高二英语下 Unit 13集体备课教案 Designer.docx
《高二英语下 Unit 13集体备课教案 Designer.docx》由会员分享,可在线阅读,更多相关《高二英语下 Unit 13集体备课教案 Designer.docx(20页珍藏版)》请在冰豆网上搜索。
高二英语下Unit13集体备课教案Designer
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