初二下册英语冀教版教案第四单元

Lesson25:Let’sDoanExperimentTeachingContent:Masterywordsandexpressions:science,experiment,fill,proveOralwordsandexpressions:theory,jar,upside,observe,right,sideup,upsidedownTeachingAims:1.

UsetheSimplePresentTense.2.

ExpresscertaintyanduncertaintyTeachingImportantPoints:1.

Learntoexpresssequence;2.

Howtoexpressanexperiment.TeachingDifficultPoints:ExpresscertaintyanduncertaintyTeachingPreparation:jar,cardboard,waterTeachingAids:audiotape,flashcards,jar,cardboard,waterTypeoflesson:newlessonTeachingProcedure:Step1.Teacherbringsthejar,cardboardandwatertotheclass.Showthemtothestudentsandaskwhatexperimentswecandowiththem.Letthestudentsshowthemandexplainthereasonstothestudents.Letthestudentsworkingroupsanddiscusstheexperiments.Whenonegroupisdoingtheexperiments,theotherscanaskthequestions.Theteachercanaskquestions,too.Step2.Nowletthestudentsopentheirbooksandguesswhattheexperimentis.AskthestudentstosayitinEnglish.Step3.Readthetextsilentlyandanswersthefollowingquestions.1.

What’satheory2.

What’sanexperimentfor3.

DidDannyreadabouttheexperimentWhatisitabout4.

DoyouthinkthecardboardcanholdthewaterinthejarWhyStep4.Readthetextcarefullyandchecktheanswers.Explainsomewordsandexpressionstotheclass.Step5.Listentothetapeandrepeatafteritlinebyline.Canthestudents’listeninggoodenoughtohearclearlyStep6.Cometo“Let’sDoIt.”Dividetheclassintotwogroups.Onegroupthinksthefloorwillgetwet.Theothersthinkitwon’t.Letthemdiscussinclass.Payattentiontotellingthereasons.Step7.Homework1.

Reviewthenextlesson.2.

Finishofftheactivitybook.

Summary:Theexperimentisthemainpartofthetext.Ifwehavetime,doitintheclass.Thenaskthemtodescribewhattheysee.Giveareporttotheclass.Ifthetimeinclassisn’tenough,letthestudentsdotheexperimentafterclass.Thenreporttheresulttotheclass.Theteachercandotheexperimentforthestudents,too.

Lesson26:OneWetDannyTeachingContent:Masterywordsandexpressions:forceOralwordsandexpressions:swimsuit,observation,turn…overTeachingAims:1.

UsetheSimpleFutureTensetodescribethethingthatwillhappen.2.

Grasptheknowledgebydoingtheexperiment.Enjoytheexperimentandfinishitbystudentsthemselves.TeachingImportantPoints:1.

GrasptheSimpleFutureTense.2.

Talkabouttheexperimentprocess.TeachingDifficultPoints:Somewordsandexpressions,suchas:talkabout,talkto,tellsb.,asksb.todosth.TeachingPreparation:jar,cardboard,water,picturesTeachingAids:audiotape,flashcards,pictures,jar,cardboard,waterTeachingProcedure:Step1.ReviewLesson25.LetsomestudentstalkaboutthemainideaofLesson25.Theteacherandthestudentscanask:1.

Whatdoweuseintheexperiment2.

Howdoyouturnthejarfullofwaterupsidedown3.

Whatdoyoucoveronthejar4.

What’syourtheoryStep2.Doasurvey:1.

Howmanystudentshavedonetheexperiment2.

What’stheresult3.

HowmanystudentsthinkDannyisgoingtogetwetReportittotheclass.Step3.Listentothetapeandletsomestudentsaskthefollowingquestions:1.

Whataretheytalkingabout2.

Whowilldotheexperiment3.

Whatwillhappentothewaterintheexperiment4.

Whatwillkeepthewaterinthejar5.

WhatwilltheydoaftertheexperimentStep4.Readthetextsilentlyandchecktheanswers.Readitinrolesinclassinindividualsoringroups.Step5.Letsomestudentsactthedialogueoutinfrontoftheclass.Step6.Cometo“LET’SDOIT.”Dotheexperimentingroups.Letthestudentsobservetheexperimentcarefully.Thengiveareporttotheclassaboutwhatitislike.DoanyonegetwetintheexperimentWhyStep7.Homework1.

Finishofftheactivitybook.2.

Goonthenextreadinginthestudentbook.Summary:Thispassageisaboutthetwoopinionstotheexperiment.Whydoyouthinksoisthemainexplanations.Letthestudentshaveabrainstorm.Theteacherwalksaroundandhelpsthemifitnecessary

Lesson26教案ClassopeningForideasandtipsonbeginningaclass,see“teachingtechniques”atthebackofthisteacher’sguide.Step1:Breaktheclassintogroupsoffourtodiscuss“Thinkaboutit”.Step2:Havethestudentslistentothereadingandseeiftheycananswerthisquestion:WhywillDannydryhimself(Hethinkshewillgetwetintheexperiment.)Step3:Playthetapeorreadthereadings,pauseaftereveryline,andaskthestudentstorepeat(a)inchorus,(b)insmallgroups,(c)individually.Step4:Askindividualstudentsquestions.Thestudentsgivenaturalanswers.WhataretheytalkingaboutWhowilldotheexperimentWhatwillhappentothewaterintheexperimentWhatwillkeepthewaterinthejarWhatwilltheydoaftertheexperimentStep5:Dividetheclassintosmallgroups.Askeachgroupsoactoutthereadinginanywaytheychoose.Theycanreadaloudwhatthecharactershaveactuallysaid.Theycanalsotalktooneanotherintheirownways,baseduponthetext.Step6:Askoneortwogroupstoperformtheirdramafortheclass.Step7:Ifyouhavetime,discussthereadingwithstudents.UseasmuchEnglishaspossible.Askquestionstomakeiteasierforstudentstoparticipateinthediscussion.Hereisanideaforyourdiscussion:ImaginethatyouarepresentingyourpresentationStep8:Cometo“let’sdoit.”ClassclosingThesecondreadinginthereaderTheremainingactivitiesintheactivitybookThenextreadinginthestudentbookLesson27教案ClassopeningForideasandtipsonbeginningaclass,see“teachingtechniques“atthebackofthisteacher’sguide.Step1:Dividetheclassintotwogroupstogetreadyforthetwoexperiments.Inclass,onegroupdoesthefirstexperimentandheothergroupdoesthesecondone.Eachgroupwilldotheirexperimentfortheclass.Step2:Letthestudentslistentothereadingsandseeiftheycananswerthesequestions:Forthefirstpassage:What’shappeningtoDannyIshegettingwetornotForthesecondpassage:DoeseverythingdissolveinwaterStep3:HavethestudentsofGroupOnereadthefirstreadingandhavethestudentsofGroupTworeadthesecondreading..Step4:Playthetapeorreadthepassage.Andthenaskthestudentstointerpretthepicture.Step5:Playthetapeorreadthereadingsagain,pauseaftereveryline,andaskthestudentstorepeat(a)inchorus,(b)insmallgroups,(c)individually.Step6:Breakthestudentsintogroupstodothetwoexperiments.Astheydoit,theyshoulddescribeitinEnglish.EncouragethemtouseasmuchEnglishaspossible.Step7:Letthestudentsdosomecomprehensioniftimepermits.Askindividualstudentsquestions.Thestudentsgivenaturalanswers.Step8:Askthreevolunteerstoactoutthereading.Therestfothestudentsshouldlisten,watchandrespondtoJenny’squestions.Step9:Havetheclassrewritethetextinthepasttense.Dividetheclassintotwelvegroups.Assignoneparagraphtoeachgroup.Eachgroupshoulddiscussandrewriteoneofthetwelveparagraphs.Thenhavearepresentativefromeachgroupreadaloudwhathasbeenrewritten.Commentontheirworkandremembertogivepraiseforgoodefforts!Step10:Cometo“Let’sdoit.”ClassclosingThethirdreadinginthereaderTheremainingactivitiesintheactivitybookThenextreadinginthestudentbookLesson28教案ClassopeningForideasandtipsonbeginningaclass,see“teachingtechniques”atthebackofthisteacher’sguide.Step1:Checktoseeifthestudentshavepreviewedthetextasrequired.AsktwovolunteerstoperformthedialoguebetweenDannyandBrianbylookingatthepicturesandspeechbubbles.Step2:Havetheclassreadthelyricsaloudasapoem.Youmaydividetheclassintotwogroups.Eachgroupwillreadonelineatatime.Makesurestudentscanreadrhythmicallywithagoodsenseoftherhymes!Step3:Playtheaudiotape.Havetheclassfollowintheirbooks.Step4:Havethestudentspracticesingingthesongrepeatedlyuntiltheysingitwell.Step5:Cometo“Let’sdoIt.”ClassclosingTheremainingactivitiesintheactivitybookThenextreadinginthestudentbookDependingonhowmuchtimeyouhave,youmaywishtoendtheclassbysingingthesong“FillMyPlate.”Lesson29AnEasterEggHuntLearningaims:1.Thenewwords:basket,hide,hunt,everywhere,Easter,begone2.Theimportantsentences:①Debbiewillhavefunlookingforthem.②Ican’tmakeeggs.③Canyoufindthem④Nowmybasketisfullofeggs.Learningimportantanddifficultpoints:1.fun①havefundoingsth.②It’sfuntodo/doingsth.2.辩析find,lookfor,huntLearningmethod:Listen,say,readandwrite.Learningsteps:Step1.ThenewwordsLearnthenewwordsonebyone.Step2.LookingandlearningLookatthepicturesandlearn.“HowtocelebrateEaster”Checktoseeifthestudentshavepreviewedthetext.Toseeiftheyunderstandthereading.Asktheclasssomequestionslikethis:WhatisEasterSundayWhatisanEasteregghuntWhatisanEasterBasketStep3.Playthetape.Havetheclassfollowthetape.Step4.Explanationlookfor=huntforhavefundoingsth.makeeggs=layeggsStep5.Sumup1.Mastertheusefulexpressions.2.MasterEasterDay.

Lesson30KeepthecandleBurning!Learningaims:1.Masterthenewwords:match,light,burn,useup,shallow,candleholder,oxygen,one-fifth2.Theimportantsentences:①Fillthedishhalffullofwater.②Asthecandleburns,itusesupoxygenintheair.③Thereisaboutone-fifthoxygenintheair,sothewaterrisesandfillsaboutone-fifthofthejar.Learningimportantanddifficultpoints:half的用法1.adv.“部分地，一半地”，2.adj.“半个的，一半的”halfayearLearningmethod:Listen,say,readandwrite.Learningsteps:Step1.ReadingReadthenewwordsandwrite.Step2.ListeningListentothetapeandfindouttheusefulexpressionsandthedifficultpoints.Step3.Explainandwriting1.as的用法(1)as…as(2)表方式“像，按照，如同”RunasIdo.(3)表时间，当……时候，一边……一边；Shesangassheworked.(4)表原因，因为(5)表让步，“虽然，尽管”2.分数的表达法：口诀：分子基，分母序，分子>1，分母加se.g.one-fifth;two-thirdsStep4.DoingMasterthestepsoftheexperiment.Thenaskthestudentstodoit.Doitasdescribe.Step5.DoexercisesStep6.Sumup1.Masterthewordsandexpressions.2.Mastertheexperiment.Step7.HomeworkAsyoudoit,describeitinEnglish.Thendoyourexperimentfortheclass.

Lesson31Surpriseyourfriends!Learningaims:1.Theimportantsentences:①Doyouwanttosurpriseyourfriends②Thecardboardwillholdthewaterup!③Scienceisinteresting!Learningimportantanddifficultpoints:1.Surprisesb.todosth.besurprisedatsthtoone’ssurprisesurprised及surprising区别2.辩析：interested及interestingLearningmethod:Listen,say,readandwrite.Learningsteps:Step1.Letthestudentslistentothetapecarefullywiththefollowingquestions.“WhatdidDannydescribeinhise-mail”Step2.Askthestudentstoreadthetextfastandhaveadiscussionaboutthee-mailindetail.Step3.Dividetheclassin