高二英语下Unit13集体备课教案Designer曹军.docx

高二英语下Unit13集体备课教案Designer曹军.docx

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高二英语下Unit13集体备课教案Designer曹军

高二英语下Unit13集体备课教案Designer:

曹军科

TeachingPlanforUnit13

Thewaterplanet

Teachinggoals:

1.Talkaboutwaterandtheocean

2.Practicemakingsuggestionsandexpressingopinions

3.ReviewModalVerbs

4.Writeanexplanationparagraph

TeachingPlan:

（SixPeriods）

1stperiod:

TeachingnewwordsandWarming-up

2nd-3rdperiod:

Reading

4thperiod:

IntegratingSkills

5thperiod:

Grammar

6thperiod:

Exercises

Period1Teachingnewwords&Warmingup

TeachingAimsandDemands:

1.TogettheSstounderstandthemainpropertiesofwaterbyconnectingthemwithsomecommonphenomenaandlearningtoexplainthephenomena.

2.Toenablethemtobeawareoftheimportanceofwater,makinggooduseofwaterinaproperwayandprotectingwaterresources.

TeachingDifficultPoint:

Talkabouthowtousewaterandprotectit.

TeachingAids:

Somewater,someoilandaglass;blackboardandmultimedia

TeachingProcedures:

Step1.Lead-in

AsktheSssomequestionsasfollows

T:

Waterisaroundusandinsideus.Wecan’tgowithoutwater.Qs:

Whyiswatersoimportanttolivingthings?

Canyoupointoutsomeofitspropertiesorcharacteristics?

Suggestedvocabulary:

It'scolorless,tasteless,odorlessanduniversaldissolvent.

Itfeelswet;

Itexistsinthreeforms:

liquid,solid,gas,andiscycledthroughthewatercycle;

Itcanabsorbalargeamountofheat;

Itstickstogetherintobeadsordrops;

It'spartofeverylivingorganismontheplanet;etc.

AskstudentsthenamesofOceansandContinents:

ThePacificOcean,theAtlanticOcean,theIndiaOcean,theArcticOcean;Asia,Africa,Europe,theNorthAmerica,theSouthAmerica,Antarctica,Oceania

Step2.Warmingup

Usethewater,theoilandtheglasstodothreeexperiments.Learnmoreaboutwater’spropertiesbydoingsomesimpleexperimentsandlearntodescribeanexperiment.

Whatpropertyofwaterdoeseachofthefourexperimentsillustrate?

Whatcausesthisphenomenon?

What’sthisphenomenonrelatedto?

①Experiment1showshowairpressurecausesapieceofthickpapertoclingtoanupturnedglassofwater.

②Experiment2illustrateshowsubstanceswithdifferentdensitybehavewhenplacedinthesamecontainer.

③Experiment3isanexampleofhowwaterdissolvessubstancesandobjects.

④Experiment4illustratessomeofthedifferencesbetweensaltwaterandfreshwater.

Step3.Speaking

1.Pre-speaking

1）Doyouagreewiththesaying“Withoutwater,lifewouldnotexist.”?

2）SonotonlyyouandIagreewiththisopinion,butalsotheUnitedNationsholdthesameview.Andthat’swhywehaveWorldWaterDay.

Q:

Isthereanyonewhoknowswhenitis?

－Mar.22

3）BriefbackgroundinformationaboutWorldWaterDay:

WorldDayforWaterisestablishedbytheUnitedNationsGeneralAssembly'sresolution47/193of22December1992.Itisauniqueoccasiontoremindeverybodythatconcreteeffortstoprovidecleandrinkingwaterandincreaseawarenessworld-wideoftheproblemsandofthesolutions,canhelpmakethedifference.

4）Lastyearwewitnessedsomegreatdisasterssuchasthetyphoon“Yunna”andthetsunamiintheIndiaOcean.WhatacoincidencethatthethemeforWorldWaterDay2004was“WaterandDisaster”.WorldWaterDay2005willbeguidedbytheupcomingwaterdecade'stheme"WaterforLife".ItwillbethestartingdayforthisInternationalDecadeforAction,"WaterforLife".

2.While-speaking

1）Tosomeextent,theexistenceofWorldWaterDayalsoimpliesthathumanbeingscannotlivewithoutwater.Why?

Canyoutellhowwaterisbeingusedinourlife?

Givesomeexamples.

－Electricity,agriculture,homeuse,industry,transport,entertainment,etc.

2）Lookatthefirstpicture（“electricity”）inthetextbookandtalkaboutit.

Thewaterisbeingusedtogenerateelectricity.Buildingupbehindahighdam,wateraccumulatespotentialenergy（势能）.Thisistransformedintomechanicalenergywhenthewaterrushesdown.Itisagoodwaytousewaterbecausewaterisrenewablegreenenergy.Itwillneverrunoutifonlyweuseitproperlyandgeneratingelectricitybyusingwaterisabetterwaytoprotecttheenvironmentthanothers.However,ittakesagreatsumofmoneyandalongperiodoftimetobuildadamandpreparealltherequiredequipment.Sincenowadayselectricityhasalreadybeenanindispensablepartofourlife,mostpeoplebenefitfromusingwaterinthisway.

3）Groupwork.Dividestudentsintoseveralgroupswithsixineach.Eachonetakeschargeofonepicture.

Whendiscussingeachpicture,pleasethinkaboutthefollowingquestions:

Howiswaterbeingused?

Whatpropertyofwaterenablesittobeusedinthisway?

Whydoweusewaterinthisway?

Whobenefitsfromusingwaterinthisway?

Isthisagoodwaytousewater?

Whataresomedisadvantagesofusingwaterinthisway?

4）Pairwork.Eachsix-membergroupcanbedividedintothreesmalleroneswithtwoineach.Makeadialogueonthebasisoftheresultsaboutyourtopicswereach,usingfollowingusefulexpressions:

Thewaterisbeingusedto/for…Weshould/could…

Whatwillwedoif…?

Ifwe…,wecan…

Itwouldbebetterto…Canyouthinkofabetterway

Step4.Homework:

Recitethenewwordsandexpressionsinthisunit.

Period2Reading

TeachingAimsandDemands:

1.TohelptheSslearnsomelanguageknowledge,patternsandlanguageitemsaswellasscienceknowledge.

2.TodeveloptheSs’abilityofreadingcomprehensionthroughreadingactivities.

3.TohelptheSsunderstandwhywaterissoimportanttousandwhatwecandotoprotectwater.

TeachingDifficultPoint:

1.Understandeachpartofthepassage.

2.TohelpimproveSs’communicativeskillsbyintroducingtheproperuseof“Modalverbs”.

TeachingAids:

Arecorder,someslides

TeachingProcedures:

Step1:

Leadin

Asksomequestionstomakestudentsgettoknowsomethingaboutwater.

Step2.FastReading

Ssreadtheboldwordsinthepassageandunderstandthestructureofthepassage.

Howmanypartsarethereinthepassage?

Ssreadandgetthemainideasofeachpart.

Part1（para1）:

thepropertiesofwater;

Part2（Para2）:

chemicalstructureofwater---H2O

Part3（Para3）:

salinity-----thepercentageofsalt.

Part4（Para4）:

Density

Part5（Para5）:

heatcapacity

Part6（Para6-7）Oceanmotion

Step3.CarefulReading

Readthepassagecarefullyandanswerthefollowingquestions.

1.Whatarethepropertiesofwater?

Waterispolar.

Waterisliquidatroomtemperature.

Waterhasarelativelyhighfreezingpoint.

Waterhasdensity1,000kg/m3.

Waterhashighheatcapacity.…

2.Whatcauseswatertohavesuchuniqueproperties?

－Itsmoleculeform/chemicalstructure.

3.Whatiswatermoleculelike?

Chemicalstructure:

twohydrogenatomsandoneoxygenatom.

Differentpartsofit:

aslightlypositiveendandaslightlynegativeend,soitispolar.

Thefunctionofit:

itcauseswatertobeabletodissolvebothsolidsandgases,andthat’swhywatercanbreakdownnutrientsquickly.

4.Dopurewaterandsaltwaterhavethesamechemicalstructure?

Doespurewaterhavesalinity?

Qs:

1）What’ssalinity?

2）Whatissea/saltwater?

－Amixtureofpurewater,dissolvedgasesandsolids.

3）Howdoessalinityaffectwater?

4）Howdoesitaffectwater’sweightandfreezingpoint?

－Thehighersalinitywaterhas,theheavierthewateris.

Thehighersalinityis,thelowerthefreezingpointofwateris.

5.Salinityalsohassomethingtodowiththedensityofwater.

Thehighersalinityis,thehigherdensityofwateris.

Qs:

1）Whatisdensity?

2）Howisdensitymeasured?

3）Whichisdenser,wateroroil?

4）Whatwillhappenwhenwaterandoilareinthesamecontainer?

Whatdoesthisphenomenonillustrate?

－Oilfloatsonwater.Alessdensesubstancefloatsonadensersubstance.

5）Doeswaterinthesameoceanhavethesamedensity?

－No.Denserwatersinksandpusheslessdensewatertothesurface.

6.That’swhytheoceanwaterwillneverstopmoving.→Oceanmotion

Qs:

1）Whatdoesoceanmotionmean?

2）Howdoesoceanmotionwork?

－Denserwatersinksandpusheslessdensewatertothesurface.

Oceanmotionhelpsmovenutrientsaroundandaddsenergytothemarineecosystems.

3）Whatcausesoceanmotion?

－Changesinsalinityandtemperature.

7.Thetemperatureoftheoceanwateralwayskeepssteady,makingtheoceanasafeandcomfortablehabitat.Doyouknowwhy?

－Waterhasarelativelyhighheatcapacity.

Qs:

1）Whatisheatcapacity?

2）What’sthefunctionofheatcapacity?

－Itdetermineshowasubstanceabsorbsandreleasesheat;

Itkeepswatertemperaturesteady;

Itkeepstheearth’stemperaturesteady.

Period3Reading

LanguagePoints

ParagraphOne:

1.rangefrom…to…rangebetween…and…在……和……之间变化

Thereare200boysrangingfrom7to14inage.

Pricesrangedfrom5dollarsto10dollars.

Theshowhadamassiveaudience,rangingfromchildrentograndparents.

rangeover范围包括

Ourconversationrangedovermanysubjects.

2.alltheway自始至终，一直，一路上

Allthewayback,theytalkedaboutthepersonsandthingsthattheycouldrememberatschool.

Itisverykindofyoutocomeallthewaytoseeme.

Westayedinthegamealltheway.

bytheway顺便一题innoway绝不inaway在某种程度上intheway阻碍

3.agreatplacetolive不定式短语作后置定语修饰表示地点的名词时,如果这个不定式中的动词时不及物动词,后面必须跟一个介词。

如:

aroomtoliveinahometogoto

注意:

如果前面的名词是place时,介词可以省略

aplacetolive;aplacetogo

ParagraphTwo:

1.unique“独一无二的;仅有的;唯一的”

Thisisauniqueworkofart.

Itisauniqueopportunityforyoutosucceed..

词组:

uniquetosb./sth.仅与一个人或一个群体或一件事物有关

Youshouldconcernthespecialdifficultiesuniquetoblindpeoplewhenbuildingagym..

2.propertyn.特性,性质（c）