2010年秋季仁爱英语教学案例设计(教案)九年级上册(unit 4 topic 2 section b)

仁爱英语教案UNIT4AMAZINGSCIENCETOPIC2WHENWASITINVENTEDSECTIONBTHEMAINACTIVITIESARE1AAND3A本课重点活动是1A和3A。TEACHINGAIMSANDDEMANDS教学目标1LEARNSOMENEWWORDSCLONE,EXPERIMENT2GOONLEARNINGTHESIMPLEPASTPASSIVEVOICE1DOYOUKNOWWHENITWASINVENTED2ITWASINVENTEDIN18793LEARNSOMEINFORMATIONABOUTTHECLONETECHNOLOGY1CLONINGISFAMOUSTHROUGHOUTTHEWORLD2THEREISDNAINMOSTLIVINGTHINGS,INCLUDINGHUMANBEINGS3NODOUBTCLONINGCANHELPSAVETHOSEANIMALSINDANGER4ANDITCANALSOBENEFITHUMANBEINGSTEACHINGAIDS教具录音机/多媒体课件/图片FIVEFINGERTEACHINGPLAN五指教学方案STEP1REVIEW第一步复习时间6分钟做游戏，复习一般过去时被动语态的用法，导入新课。1用上节课的作业做一个链式游戏，以小组为单位，就计算机、MP3、CD、手机、数码相机或学习用具等进行对话，操练BEMADEOF/BEMADEIN/BEMADEFROM/BEUSEDFOR的用法。让每一小组的第一个同学回过头去问下一位同学，依次接着往下问。TBOYSANDGIRLSLETSPLAYAGAMEASKQUESTIONSONEBYONES1WHATSYOURFAVORITEINVENTIONS2THEMP3WHATSITMADEOFS3ITSMADEOFSTEELANDPLASTICWHENWASITDEVELOPEDS4ITWASDEVELOPEDAROUND1998WHATSITUSEDFORS5ITSUSEDFORHELPINGUSTOIMPROVEOURENGLISH2用多媒体出示图片，导入新课。TYOUDIDVERYWELLTHEREAREMANYIMPORTANTTECHNOLOGIESANDINVENTIONSINTHEWORLDTODAYLOOKATTHISINVENTION展示灯泡图片。ITSABULBDOYOUKNOWABOUTIT板书并要求学生了解。BULBSSYES,ALITTLETOK,WHOINVENTEDITSSTHOMASEDISONTWHENWASTHELIGHTBULBINVENTEDDOYOUKNOWSSNOTOK,LETSCOMETO1AANDLEARNABOUTITSTEP2PRESENTATION第二步呈现时间17分钟通过谈论各种发明及其发明者和发明的时间，呈现1A和3A的内容，继续学习一般过去时的被动语态及生词。1让学生听1A录音并根据听力内容判断正误。TINTHISLESSON,WEWILLLEARNSOMETHINGABOUTOTHERINVENTIONSANDTECHNOLOGIES,PLEASELISTENTO1AANDMARKTRUETORFALSEF1THELIGHTBULBWASINVENTEDIN18792THERADIOWASINVENTEDBYTHOMASEDISONIN18953THEAIRPLANEWASINVENTEDBYWILBURANDORVILLEWRIGHTIN1903听后核对答案1T2F3T。2用图片继续谈论上述发明，引入3A。TNOWLETSGOONTALKINGABOUTTHEINVENTIONSLOOKATTHEPICTURE出示收音机的图片。WHOINVENTEDITTITWASINVENTEDBYGUGLIELMOMARCONI呈现收音机的发明年份和发明者的名字。TANDWHENWASITINVENTEDSSITWASINVENTEDIN1895TVERYGOODANDLOOKATTHISPICTURE展示一幅飞机的图片。WHOINVENTEDIT同时呈现飞机发明年份和发明者的名字。SSITWASINVENTEDBYWILBURANDORVILLEWRIGHTTANDWHENWASITINVENTEDSSITWASINVENTEDIN1903TWEHAVETALKEDABOUTSOMANYINVENTIONSNOWWEAREGOINGTOLEARNSOMETHINGNEWABOUTAGREATTECHNOLOGY拿出图片。NOWLOOKATTHISPICTUREWHATANIMALISITSSITSASHEEPTYES,ITISACLONEDSHEEPHAVEYOUEVERHEARDOFCLONE教师释义并领读CLONE，要求学生掌握。CLONESSYES,OFCOURSETTHATSVERYGOODCLONINGISAFAMOUSEXPERIMENTTHROUGHOUTTHEWORLDSOFAR,SCIENTISTSHAVECLONEDMANYANIMALSTOSAVETHOSEANIMALSINDANGERTHECLONINGTECHNOLOGYHASBEENUSEDINHUMANORGANSITCANBENEFITHUMANBEINGS板书并让学生掌握生词EXPERIMENT；了解ORGAN和BENEFIT。EXPERIMENT,ORGAN,BENEFITTTHENWHATSTHENAMEOFTHEFIRSTCLONEDSHEEPSSDOLLYTYES,NOWLETSREAD3AANDANSWERTHEFOLLOWINGQUESTIONS3指导学生阅读3A，回答下列问题并核对答案，为完成3B作铺垫。同时画出文中的关键词及短语，为下一环节的课文复述作准备。板书下列问题。1WHENANDWHEREWASTHECLONEDSHEEPCREATED2WHATOTHERTHINGSHASMANCLONED3WHATSUSEDINCLONING4WHATARETHEADVANTAGESANDDISADVANTAGESOFCLONING板书关键词及短语。要求学生理解AIDS。DOLLY,BECREATED,FAMOUSTHROUGHOUTTHEWORLD,DNA,INEVERYPARTOFYOURBODY,BESIMILARTO,SAVE,BENEFITHUMANBEINGS,EXPLOREMOREWAYSTO,HEARTDISEASE,AIDSANDCANCER,HOWEVER4让学生听3A并跟读，画出重点词组，教师板书。TPLEASELISTENTO3AANDREADAFTERITFINDOUTTHEIMPORTANTPHRASES板书，要求学生掌握。SOFAR,BESIMILARTO,THESAMEAS,NODOUBT学生听完录音后，与教师板书的内容对照，并朗读3A课文，教师讲解本课重要词组。STEP3CONSOLIDATION第三步巩固时间9分钟通过角色表演、复述等形式巩固1A和3A内容及一般过去时的被动语态。1两人一组分角色表演1A。TPLEASEACTOUT1AINROLES2再读1A，完成1B。3让学生再读3A并讨论3B中的问题，完成3B。4指导学生用刚才自己所画的3A中的关键词，以接龙的方式复述3A。TJUSTNOW,WEVELEARNEDSOMETHINGABOUTCLONINGCANYOUSAYSOMETHINGABOUTITS1DOLLY,ACLONEDSHEEPTYEAHITSWELLKNOWNS2CLONINGISKNOWNASAGREATEXPERIMENTALLOVERTHEWORLDTGOODS3DOLLYWASCREATEDINSCOTLANDMORETHANTENYEARSAGOS4SOFAR,SCIENTISTSHAVECLONEDRABBITS,SHEEP,COWS,MICE,PIGSANDSOMEOTHERANIMALSTEXCELLENTNOW,REPEATWHATYOUHAVESAIDJUSTNOWONEBYONE,ANDYOUWILLGETTHEWHOLEPARAGRAPH让刚才抢答问题的学生重复一遍自己所说的那些话，教师不再提示关键词，让学生按同样的方式继续进行接龙。为激发学生的兴趣，可分组竞赛，看哪组复述的句子又快，又多，又准确。STEP4PRACTICE第四步练习时间8分钟设置情景，继续操练一般过去时的被动语态，完成2和4。1利用1A中有关发明的图片，让学生用一般过去时的被动语态讲述三项发明的情况。TNOW,LOOKATTHEPICTURESANDTRYTOSAYSOMETHINGABOUTTHEINVENTIONSWEHAVELEARNEDJUSTNOW教师逐一呈现图片。S1THELIGHTBULBWASINVENTEDBYTHOMASEDISONIN1879S2THERADIOWASINVENTEDBYGUGLIELMOMARCONIIN1895S3THEAIRPLANEWASINVENTEDBYWILBURANDORVILLEWRIGHTIN19032让学生先看2的内容，然后播放录音。TBOYSANDGIRLS,DOYOUWANTTOKNOWSOMETHINGABOUTOTHERINVENTIONSLETSLISTENTOTHETAPECAREFULLYANDCOMPLETE2ONPAGE87听后检查部分学生答案，视情况需要，可再播放一遍录音。然后就听力内容提问，鼓励并引导学生积极踊跃回答。TWHOWASTHECARINVENTEDBYS4KARLBENZTWHENWASITINVENTEDS4INTWHATABOUTTHETELEPHONES5ITWASINVENTEDBYALEXANDERGRAHAMBELLINTWHATDIDJOHNBAIRDINVENTS6HEINVENTEDTHETELEVISIONTWHENDIDHEINVENTITS6HEINVENTEDITIN让学生分成三组分别讨论这三项发明，并用自己的话复述2中的部分内容，完成2。TNOW,PLEASETALKABOUTTHEINVENTIONSINYOUROWNWORDSGROUP1,PLEASETELLUSSOMETHINGABOUTTHECARG1THECARTNOW,GROUP2,WOULDYOULIKETOTALKABOUTTHETELEPHONEORTHETELEVISIONG2WEDLIKETOTALKABOUTTGROUP3ITSYOURTURNTOTALKABOUT3用多媒体展示一些图片，并要求学生用过去时的被动语态造句。巩固本课的语言点。完成4。TMAKEUPSENTENCESACCORDINGTOTHEEXAMPLEANDPRACTICEMOREEXAMPLE展示电脑图片并板书生词LAPTOP，要求学生了解。LAPTOPS4WHEREWERELAPTOPSINVENTEDS5THEYWEREINVENTEDINJAPANS4WHENWERETHEYINVENTEDS5THEYWEREINVENTEDIN1985展示神舟七号发射图。SSSHENZHOUWASLAUNCHEDINTOSPACEINCHINAIN2008STEP5PROJECT第五步综合探究活动时间5分钟把学生分为几组，每个学生写下自己所知道的发明，由组长汇总，然后小组讨论，让学生课后发挥各自的想象力，设计一个实用的发明并介绍其用途、性能等，培养学生的探究能力。1组内调查后，让学生尽量用一般过去时的被动语态来描述搜集的发明及其发明者、发明时间、发明地、用途等，并由组长向全班作汇报。2HOMEWORKACCORDINGTOYOURIMAGINATION,DESIGNYOUROW