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(人教版unit13reading andintegrating skiI Is高二英语下册教案教学设计)Teaching Aims:
1.Learn andmaster the following words and phrases:cube,property all the way,that is….
2.Improve the students readingability
3.Enable the students torealize thatit isimportant to protect thatwateron our planet.Teaching ImportantPoints:
1.Improve thestudents readingability
2.Master the following phrasesAllthe way,that is,mix with,take advantageof,manage todoTeaching DifficultPoints:How tomake thestudents understand the readingpassage betterTeachingMethods:the blueseas.99%of the living spaceon earthis in the oceans.What does this factresult inMarine lifeis incrediblyrich andvaried.Can you give somespecific numbersor examples5million species inthe oceansWhat does thisfact implyDo you agreeParagraph
2.H20:2+1=1medium:average channelmeans conditionpolar:+-t positiveend:+-t Inegativeend:+-t INormalstate of water:solid liquidgasWhy is the chemical structure of water important
1.Because water is polar,it canbreak downboth solids and gases.
2.The nutrients in whateverfalls into the oceanquickly becomeavailable to other living creatures.
3.The chemicalstructure of water alsomakes itdifferent fromalmosteverything elseon earth.The nutrientsin whateverfalls into the oceanquicklybecome availableto otherliving creatures,paraphraseWater is an excellentmedium forlife.Why do youagreewith it
1.Water isa liquidat roomtemperature andhas arelatively highfreezing point;
2.All livingcreatures needfood tosurvive,but onmany occasionsthenutrients becomeavailabletoliving thingsonly when they aredissolvedby water.Waters uniquechemical structureCan yougivesome otherexamples whichare alsoresulted from waters uniquechemicalstructure
1.We canget alot ofnutrients bydrinking soup.
2.Plants canpull waterup theirroots viaa capillary毛2田管process.Paragraph
3.sea watersalt water=dissolved gases+dissolved solids+pure watersalinityof sea water affects:weight andfreezing pointsalinityof sea water:35%o35%The salinityof the earth soceans is about
3.5%.What doesthis meanThere are about thirty-five gramsof dissolvedsolidsand gases inonekilo of water.In winterwater insome containersor smallrivers oftenfreezes whilethatin seasnot Can you explainit
1.The salinityof seawater canaffect thefreezing pointof water.
2.Sea waterhas alower afreezingpoint,so evenwhenthetemperatureof seawater fallsbelow0℃,seawateris stillliquid.Paragraph
4.Factors ofdensity:mass and volumeUnit ofdensity:kg/m3=kilogrammes per cubic metreDensityof purewater:1,000kg/m3=one cubicmetre of water weighsonethousand kilogrammesWhen waterfreezes,its densitydecreases.If itdid not,the oceanswould befrozen solid,paraphraseWhat isdensityDensity is the relationshipbetween massandvolumeand ismeasuredin kg/m3,reading kilospercubicmeter.The densityof wateris1,000kg/m
3.Does italso goesfor thephenomenon thatice lookslarger thanwaterdoesOrdered molecularstructure offrozen watericeSemi-ordered molecularstructure ofliquid waterWhatdo differentdensities in the oceanresult inWaterin the ocean isalways moving.What phenomenacan thisresult helpus explainPlease giveexamples.
1.Ocean motionhelps movenutrients aroundand addsenergy tothemarine ecosystems.
2.Different marinecreatures livein differentlevels of the ocean.Because of the foodsthey need,sunshine etc.Heat capacity:water temperaturesubstanc energyOppositeword/phrase of absorb:give offchange createParagraph
6.How doesthe waterin the ocean moveDensewater sinksand lessdense wateris pushedtothesurface.Paragraph
7.Main idea:significance of water tonatureWater,which seemsso simpleand common,is whatmakes lifepossible.Of all the resourceson earthoil,gas,gold andso on--nothing is一一as precious as adrop ofrain,paraphraseRead followingstatement andthink whatconclusion youcan drawOrwhat propertydoes itrefer toIt issaid thata manof60kg losesaboutIL waterthrough breathand skinevaporation皮肤蒸发every day.Inother words,539kcal heatis releasedin thesetwo ways.If somuch heatwerekept inhuman body,it wouldraise bodytemperature by9℃.Canyouimagine theresult Waterhas arelatively highheat capacityandcan accommodatethe climateautomatically.It canabsorb andreleasea lot of heatwithout bigchanges inits temperature,thus creatinga stableenvironment.Here aresome morefamiliar phenomena,what property of waterare theyrelatedto
1.The coastalareas areoften neithertoo hotnor toocold.
2.Ice floatson water.
3.When theseawaterin acontainer isevaporated(蒸发),therewill besome saltleft.
4.Irrigate inwinter canhelp raisethe soiltemperature.
5.People swimmingin theDead Seafloat;they caneven reada paperwhilelying on their backin the water.HomeworkTry tothink as many examplesas possibleto showthat wateris madeuse of tobring benefit to human beings.Step7Further Understandingand LanguageStudy
1.come up with想出(方案、答案等)He couldnt comeupwithan answerwhen Iasked himwhy hewas late.come about发生come across偶然遇come out出版
4.make notesof=take notesof登,己Language pointsin the text
1.incredibly adv.extremely orunusually难以置信的e.g.The wateris incredibly hot.
2.range vi.range fromA toB e.g.Their agesrange from25to
50.His interestsranged fromchess tocanoeing.
3.all the way始终,一路上,完全
4.But the way the water moleculeee.g.I dont likethewayinwhich/that helooks atme.They admiredthewayin which/that shedealt withthe crisis.
5.that isto saywhich meanse.g.A weeklater,that is,May1is herbirthday.也就是说He isa localgovernment administrator,that is,he isa CivilServant.
6.break downv.毁掉,压倒,倒塌,中止,分解
7.available adj.that can be usedor obtained可用的,可获得的e.g.Tickets areavailable at the boxoffice.The bookis availableto allthestudents.
8.on earth在世界上,到底,究竟
10.say插句中假定,比如“What wouldyou doif yougot,say,amillion dollars
11.take advantageof makeuseofsomething welle.g.They tookfull advantageof thehotel sfacilities.
1.Life in the oceans ranges from the tiniest plankton allthe wayupto giants like sharks and whales.海洋里有从最小的浮游植物始终到像鲨鱼和鲸鱼这样的庞然大物P
12.Water isactually quitesimple,but theway thewater moleculeisformed giveswater itsunique properties.水实际上很简洁,但水分子形成的方式给予了水独特的性能P
4.Heat capacityis theamount ofenergy ittakes toraise thetemperature of asubstance one degree centigrade.热容量是指将一种物质的温度上升一摄氏度所需的能量It前面省略了关系代词that/which.不定式引导的是真正的主语
5.The waterin the oceans alsokeeps thetemperatureof the earthsteadyby absorbingand givingoff heat.由于海水的吸热和释热的作用,从而使地球的温度保持稳定We shoulddo allwe cantoprotectwater frombeing polluted!Step8Activity
6.SummaryFeatures ofScience ExpositionA.Sentence Structured.Vocabulary:C.Tense:D.Text Structure:INTEGRATING SKILLSTeachingAims:
1.Review modalverbs
2.Do someexercises toreviewTeaching ImportantPoints:Review modal verbsTeaching DifficultPoints:How to help thestudents correctlyuse the modalverbsTeachingMethods:
1.Review methodtohelpthestudentsremember allthemodalverbs
2.Individual workor groupwork tomake everystudent workinclass
1.Discussion beforereading tomake thestudents interestedin whattheywill learn
2.Fast reading to get a generalidea of the text
3.Discussion afterreadingtomake studentsunderstand whattheyve learnedbetter
4.Careful readingto getthe detailedinformation in the textTeachingAids:
1.the multimedia
2.the blackboardTeachingProcedures:Step1Warming upCollectas manywords aspossible relatedto water.Ice oceanlake riverrain sweatfish steamWhatproperties orcharacteristics do you know about waterColorlesstasteless odorlessthree formsabsorbing heatdissolvingfeeling wetGroupwork:What propertyofwater does eachof thefour experimentsTeachingAids:
1.the multimedia
2.the blackboardTeachingProcedures:READING:NATURE5S NURSERY:ESTUARIESStep1Lead-in
2.How muchdoyou knowabout them Is the economythere well-developedor not
3.Which cityisthemost developedWhy
4.Canyoutell whatmap it is Whereis it
5.Isthewater heresalty orfresh
6.Whats theplace whereriver andthe oceanmeetStep2Skimming:Find thedefinition ofan estuaryAnestuary isthe bodyofwaterwhere ariver meetsthe ocean.Saltwater from the oceanand fresh water fromthe rivermix togetherin anestuary.This mixingof fresh and salt water creates a unique environmentfilled withlife ofall kinds—a zonebetween theland andsea.What kindsof functionof estuarieshave beenmentioned in thepassage
1.Great placesfor natures younganimals cleanour waterbyabsorbing nutrients and pollutants from water coming from inland sources;
2.Provide both recreation and education for humanbeings.Discussion:
1.What livingconditions doyou thinkare neededfor natures youngones
2.Do estuarieshave suchconditions for themStep3ScanningRead thepassage andanswer the following questions.
1.Why areestuaries suchgood placesfor naturesyoung onesIn estuaries,animals canenjoy allthe benefitsof the oceans withouthavingto facemany ofits dangers.Tides provideenergy forthe ecosystems,but estuariesare protectedfromwaves andstorms byislands,mud orsand.Nutrients fromboth theland andthe oceanarrive in estuaries.
2.What doesdensity meanin thispassageIt meansthe numberofspecies perarea.
3.How doyou estuaries affect thewater that passes through themThey absorbnutrientsandpollutants fromwater cominginland sources,thus cleaningour water.
4.Why areestuaries moresensitivetopollution thanother areasBecauseestuaries actas filters(过滤器),many pollutantsendup in them.
5.Why areestuaries importantto humanbeingsEstuaries provideboth recreationand educationfor humanbeings.1People canfish,swim andhave funon thebeach.Scientists andstudents haveendless opportunitiesto studya varietyof life in the habitat.Estuaries alsocontribute tothe economythrough tourismand2fishingFinish thefollowing passagewith wordsfromthe text.Estuaries arebodies ofwater alongcoasts thatare formed(形成)when freshwater fromrivers flowsinto and_mixes withsalt waterfromthe ocean.In estuaries,the freshriver wateris blockedfrom streamingintothe openocean byeither surroundingmainland,or islands.This mixingoffreshandsaltwatercreatesauniqueenvironmentfilled withlife ofallkinds-a zonebetween theland andsea knownas anestuary.The estuarygathers andholds avariety of life-giving nutrientsfromthe landand fromtheocean,forming anecosystem thatcontains morecreaturesthan anyother habitatonthe earth.Estuaries arealso importantforhumanbeings.Theyprotect waterquality byabsorbing pollutantsfromwatercoming frominlandsources.They arecenters forentertainment()肖遣)and education.Estuaries,in short,are treasures.Step4Activity
1.Finding Topic SentencesTopic Sentence of Paragraph:_1Sentence:As the oceans arethe sourceoflifeon earth,the estuariesareour planetsnurseries.Topic Sentenceof Paragraph:_2Sentence:Estuaries aregreat placesfor naturesyoung onesTopic Sentenceof Paragraph:3Sentence:Estuaries arealso importantbecause theyabsorb nutrientsandpollutantsfromwatercomingfrominlandsources,thus cleaningourwater.Topic SentenceofParagraph:4Sentence:Estuaries providebothrecreationandeducationfor humanbeings.Provent•••against/from StopeeefromKeep..fromStep5Activity
2.Structure of the passageStep6Activity
3.Answering the questionsIWhy areestuaries suchgood placesfor naturesyoungones2What doesdensity meanin thispassage3How doestuariesaffectthewater thatpassesthroughthem4Why areestuaries moresensitivetopollution thanother areas5Why areestuaries importantto humanbeingsStep7Activity
4.Word StudyPollutantsomething thatpollutes,especially awastematerialestuarythe bodyofwaterwhere ariver meetsthe oceanrecreationrefreshment ofones mindor bodyafter workthroughactivity thatamuses orstimulatesmammalwarm-blooded vertebrateanimalsreproduceto generateoffspring bysexual orasexual means.erosion腐蚀,侵蚀the processof erodingorthecondition ofbeingerodedStep8WritingTip1If youare describinga process,
1.You shouldexplain eachstep in the orderit happens.
2.Tell thereaders aboutthe causes and effectsand usewords likefirst,second,then,etc toshow theorder of the steps.First…Second…Third/Then…Last…Tip2If youare writingabout somethingthat hasseveral parts,describeeach partand explainits functionand structure.The followingquestionsmay help:
1.What isitHow manyparts isit madeup of
2.What sthe structure of eachpart How does itwork
3.What sthe functionof thethingImagine thatyour scienceteacher askyou toexplain oneof thefollowingquestions:
1.Why doesan icecube float
2.What willhappen toa piece of metalif youput itin water
3.Why doso manyspecies liveinestuaries
4.Why haveso manycities beenbuilt byestuariesChoose oneof thequestions andwrite apassage,using what you knowaboutnature andscience andwhatyouhave learnedfrom thisunit.Step9HomeworkChoose oneof thequestions andwrite apassage,using whatyou havelearnedabout waterfrom thisunit andnew wordsand sentencestructuresof thisunit aswell.文档内容到此结束,欢迎大家下载、修改、丰富并分享给更多有需要的人illustrateWhat causesthis phenomenonWhatsthisphenomenon relatedtoExperimentsExperiment1shows howair pressurecausesapieceofthick papertocling toan upturnedglass ofwater.Experiment2illustrates howsubstances withdifferentdensity behavewhen placedinthesame container.Experiment3isanexample ofhow waterdissolves objects.substances andExperiment4illustrates someof thedifferences betweensaltwater andfreshwater.What otherproperties ofwaterdoyou knowWhatdoyouthink causesthefollowingphenomenaWe cangetalotofnutrientsinthe soup.Wood floatson waterwhile ironsinks.The coastalareas areoften neithertoo hotnor toocold.Why cansome livingthings liveatthebottom of the oceanwherethere isno sunshineStep2Pre-readingQuestions relatedtothesubjectsWhat is/are_the propertiesof waterWhatdoes onepropertyofwater look likeWhat aredifferent parts of the oceansWhat canthe oceansbe comparedtoHow doesthe oceansworkWhat aresome examplesoflifeintheoceanActivity
1.Structure ofthe passageA:1minute toskim thepassage,focusing onthe titlestitle andsubtitlesinthetextand thenfill inthe chartbelow.You donot needtoread thewhole text.THE PROPERTIESOF WATERSALINITY OCEANMOTION HEATCAPACITY DENSITYCHEMICALSTRUCTUREB:Use thetopic ofeach paragraphandthestructure aboveto makesixquestions.Work ingroups andfill inthequestions.Write downyouranswers andanything elseyouknowaboutthetopic.What is/are What canbe compared toWhatdoes looklike HowdoesworkWhat aredifferent partsofWhat aresome examplesofActivity
2.Word StudyA:Look atthe titlesofthe reading.Which ofthefollowingwordsdo youthink willbe inthereadingpassage whenwe talkabout thistopic.Freezing dissolvedecrease sensitivestable absorbrange floatrange:to varywithin specifiedlimitsfreezing:dissolve:to reducesolid matterto liquidform;meltfloat:to causeto remainsuspended withoutsinking orfallingdecrease:to growor causeto growgradually lessor smaller,as innumber,amountabsorb:to takesomething instable:resistant tochange ofposition orcondition sensitive:responsive toexternal conditionsstimulationStep3Fast ReadingAnswerthefollowingquestions:
1.What arethe propertiesofwater
2.Whatdoestheearthlooklike
3.What aredifferentpartsoftheocean
4.Whatcantheoceanbecomparedto
5.Howdoesthe specialair-conditioner-theoceanwork
6.What aresome examplesof speciesintheoceanFind outasmanywordsandphrases aspossible aboutwater propertiesinthetext.True orfalse:T
1.Water isa liquidat roomtemperature,and ithas arelativelyhigh freezingpoint.
2.The reasonwhy watercan dissolvemost substanceson earthis thatwaterhas highheat capacity.
3.Like allthe othersubstances,water getssmaller contract缩小when itfreezes.T
4.Pure waterhas ahigher freezingpoint andlighter thansaltwater.T
5.The salinityoftheearth soceans isabout
3.5%.
6.When waterfreezes,its densityincreases.
7.Other recoursessuch asoil,gas,gold etcis aspreciousasa dropofrain.Who cantell methe generalidea ofthe textThepassage mainlytells usitiswaterthatmakes theocean soimportanttoallthelivingthings inthe world.Step4Careful ReadingFindout somebasic factsabout lifeinthe oceansBasic factsabout lifeintheoceans fromthe openingparagraph:Life on earth beganintheoceans aboutthree billionyears ago;99%oftheliving spaceon earthis intheoceans;Thereareabout fivemillion knownspeciesintheoceans;Life intheoceansranges fromtiny planktonto giantwhales.Step5Activity
3.Finding Topic SentencesTopic Sentenceofthetext:Paragraph:7Sentence:Learning aboutthe propertiesofwaterhelps usunderstandlife onourplanet.Topic Sentenceof CHEMICALSTRUCTURE:Paragraph:2Sentence:The chemicalstructureofwater makesit anexcellent mediumforlife.Topic Sentenceof SALINITY:Paragraph:3Sentence:The salinityoftheearths oceansisaboutthirty-fiveparts perthousand,meaning thatthere areaboutthirty-five grammesofdissolved solidsandgasesin onekilogramme ofwater.TopicSentenceof DENSITY:Paragraph:4Sentence:The densityof purewateris1,000kg/m3,meaning thatonecubic metreofwaterweighs onethousand kilogrammes.TopicSentenceof HEATCAPACITY:Paragraph:5Sentence:Heat capacityistheamount ofenergy ittakes toraise thetemperatureofasubstance byonedegreecentigrade.TopicSentenceof OCEANMOTION:Paragraph:6Sentence:Since changesin salinityand temperatureaffect watersdensity,thewaterintheocean isalways moving.Step6Activity
4.Comprehension AParagraph
1.marine life:definition basedonthetextNinety-nine percentoftheliving spaceonearthisintheoceans.incredibly:unbelievably doubtfullyextremely questionablyLifeintheoceansrangesfromthetiniestplanktonalltheway uptogiantslikesharksandwhales,paraphraseA diverseworld Naturalselection Lifefirst appearedin。