionrelevanttocloning重点1.Toarousestudents’interestintheunittopic难点3.Toencouragestudentstoparticipateinthed

2、iscussionrelevanttocloning教法及教具Listening,Discussing教学过程教学内容个案调整教师主导活动学生主体活动Step1Brainstorming1.AskstudentstoreadthetitleoftheunitScienceversusnature.Drawstudents’attentiontotheword‘versus’.Tellthemthat‘versus’isusuallyusedwhendiscussingsportscompetitionsorthelaw,whichmeansthattwoteamsors

3、idesareagainsteachother.Encouragestudentstothinkwhy‘versus’isusedhere.Askstudentsthefollowingquestions:e.g.:Doyouthinkthereisconflictbetweenscienceandnature?Whatmighttheconflictbe?2.Showapictureofthefirstclonedmammal,Dolly.GivesomeintroductionaboutthecreationofDolly.Tellstudentsthisnewte

4、chnologyiscalled‘cloning’,whichproducesanexactcopyofananimaloraplantfromitsowncells.3.LeadstudentstolearntheunitwhilethinkingabouttherelationshipbetweenthetitleoftheunitScienceversusnatureandcloningtechnology.Step2Sharinginformation1.Showthefollowingfivepicturesonebyone,eachofwhichshowsa

5、successfullyclonedanimal.Astothefivepictures,weconductthefollowingactivities.(Picture1)theworld'sfirstclonedadultanimal.ThescientistswhoclonedDollyaretostopexperimentsinvolvinggeneticallymodifyingpigsforhumanorgantransplantsbecauseofconcernsthatdeadlynewdiseasescouldbepassedontopeople.(P

6、icture2)Theworld'sfirstclonedpigswereproducedfromanadultfemalepigusingadifferenttechniquefromtheonethatproducedDolly.(Picture3)TellstudentsthatthekitteninthepictureiscalledCc.Itsnameisfrom‘Copycat’.ScientistsintheUSAcreateditwithacelltakenfromitsmother,Rainbow.ItwasborninDecember2002.(Pi

7、cture4)ThenameoftheclonedmonkeyisANDi.Itisfrom‘insertedDNA’speltbackwards.Itisthefirstgeneticallymodifiedmonkey.ThetechnologyisdifferentfromthatusedforDolly.Step3Discussion1.Doyouthinkgovernmentsshouldpasslawstoprohibithumancloning?Whyorwhynot?PartATheyshouldn’tfor…Reason