Unit13ThePropertiesofWaterTeachingGoals1.Talkaboutwaterandtheocean.2.Practicecommunicativeskills.3.ReviewModalVerbs.4.Writeanexplanationparagraph.TheFirstPeriodTeachingAims:1.Learnandmasterthenewwordsandtheusefulexpressionsofthispart.2.Learnsomethingaboutwaterbydoingexperiment.3Dosomelistening.4.Improvethestudents’speakingabilitybytalking.TeachingImportantPoints:1.Makethestudentsbefreetotalkaboutwater.2.Improvethestudents’listeningabilitybylistening.TeachingDifficultPoints:1.Howtofinishthetaskofspeaking.2.Howtoimprovethestudents’listeningability.TeachingMethods:1.Listening-and-answeringactivitytohelpthestudentsgothroughwiththelisteningmaterial.2.Individual,pairorgroupworktomakeeverystudentworkinclass.TeachingAids:1.themultimedia2.theblackboard3.anemptyglass,abottleofwaterandabottleofvegetableoilTeachingProcedures:Step1GreetingsandLead-inReadashortpoemandguessitsname:Aletterfrom_______.(Water)DearUser,Shametoyouall,theIgnorant,IamyourlifeButyouseemnottovaluemeGivemealltherespectForinmeiseternallifeIfyoucontinueabusingmeSurely,allformsoflifewillwitherawayHaveyoueverimagined,Lifewithoutme?Itellyou,itwillbeunbearableThinktwiceForeverydropcounts...Qs:1)Whatdoes“Dearuser”herereferto?用心爱心专心2)Whatdoesittalktoitsusers?3)Onwhichplanetdoesitexist?－Ontheearth,whichisalsocalledthewaterplanet.4)Doyouknowwhyitiscalled“Thewaterplanet”?－Becauseaboutthreequartersoftheearthiscoveredbywater.Step2:Pairwork:Collectasmanywordsaspossiblerelatedtowater.Qs:Howmuchdoyouknowaboutwater?Isallwaterfreshorsalty?Step3:Talkaboutthepropertiesofwater.1.PairworkT:Waterisaroundusandinsideus.Wecan’tgowithoutwater.Qs:Whyiswatersoimportanttolivingthings?Canyoupointoutsomeofitspropertiesorcharacteristics?Suggestedvocabulary:It'scolorless,tasteless,odorlessanduniversaldissolvent.Itfeelswet;Itexistsinthreeforms:liquid,solid,gas,andiscycledthroughthewatercycle;Itcanabsorbalargeamountofheat;Itstickstogetherintobeadsordrops;It'spartofeverylivingorganismontheplanet;etc.2.GroupworkLearnmoreaboutwater’spropertiesbydoingsomesimpleexperimentsandlearntodescribeanexperiment.用心爱心专心PropertieswaterWhatpropertyofwaterdoeseachofthefourexperimentsillustrate?Whatcausesthisphenomenon?What’sthisphenomenonrelatedto?①Experiment1showshowairpressurecausesapieceofthickpapertoclingtoanupturnedglassofwater.②Experiment2illustrateshowsubstanceswithdifferentdensitybehavewhenplacedinthesamecontainer.③Experiment3isanexampleofhowwaterdissolvessubstancesandobjects.④Experiment4illustratessomeofthedifferencesbetweensaltwaterandfreshwater.3.T:Whatotherpropertiesofwaterdoyouknowabout?Whatcausesthefollowingphenomena?Canyouexplain?Wecangetalotofnutrientsbydrinkingwaterandhavingsoup.①Woodfloatsonwaterwhileironsinks.②Thecoastalareasareoftenneithertoohotnortoocold.③Whycansomelivingthingsliveatthebottomoftheoceanwherethereisno④sunshine?(Ifthesequestionsaretoodifficult)Tryaskingquestionsaboutthepropertiesofwaterandthengiveanswerstothem.Step5:Homework1．Readthetextcarefullyandfindoutthedetailedinformationaboutwaterproperties.2．Thinkasmanyexamplesaspossibletoillustratewaterproperties.TheSecondPeriodTeachingAims:1.Learnandmasterthesomenewwordsandphrases.2.Improvethestudents’readingability.3.Enablethestudentstorealizethatitisimportanttoprotectthewateronourplanet.TeachingImportantPoints:1.Improvethestudents’readingability.2.Ma...
