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1、Topic2.Thepopulati初中英语博爱科普2011课标版教课目标Learningaims1.Knowledgegoal(1)Goonlearningthepresentperfecttense.(2)Learnhowtoexpressbignumbers.(3)Drills:Itisincreasingby80millioneveryyear.thepopulationindevelopingcountriesislargerthanthatindevelopedcountries.2.MethodgoalLetthestudentspracticebignumbersinourda
2、ilylifeandmasterthem.3.EmotiongoalLetstudentscareaboutthelargepopulationofChina.Letthestudentsknowaboutthelargepopulationtobringbadresultstotheworld.2学情解析AnalysisofthestudentsThestudentshavelearnedEnglishformorethantwoyears.Theycanunderstandtheuseoftheperfecttense,andcanexpresssimplenumbersinEnglish
3、.ThestudentshavetakengreatinterestinEnglishnow.ItsnotdifficultforthemtomaserUnit1Topic2SectionB.要点难点Learningfocus.Talkaboutthepopulationindifferentcountriesinbignumbers.Learningdifficulties.(1)Talkaboutthepopulationindifferentcountries.(2)Howtoletstudentsexpressbignumbersfreely.教课过程4.1第一学时教课活动活动1【导入
4、】Step1WarmingupStep1.WarmingupShowsomepictureswithlargepopulationandmakesomedialogsbetweenstudentsandateacher.Forexample:Haveyoubeenthere?S1:No,Ihavnt.T:Wouldyouliketogothere?S1:No.T:Why?S1:Becausetherearetoomanypeople.Showsomepictureswithinourdailylifeersandmakesomedialogsbetweenstudentsandateacher
5、.T:HowdoyousayitinEnglish?S1:OnehundredandfiftyyuannumbWhataboutthisone?Thisone?Thisone?S4:.Thentheteacherask,“WhatsthepopulationofChina?”andleadintonewlesson.活动2【解说】Step2、3、4Step2Readingquestioned,independentinquisition1.Showlearningaims.2.Letthestudentsreadnumbersandfindtherules.andstudythefollowi
6、ng000,5.18fivepointoneeight100onehundred1,000onethousand1,000,000onemillion1,000,000,000onebillion1,000,000billionmillionthousand3.Listenandreadthenumbers,payingspecialattentiontotheintonation.543.8fivehundredandforty-threepointseven1562onethousand,fivehundredandsixty-two6004001sixmillion,fourthousa
7、ndandone7198764502sevenbillion,oneandninety-eightmillion,sevenhundredandsixty-fourthousand,fivehundredandtwo4.Listencarefullyandfindthequestionsstudentshundredthatdontunderstand.5.Listento1a,answer(1)Whatsthe(2)Whichcountrythefollowingquestions.populationoftheworld?hasthemostlargestpopulation?Step3M
8、ulti-dimensionalinteraction,cooperationinquiredinto1.Discussingroupstosolvetheproblemsthatstudentsdontunderstand.Discussingroupsandreadthefollowingnumbers.(1)973ninehundredandseventy-three(2)3980threethousand,ninehundredandeighty(3)98721ninety-eightthousand,sevenhundredandtwenty-one768540sevenhundre
9、dandsixty-eightthousand,fivehundredandforty(5)2346780twomillion,threehundredandforty-sixthousand,(6)82346dandsevenhundred580eighty-twoandmillion,eightythreehundreforty-sixthousand,fivehundredandeighty(7)405000000fourhundredandfivemillion(8)5555555555fivebillion,fivehundredandfifty-fivemillion,fivehu
10、ndredandfifty-fivethousand,fivehundredandfifty-five3.Listencarefullyandretellthedialogaccordingtothemessagesthataregiven.A:Whatalargepopulation!Theworldhas6.8billion.Anditis80millioneveryyear.B:WhichcountryA:?Chinahasthelargestpopulation.It1.3billion,andIndiaiswith.B:theUSA?A:309million.B:Itshowstha
11、tindevelopingcountriesthanindevelopedcountries.A:Theisgrowingfaster.B:Soitis.Thepopulationproblemindevelopingcountries.A:Chinacarriedoutontrolthepopulation.4.Listento1aandmatchtheinformation,andfinish1b.1.theworldA.309million2.Chinabillion3.Indiabillion4.theUSAbillion5.Discussingroups,read1aandfilli
12、ntheblanks.Theworldhasapopulationof6.8billionanditisincreasingby_everyyear._hasthelargestpopulation.Ithasalreadyreached_andIndiais_with1.1billion.Thepopulationindevelopingcountriesis_andisgrowing_thanthatindevelopedcountries.Luckily,ourcountryhascarriedoutthe_policytocontrolthepopulation.6.Workingro
13、upsanddiscussthepopulationoftheworld.Withthehelpofchartandquestions.(1).Whichofthese5countrieshasthelargest/smallestpopulation?Whatsthepopulationofit?(2).Whatcanyoutellfromthepopulationindevelopingcountriesandindevelopedcountries?(3).Whatproblemsdoesthelargepopulationcause?(4).Whatmeasuresdoyouthink
14、shouldbetakentocontrolthepopulation?Step4Migrationapplication,developmentinquiredintoDoasocialactivity.DividestudentsintoseveralgroupsandmakeasurveyofthepopulationaboutChina/India/theUSA/Canada/Russia.Drawadiagram.Makesimilarconversationsaftertheexample.Forexample:A:Whatsthepopulationoftheworld?B:It
15、sabout6.8billion.活动3【练习】Step5Trainingexamination,goalinquisitionChoosethebestanswer.1._isthepopulationofRussia?143million.2.Thereare_studentsinourofschool.C.threethousandOfD.three3.Jennythousandalwayshelpsothers._.sheD.Soshedoes4.ThepopulationofChinais_thanthatofJapan.A.largerB.moreC.fewerD.Less5.Th
16、epopulationofShanghaithan_Jinan.Aislarger,thatinBarelarger,thatofCislarger,thatofDarelarger,thatin6.ThepopulationofJapanis_thanthatofIndia.AlessBfewerCmoreDsmallerClassroomsubtotalInthisclasswehavelearnedthepresentperfecttense/howtobignumbersinEnglishanddrills:(1)Itisincreasingby80millionyear.(2).thepopulationindevelopingcountriesislargerthandevelopedcountries.Itsnecessaryforstudentstocareabouttheworldsgrowingpopulation.expresseverythatinBlackboardwritingdesignItisincreasingby80millionever
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