九年级英语Unit1Topic2SectionB仁爱版

1、UnitlTopic2SectionBThemainactivitiesare1aand3.本课重点活动是1a和3。I.Teachingaimsanddemands教学目标1 .Mastersomenewwordsandusefulexpressions:increase,rise,medical,medicalcare2 .Goonlearningthepresentperfect:（1） Thepopulationhasincreasedalot.（2） Chinesemedicalcarehasimprovedbecauseourcountryhasdevelopedalot.（3） e

2、arnhowtoreadthenumbers.n.Teachingaids教具录音机/多媒体课件/幻灯片/小黑板m.Five-fingerTeachingPlan五指教学方案Step1Review第一步复习（时间:14分钟）1.检查上节课教师布置的探究性作业，组织学生互评，教师选出若干份点评。）T:S1,youdidwell.S2,excellent2.（英语老师转换角色，当一次地理老师。）T:TodayImnotyourEnglishteacher.Imyourgeographyteacher.IbelievewewillbehappyintheEnglish-geographyclass.

3、InthislessonwewilllearnsomethingaboutthepopulationofChina.WeknowChinahasthelargestpopulationintheworld（多媒体展示中国部分城市人口过多现象以及人口普查图表。）.In2005,Chinaspopulationwas1.3billion.（板书）1.3billion:onepointthreebillion（教师冉板书两组小数，教会学生怎样去读。）5.68:fivepointsixeight14.05:fourteenpointofive（小数点后的“零”可读作“o”，也可读作“zero”。）T:

4、Letsreadthenumbersbelow.Trytoreadthemquicklyandcorrectly.（教师迅速在黑板上写出几组数字，用后擦去。）0.08billion9.17miles258.00452.73meters10.78million（学生会积极去读出这些数字，可让小组进行，然后个别提问。）53: zero（naught）pointzero（naught）eightbillion54: ninepointonesevenmiles55: twohundredandfifty-eightyuan56: fourhundredandfifty-twopointseventh

5、reemeters57: tenpointseveneightmillionT:OK.Youdidverywell.Doyouknowwhatthepopulationwasin1985?（有的同学可能知道，有的同学可能不知道，但大家可能会纷纷做出猜测。）58: Onepointonebillion.59: Onepointtwo.billion.T:Stophere.Youranswersarenearlyright.ThepopulationofChinain1985was1.06billion.WhyhasthepopulationofChinaincreasedsoquickly?Be

6、causethelifespanhasrisen.（板书rise及其过去式和过去分词。）riseroserisenT:“Rise”means“increasequickly”.Whyhasthelifespanrisen?Letmetellyou.Chinesemedicalcarehasimprovedbecauseourcountryseconomyhasdevelopedalot.（板书）medicalcaredevelopT:Heresadiagramaboutthelifespan.Pleaselookatitcarefullyandtalkaboutit.（教师用小黑板或幻灯片呈现

7、下面的表格。）（学生们看到表格，可能会想起老师刚才讲过的内容，鼓励他们去表达自己的想法，可以让同学小组讨论。）T:Whoisvoluntarytodescribethediagram?Dontbeafraidofmakingmistakes.（学生可能会做出下面的回答。）510: Thelifespanhasrisenquickly.511: Thelifespanin1930wasonlyabout25.512: Thelifespanin1949wasabout35.513: Thelifespanin1981wasabout69.514: Thelifespanin1999wasabou

8、t25.T:Youdidagoodjob.Butwhy?Whocangivemethereasons?Youcanusethenewwordswestudiedjustnow.（学生可能会回答。）515: Thelivingconditionsaregoodenough.516: Chinaseconomyhasgrownalot.（弓I导学生把grown换成developed0）T:Yes.Youcanchange“grown”into“developed”.（学生重复。）517: Chinaseconomyhasdevelopedalot.518: Chinesemedicalcareha

9、simproved.T:Excellent.DoyouknowthepopulationofChinaisoverone-fifthoftheworld?（板书）One-fifth:1/52:a（one）half1/4:a（one）fourth或a（one）quarter3/4:three-fourths（或threequarters）7/8:seveneighths（用小黑板或幻灯片展示上面图片，让学生充分感知分数表达法，教师领读（接下来可采取竞赛形式检查学生的掌握情况。）（方案一）：小组竞赛（使用幻灯片/多媒体/小黑板展示几组数字，在规定时间内看哪组学生读的数量多，正确率高。得分较高的为胜

10、。）1/23/42/56/71/65/911/121/45/62/151/2011/769/113/8（本组分数只供参考，为了公平，教师可多准备几组数字呈现给大家。）（方案二）：个人竞赛（要求学生回答问题要简洁，明快。找两个同学当裁判，学生们以开火车形式进行比较，在规定时间内看哪个同学读的既快又准。读的最多、最准确者为胜。）（教师加以总结。）T:Welldone.G1isthebest（或）S19isthebestStep2Presentation第二步呈现（时间:4分钟）（让学生听听力，填表。）T:Wehaveknownalotaboutthepopulationandthelifespan

11、.Nowpleaselistentothetapein1aandcompletethechartbelow.YearThepopulationofChina19852005（用幻灯片/多媒体/小黑板将表格展示给学生。）（如果学生一次不能完成，可听第二遍。）Step3Consolidation第三步巩固（时间：10分钟）（阅读，填表。）T:Pleaseread1aagainandcompletethechart.（学生可直接利用书中表格，也可以用其他方式呈现。）YearThelifespanofChinesepeople1930194919811999（本表格很简单，找同学核对一下答案，对表现好

12、的提出表扬。）T:Pleaseread1acarefullyandthenperformit.（给学生几分钟时间准备，教师在黑板上写出关键词句。）（建议使用方案：采取评比方式，评出最佳老师及最佳学生。每次选出一个同学表演地理老师的角色，其他同学作为他/她的学生。几组表演之后，让大家推举出最佳老师及最佳同学。）T:Great.Ithinkyoualldidwell.Whodoyouthinkisthebestteacherandwhodoyouthinkisthebeststudent?Ss:S1isT1is.T:OK.Everyonethinksisthebestteacher.isthebe

13、ststudent.Congratulationstothem.Step4Practice第四步练习（时间：12分钟）1 .T:Lookatthepicturesof2anddescribeit.（让学生通过自己的猜测，用所学过的语言知识把图片描述一下。教师可以先提问程度稍差的同学，目的是复习较大数字的读法并把新旧知识结合起来。）S1:Picture6Thejacketcosts326.00.S2:Picture2Its6575milesawayfromBeijingtoToronto.53: Picture1Themountainis8844.43metershigh.54: Picture

14、5ThepopulationofChinais1.3billion.55: Picture4IthinkthepopulationofAnhuiProvinceis59.9million.56: Picture3Theanimallived210millionyearsago.T：Yeah,verygood.Youaregreat.Nowletslistentothetapeof2andnumberthepicturesyouhear.T:OK,letscheckyouranswers.（教师核对答案。）2.T:Letsplayanumbergame.Iwillshowyousomenumbe

15、rs.Readthemquicklyandcorrectlyingroups.Thegroupthatcanreadthemostquicklyandthemostnumbersisthewinner.（教师在幻灯片上呈现几组数字，学生以小组为单位进行抢答，两位同学做记分员,读的最多最快、最准确的为胜者。）1/38.758.4592819.99billion5/87/968.9million789.7341.06billion8881/4105774.91billion18.95（类似这样的数字至少要准备三组。）（教师在黑板上画出计分表。）G1G2G3G4（让学生统计得分，自主地构建形成性评价

16、机制。）T:OK.GigetsG2getsGagetsG4getssoisthewinner.Congratulations.3.T:NowIthinkyoucanreadthenumbersquickly.Letslookatthepopulationgraphof2005,thenpracticedialogswithyourpartnersaccordingtotheexample.（教师用幻灯片或多媒体课件呈现教材3的图表。）Forexample:57: Whatsthepopulationoftheworld/China/India？58: Theworld/China/Indiah

17、asapopulationof/Thepopulationoftheworld/China/Indiais.（同学们充分练习后，让几组同学做示范。）G1:G2:G3:Step5Project第五步综合探究活动（时间:5分钟）1.T:ThepopulationproblemisthebiggestoneinChina.Nowletsdiscussthequestion:WhataretheproblemsofChinaspopulation?（学生小组讨论。）T:Whocantalkaboutit?（学生可能要说的很多，但有些语言他们表达不清楚,教师加以引导，尽量用简洁的语言表达清楚。）51: Thepopulationisstillrising.52: Thepeopleinthecountrysidecantobeytheone-childpolicy.53: Therearemoreandmoreoldpeopleinsomebigcities.T:Verygood.ButwhatdoyouthinkofthefutureofChinaspopulation?Pleasediscussit.（鼓励学生不用举手，自觉站起来表达自己的观点。）54: ThepopulationofChinawillbe1.5billionin2050.5