高中英语 unit3 the world online welcome to the unit教学设计 牛津译林版选修7

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Unit3TheworldonlineWelcometotheunit教学设计单　　元：Unit3Theworldonline板　　块：WelcometotheunitThoughtsonthedesign:本节课以说为主，通过“Welcometotheunit”部分所提供的四幅图片构成的海报，介绍了因特网及其用途。学生将学会谈论把世界连接起来的因特网，因特网所带来的好处和不利之处，以及因特网将来的用处。通过对该部分相关问题的讨论，帮助学生获得更多关于英特网的信息，为更深入学习本单元内容奠定基础。Teachingaims:1.Afterlearningthislesson,thestudentswillbeabletoknowmoreabouttheInternet,andtalkabouttheInternetanditsusesbymakingadebateontheeffectsoftheInternetonourlives;2.Afterlearningthislesson,thestudentswilldevelopspeakinganddiscussingskillsbytalkingaboutthefourpicturesandsharingideasinagroup;3.ThestudentswillhaveafluenttalkonthattheInternetconnectspeopleallovertheworldandthattheInternethasbothpositiveandnegativeaspects.Teachingprocedures:Step1Lead-in(PPT5-9)1.Talkaboutthecomputer.2.Learnabout“computerterms”.(1)Whichprogrammewouldyouliketowatchtonight?→Aprogramissomethingthatweusetocontroloroperateacomputer.(2)Themusicfromthekeyboardsoundslikemusicfromarealpiano.→Akeyboardisasetofkeysonacomputerthathelpyouoperatethecomputer.(3)Ihatetocleanwindows.→WindowsisakindofcomputerprogramdevelopedbyMicrosoft.(4)Memoryissomethingyoumaystarttolosewithage.→Memoryisaspaceintheharddriveofacomputertostoreinformation.(5)Juliewantstohaveapetmouse.→Mouseiswhatyoucontrolwithyourhandtomovethecursoronthecomputerscreen.[Explanation]生活、学习中我们常用电脑，学生已经掌握相当的电脑知识并了解因特网的作用，有丰富的背景知识，但用英文表达能力还欠缺。通过谈论电脑和学习电脑相关术语，能让学生更好地表达，从而顺利导入本课主题。Step2Brainstorming(PPT10-12)1.Doyouknowhowpeoplekeptintouchwitheachotherinthepast? (Peopleusedletters,postcards,telegraphs,faxesandtelephonestocommunicatebeforetheinventionoftheInternet.)2.Thenhowpeoplekeepintouchwitheachothernow?(WiththedevelopmentoftheInternet,moreandmorepeoplearenowusingcomputersandtheInternetforcommunication.)3.WhatareyourexperiencesusingtheInternet?4.WhatistheInternet?(TheInternet,alsocalledtheNet,isacollectionofcomputersconnectedinaworldwidenetwork.)5.WhatarethefunctionsoftheInternet?(Chatting,shopping,music,etc.)[Explanation]通过激活学生的大脑思维，学生在规定的时间内，尽可能多地将大脑中刚刚组织起来的话语与老师、同学交流。将集体回答、个体回答穿插在一起，每个问题的回答时间适中。学生在被激活的知识图式中搜索有关的素材，使它们像涓涓细流汇集起来，幸福、流畅、自由地向远方流淌。Step3Sharinginformation(PPT13-20)Discussthefourpicturesoftheposter“Aworldofconnections”.EncouragestudentstoexpresstheirunderstandingaboutthedifferentusagesoftheInternetandhaveagoodimaginationofwhattheInternetbringsusinthefuture.Nowworkinpairsandhaveadiscussionabouteachofthepictures.Picture11.Whatcanpeopledoonthiswebsite?(Searchforinformationonavarietyoftopics.)2.Whatdowecallthiskindofwebsitethatprovidessearchingservices?(Wecallitsearchengine.)3.HowcanyoufindinformationontheInternetusingasearchengine?(Enterkeywords.)4.Whatsearchenginesdoyouknoworoftenuse?Whichisyourfavouritesearchengine?(Google,Baidu.)Picture21.Whatdoyouthinkwouldbetheadvantagesofshoppingonline?(Asonlineshopkeepersdonothavetopayfortherentalofarealshop,theproductssoldonlineareusuallycheaperthanthoseinrealshops.Itiseasyandconveninenttocompareaproductinseveralonlineshops.Payingforthingsissimpleasyoujustkeyinthecreditcardnumberandconfirmthepaymentonline.Thedeliveryisusuallyquickandtheonlineshopsproividedeliverytoyourhome.Aboveall,shoppingonlinesavesalotoftime.)2.Whatdoyouthinkwouldbethedisadvantagesofonlineshopping?(Becausepeoplecanonlyseepicturesoftheproductsonline,sometimesyoucouldreceivesomethingthatwasnotwhatyoureallywanted.Thesafetyofthepaymentisnot100%guraranteedassomeonemaystealtheaccountnumbersorpinnumbers ofyourcreditcardsregisteredonline.Besides,somepeoplefalselyadvertiseproductsandthenstealcustomers’money.)Picture31.Haveyouevertriedtalkingwithyourparentsorfriendsonline?2.Whatdevicesdoyouneedifyouwanttotalkwithpeopleonline?(AcomputerconnectedtotheInterent,aweb-camera,aweb-microphoneandaweb-talikingsoftware…)3.Whatarethegoodpointsandbadpointsofonlinetalking?(Therearemanygoodpoints.Peoplecansavealotofmoneyinsteadofpayingforlong-distancecalls.Peoplecankeepintouchwithfamilymembersorfriendswhereveryouareintheworld.Peoplecanmakenewfriendsindifferentpartsoftheworld.Therearenegativethingstoo.Thequalityofthepicturesorvoicesdependsonthespeedofnetworktransfer.Manypeoletalkwithinlinefriendswithoutrealizingthattheirpicturescouldbeusedbyothersinillegalways.)4.Whichwayofcommunicationdoyouprefer,talkingfacetoface,talkingoverthephone,talkingonlineortalkingonlinewithaweb-camera?Why?Picture41.Haveyoutriedotheronlineservicesthatarenotmentionedhere?Whichones?2.Whatotheronlineservicesdoyouthinkwewillneedorhaveinthefuture?3.WhatroledoyouthinktheInternetwillplayinthefuture?4.Doyouthinkitisagoodideato‘live’ontheInternetcompletely?[Explanation]分享信息过程中，给学生一个想象和思考的时间和空间，集思广益，激活其头脑中各种相关的图式、概念、想法和印象等。每一幅画表达一个特定的话题，围绕这个话题，进行讨论。教师作为指导者，鼓励学生积极思考，创造性地思维，并以谈论与讨论的形式挖掘各种有用的信息和形成思路，然后在激活的想法中选择有意义的内容。对促进学生的自主学习，发展学生英语口语表达能力，起着积极的促进作用。Step4Discussion(PPT21-23)1.WhatdoyouthinkthemostimportantbenefitoftheInternetis?(FastspeedandeasyaccessarethemostimportantaspectsoftheInternet.)2.DoyouthinktheInternethasanynegativeaspectstoit?(Yes.Thereistoomuchinformationonlinethathasnotbeenproventobetrue.Therearetoomanyexcitingcomputergames,makingthosewhocan’tcontrolthemselveskilltime.)3.InwhatwayswilltheInternetimproveourlivesinthefuture?(TheInternetwillfreepeoplefromtheoffice.EverypartofahomecanbeconnectedtotheInternet,whichwillmakelifeeasierandmorecomfortable.)[Explanation]该部分以小组为单位（每组4名同学），同学之间的讨论可以促进他们的互帮互学，更好地激发学生表达的欲望，以提高他们的语言表达。 Step5Debate(PPT24)UsingtheInternetAdvantagesDisadvantages[Explanation]同学们已拥有用英语表达因特网的有利和不利的能力，此时分成两部分，进行辩论，增强学生的表达欲，展示他们的风采，培养其学习英语口头运用能力和成就感。Step6Homework(PPT25)1.WriteapassageaboutadvantagesanddisadvantagesofusingtheInternet.2.Previewthereading.[Explanation]课堂上充分的口语训练，课后配以书面训练，巩固学生所学知识，促进提升写的能力。