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2019-2020年高中英语Module5ALessoninaLab(第二课时)教案外研版必修1
一、教学目标
1.知识与技能熟练掌握Englishnumbers,alittleabitalotrathernoanyverymuchlots
2.态度与方法HelpthestudentstoreadandwritesomeEnglishnumberscorrectly.Helpthestudentsfindthemainpartsofanexperimentwhiletheyarelistening.
3.情感态度与价值观Helpthestudentsknowtherulesofexpressingnumbers.Helpthestudentsguessthemainpartsofalisteningmaterialfromthetips.
二、Teachingimportantpoints教学重点LetthestudentspayattentiontothekeywordsinthematerialsaboutAimEquipmentMethodResultandConclusion.
三、Teachingdifficultpoints教学难点HelpthestudentsreadsomelargeEnglishnumbers.
四、Teachingmethods教学方法Listeninganddiscussion.
五、Teachingaids教具准备Aprojectorandarecorder.
六、Teachingproceduresways教学过程与方式StepⅠRevisionCheckthestudents’homework.ForExercises6and7givethemanswersheet.ForExercise8ask10studentstoreadoutthepletesentencesonebyone.Theyshouldpayattentiontotheirpronunciationandintonation.StepⅡListeningandWritingThisisacontinuedparttothereadingmaterial.Thestudentscangetmorefamiliarwithsomenewwordsandexpressionsandalsogetfamiliarwiththedescriptionofanexperiment.AskthestudentstoscanthethreeactivitiesinLISTENINGANDWRITINGonP46sothattheyknowwhattheyaregoingtodoandtrytogetreadytocatchthekeywordsorkeysentenceswhentheyarelistening.T:Nowpleaseturntopage
46.Wearegoingtohavealistening.Atfirstscanthethreeinstructionstoknowwhatyouaregoingtodo.Severalminuteslater.T:DoyouknowwhatyouaregoingtodoSs:Yes.T:What’sthefirstoneS1:ToreadtheAimbelowandpredicttheResult.T:WhatisyourpredictionS1:Ithinktherearetworesults.Oneisthatthemagnesiumisheavierthanbefore.Theotheristhatitbeesalittlelighterthanbefore.It’sdifficulttogetaresultunlesswemakeanexperiment.T:Goodthisisacorrectattitudetowardsscience.Nowwe’lllistentotheconversationtofindtheresult.Sopleaselistencarefullyandwritedownthekeywords.Playtherecorderforthestudentstohaveafirstlistening.Afterthatletthestudentswritedowntheiranswersusingthekeywords.Ifpossibleaskthemtowritethewholesentences.T:Nowlet’slistenandpletethedescriptionofthescientificexperiment.We’veknowntheAimandResult.WhatweshouldfocusonisApparatusMethodandConclusion.AndforMethodweshouldpayattentiontothefunctionwords:firstthennextafterthatandlastly.DoyourememberSs:Yes.T:OKlet’slistenagain.Playthetaperecorderagain.Thestudentslistentotherecorderandpletetheirsentences.Atlastcollecttheanswers.StepⅢListeningandSpeakingP95Thisisanotherexperimentforthestudentstohavealistening.Thepurposeofthelisteningisthesameastheaboveone.AskthestudentstoreadtheexercisesbeforelisteningincludingExercises1314and15sothattheyknowclearlywhattheyaregoingtodo.T:Nowwe’llhaveanotherlistening.AreyouclearaboutwhatyouaregoingtodoSs:Yes.T:OKforExercise13wehavetodecidewhattheaimoftheexperimentis.Andthendecidethecorrectorderofthestages.Sofirstlookatthepicturesworkinpairstodescribewhattheboyisdoing.Letthestudentsdothejobandthencollecttheirdescriptions.T:WelljustnowIcollectedsomeofyourdescriptionsaboutwhattheboyisdoing.Lookatthesentencesonthescreen.Writethefollowingsentencesonthescreen.aBobiswritingaconclusion.bHeissqueezingalemon.cHeisgoingtofirethepaper.dThisistheaimoftheexperiment.eHejustlightedacandle.fHeisgoingtowritesomethingonthepaper.gHeisblowingthepaper.T:Allofthesedescriptionsareverygood.Nowlet’slistentothetapetofindtheaimandputthestagesinthecorrectorder.Afterthestudentsfinishthetaskchecktheiranswerswiththewholeclassbylisteningtothematerialagain.T:Wellit’stimeforustohaveaspeaking.LookatExercise
15.Takeitinturnstodescribetheexperiment.Usethesewordsandphrasesinthebox.Givethestudentssometimetodothejob.Andthenaskoneortwoofthemtoreadouttheirdescriptions.Teachercanalsoleavethispartashomework.StepⅣVocabularyandSpeakingInthisparthelpthestudentsmastertherulesofreadingEnglishnumbers.Thereare3tasksinthisstep:Task1Activity1;Task2Activity2;Task3Activities3and
4.Task1:Activity1T:Todaywe’lllearnhowtoreadsomeEnglishnumbers.PleaselookatScreen1PartA.Therearesomenumbersonit.Findtherulesandthenworkinpairstoreadthemcorrectly.Screen1:A2202002000200002000002000000200000002000000002000000000B1221231234123451234561234567123456781234567891234567890Severalminuteslater.T:DoyoufindtherulesofthesenumbersS1:Itseemsthatthreezerosareusedasaunit.T:Right.Howdoyouread20000S1:Twentythousand.T:Howabout200000S1:Twohundredthousand.T:Howabout2000000S1:Twothousandthousand.T:I’mafraidyouarewrong.Itshouldbetwomillion.S1:SorryIforgetit.T:OKhowabout20000000S2:It’stwentymillion.T:Right.Howabout200000000S3:That’stwohundredmillion.T:Whatabout2000000000S4:Thatistwothousandmillion.T:Right.ThisisthewaythatEnglishnumbersareread.Americanwouldliketoreadlikethis:twobillion.Youdidverywell.Sitdownplease.Nowlet’slookatthescreen.HereisthewayswereadEnglishnumbers.Pleasepayattentiontotheboldface.That’stheunitofthenumbers.Screen2:200Twohundred2000Twothousand20000Twentythousand200000Twohundredthousand2000000Twomillion20000000Twentymillion200000000Twohundredmillion2000000000TwothousandmillionortwobillionLetthestudentsreadthenumbersonScreen2andthenreadnumbersinPartBinScreen
1.Letthemworkinpairstodothejobandthenaskthemtoreadthenumbersoutindividually.S:...T:Nowlet’slookatScreen
3.Thesearethewayswereadandwritethenumbers.Screen3:22Twenty-two123Onehundredandtwenty-three1234Onethousandtwohundredandthirty-four12345Twelvethousandthreehundredandfifty-five123456Onehundredandtwenty-threethou-sandfourhundredandfifty-six1234567Onemilliontwohundredandthirty-fourthousandfivehundredandsixty-seven12345678Twelvemillionthreehundredandforty-fivethousandsixhundredandseventy-eight123456789Onehundredandtwenty-threemil-lionfourhundredandfifty-sixthousandsevenhundredandeighty-nine1234567890Onebilliontwohundredandthirty-fourmillionfivehundredandsixty-seventhousandeighthundredandninetyTocheckwhetherthestudentshavemasteredthewayofreadingEnglishnumbersletthemlookatthenumbersinActivity
1.Therearetwomistakes.Letthestudentsreadthenumbersandfindthemistakes.T:NowtherearesomenumbersinActivity1onpage
42.Therearetwomistakesinthem.Readthenumbersandthenfindthemistakes.AfterthatI’llasksomeofyoutotellthemistakes.Later.T:WhatarethemistakesS1:OneisinNumber
1.Theword“thousand”ismissingafter“fourhundredandseventy”.TheotherisinNumber
2.Theword“one”or“a”ismissingbefore“hundredmillion”.T:Quiteright.That’sallforActivity
1.Task2:Activity2Nowlet’sturntoActivity
2.Lookatthefractionsandthewayofsayingthem.What’stheruleS1:Theupperonesarecardinalnumbersandtheloweronesareordinalnumbers.T:Right.WhendoweusepluralformsS2:Whentheupperoneismorethanone.T:Right.Butthewayyouaresayingisveryinteresting.InEnglishwhatyoucall“upperone”iscallednumeratorofafraction;whilethe“lowerone”iscalleddenominator.Nowlet’sreadthesefractionsinEnglish:2/55/89/103/85/
6.Studentsreadthefractions.Task3:Activities3and4T:Nowlet’slookatActivity
3.DescribethefractionsinActivity2aspercentages.Askthestudentstoworkinpairstoparetheiranswers.Andthencollecttheanswersfromtheclass.T:NowlookatActivity
4.Readthesequestionsaloudandsaytheanswers.Workinpairstotaketurnsaskingandansweringthequestions.Givethemsomehelpifsomeofthemhaveanytroubleindoingthis.Afterawhilechecktheanswerswiththewholeclass.IftimepermitsfinishActivity
5.Ifnotleaveitashomework.StepⅤHomeworkT:InthisclasswelistenedtotwomaterialsandlearnedtoreadsomenumbersinEnglish.It’shardbutyouhavemasteredallofthem.Youareterrific!Nowpayattentiontoourhomework:OneistopreviewVocabularyonpage46;TheotheristofinishExercise9onpage93andExercise15onpage
95.ForExercise15you’dbetterwritethemdownsothatwecanshowthemoutonthescreen.NexttimeI’llcheckyouranswerstotheseexercises.OKclassisoverseeyoutomorrow.Ss:Seeyou.
七、板书设计StepⅠRevisionStepⅡListeningandWritingStepⅢListeningandSpeakingP95StepⅣVocabularyandSpeaking
八、教学反思整节课过度自然,各环节环环相扣教学内容也是难易得体,既照顾到了后进生,也满足了尖子生对新知识的渴求,尤其是一些特殊比较级句型和放在比较级前程度副词的拓展,使得学生对比较级的用法有了一个宏观的认识。