高中英语 Unit 2 Sailing the oceans单元学案 新人教版选修9VIP免费

Unit2SailingtheoceansPartOne:TeachingDesignPeriod1:Asamplelessonplanforreading(SAILINGTHEOCEANS)AimsTohelpstudentsreadaboutsailingtheoceansTohelpstudentslearnaboutthepredicateProcedures■WarmingupbyleaningaboutnavigatorWhatisanavigator?Anavigatoristhepersononboardashipresponsibleforthenavigationofthevessel.Onaircraft,thepositionmayalsobereferredtoasaflightofficer.Thenavigator'sresponsibilitiesincludeplanningthejourney,advisingthecaptain(orpilot)whileenroute,andensuringthathazardsorobstaclesareavoided.Whatisexploration?Explorationistheactofsearchingortravelingforthepurposeofdiscovery,e.g.ofunknownregions,includingspace(spaceexploration),oroil,gas,coal,ores,water(alsoknownasprospecting),orinformation.Explorationhasexistedaslongashumanbeings,butitspeakisseenasbeingduringtheAgeofExplorationwhenEuropeannavigatorstravelledaroundtheworld.Inscientificresearch,explorationisoneofthreepurposesofresearch(theothertwobeingdescriptionandexplanation).Explorationistheattempttodevelopaninitial,roughunderstandingofsomephenomenon.■WarmingupbytalkingaboutZhengHe'sSevenVoyagesInJuly11,1405,theeunuchZhengHeoftheMingDynastyroyalcourtsetoutonhisfirstoverseasvoyage.Inthefollowing28years,thisnavigatorproceededtocarryoutsixmorevoyages,accompaniedbyahugeentourageofnearly30,000people.BytravelingthroughoutSoutheastAsia,andaroundtheIndianOceantotheRedSeaandEastAfrica,healsolandedatoverthirtydifferentnations.Hewastheearliestlargestscalenavigationinworldhistory,comingmorethanhalfacenturyearlierthanColumbus'famousexploits...■WarmingupbylookingandlisteningHello,class.Doyouknowthisman?Yes,heisMarcoPolo.MarcoPolo(1254-1324),isprobablythemostfamousWesternertraveledontheSilkRoad.Heexcelledalltheothertravelersinhisdetermination,hiswriting,andhisinfluence.HisjourneythroughAsialasted24years.Hereachedfurtherthananyofhispredecessors,beyondMongoliatoChina.HebecameaconfidantofKublaiKhan(1214-1294).HetraveledthewholeofChinaandreturnedtotellthetale,whichbecamethegreatesttravelogue.I.Pre-readingWhatarenavigationalinstruments?●Navigationalinstrumentswerebuiltintheageofexplorationtoguidetheexplorerstotheirdestinations.●navigationalinstrument-aninstrumentusedfornavigating◇artificialhorizon,flightindicator,gyrohorizon-anavigationalinstrumentbasedonagyroscope;providesanartificialhorizonforthepilot◇compass-navigationalinstrumentforfindingdirections◇depthfinder-navigationalinstrumentusedtomeasurethedepthofabodyofwater(asbyultrasoundorradar)◇inclinometer-aninstrumentshowingtheanglethatanaircraftmakeswiththehorizon◇instrument-adevicethatrequiresskillforproperuse◇asdic,echosounder,sonar-ameasuringinstrumentthatsendsoutanacousticpulseinwaterandmeasuresdistancesintermsofthetimefortheechoofthepulsetoreturn;sonarisanacronymforsoundnavigationranging;asdicisanacronymforanti-submarinedetectioninvestigationcommitteeII.ReadingforformsReadthetextSAILINGTHEOCEANSonpage12to:cut/thesentenceintothoughtgroups,blackenthepredicative,darkentheconnectivesandunderlinealltheusefulexpressions.SAILINGTHEOCEANSWemaywellwonder/howseamenexploredtheoceans/beforelatitude/andlongitudemadeitpossible/toplotaship'sposition/onamap．Thevoyagesoftravelers/beforethe17thcentury/showthat/theywerenotatthemercyofthesea/eventhoughtheydidnothavemodernnavigationalaids．So/howdidtheynavigatesowell?Readthesepages/fromanencyclopedia．Pagel：UsingnaturetohelpKeepin...