九年级英语上册 unit 4 topic 2 when was it developed section b教案 仁爱版

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1、九年级上仁爱版英语Unit4Topic2WhenwasitdevelopedSectionB教案Themainactivitiesare1aand3a.本课重点活动是1a和3a。Ⅰ.Teachingaimsanddemands教学目标1.Learnsomenewwords:clone,experiment2.Goonlearningthesimplepastpassivevoice:(1)Whenwasitinvented?(2)Itwasinventedin1879.3.Learnsomeinformation

2、abouttheclonetechnology.Ⅱ.Teachingaids教具录音机/多媒体课件或图片Ⅲ.Five-fingerTeachingPlan五指教学方案Step1Review第一步复习(时间:13分钟)1.(做一个链式游戏，以小组为单位，就上一节课学过的计算机、MP3、CD、手机、数码相机或学习用具等进行对话，用bemadeof/bemadein/bedevelopedfrom/beusedfor进行操练。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。)T:Boysandgirls.L

3、et’splayagame.Askquestionsonebyone.S1:HowdoyousayitinEnglish?(出示钢笔)S2:Apen.S2:What’sitmadeof?S3:It’smadeofsteelandplastic.S3:Whenwasitdeveloped?S4:Itwasdevelopedin2006.S4:What’situsedfor?S5:It’susedforwritingwith.T:Doyouunderstand?Ss:Yes.T:OK.Let’sbegin.2.(出示

4、图片，导入新课。)T:Youdidverywell.Therearemanyimportanttechnologiesandinventionsintheworldtoday.Lookathere.(展示灯泡图形。)It’salightbulb.(板书lightbulb。)Doyouknowaboutit?Ss:Yes,alittle.T:OK,whoinventedit?Ss:ThomasEdison.T:Whenwasthelightbulbinvented?Doyouknow?Ss:No.T:Itwasin

5、ventedin1879.OK,let’sbeginournewlesson.Wewilllearnsomethingmoreaboutothertechnologiesandinventions.Andlookatthispicture.(出示收音机的图片。)Whoinventedtheradio?Doyouknow?Ss:Sorry,wedon’tknow.T:ItwasinventedbyGuglielmoMarconi.(展示图片的发明者的名字和年份。)T:Andwhenwasitinvented?Ss:

6、Itwasinventedin1895.T:Verygood.Andlookatthispicture.(展示一幅飞机的图片。)Whoinventedit?(同时展出图片的发明者和年份。)Ss:ItwasinventedbyWilburandOrvilleWright.T:Andwhenwasitinvented?Ss:Itwasinventedin1903.3.T:Wehavetalkedaboutsomanyinventions,buthaveyoueverheardofclone?(教师释义并领读clone

7、。)cloneSs:Yes,ofcourse.T:That’sverygood.Sowhat’sthenameofthefirstclonedsheep?Ss:Dolly.T:Whenandwherewasitcreated?Ss:ItwascreatedinScotlandafewyearsago.T:Whatisusedincloning?Ss:DNA.T:Whatotherthingshasmancloned?Ss:Rabbits,cows,mice,pigsandsomeotheranimals.Step

8、2Presentation第二步呈现(时间:10分钟)1.(播放1a录音，学生跟读，让学生填好表格。完成1b。)InventionInventorYearLightbulbGuglielmoMarconi1903(由两个学生到黑板上把表格填好，教师核对答案。)2.(指导学生阅读3a，板书文中的关键词和短语，为下一环节的课文复述作准备。)T:Wehavetalkedabou