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Unit5Revealingnaturereveal:makesomethingthatpreviouslyunknownknown.FREETALK:Whatanimalsareyouinterestedin?Groupwork.Discusstheanimalsyouareinterestedin.Whatmakesyouinterestedinthem?(oneminute)Lookatthepagefromasciencemagazineandanswerthequestions.1Whatdoyouknowabouttheseanimals?Whatmakesthemspecial?Theyareallspeciesthatexistthousandsofyearsonearth.Theyareoldandrare(unusual).Lookatthepagefromasciencemagazineandanswerthequestions.2.Whatothersimilaranimalsdoyouknowabout?Shareyourknowledgewiththeclass.Goblinshark哥布林鯊giantsalamander娃娃魚aardvark
土豚Livingfossil
活化石CharlesDarwinIfafriendofyouiscuriousaboutevolution,whichfamouspersondoyourecommendhimtoknowabout?Whatdoyouknowabouthim?Pre-reading:Predictthemainideaofthetextaccordingtothepictureandthetitle.AJourneyofDiscoveryChoosethemainideaofthepassageandgiveyourreasons.1.Darwin’sinterestinvariouslivingthingsmadehimagreatnaturalist.2.Darwin’sjourneyontheBeagleinspiredhisTheoryofEvolution.3.Darwinwentonajourneytoconfirmhistheorythathumanshadevolvedovertime.
Readforthemainidea(5minutes)Para1.Para2.Para3.Para4.Para5.Para6.Para7.A.Darwinwasnotthecaptain’sfirstchoicebuthisadventuresontheBeagleledtooneofthemostimportnatscientificdiscoveriesofalltime.C.Darwinbeganhisjourney.D.Darwinbegantothinkdifferently.B.SomebirdontheGalápagosIslandsinterestedDarwin.F.Darwinsuspectedthatthebirdsevlovedfromearlierancestors.G.MoreandmorepeoplestartedtobelieveDarwin’stheoryofevolution.E.OntheOriginofSpecies
isregardedasoneofthemostimportantworkseverwritten.Thispassageisanarrativeessay,inwhichDarwin’sjourneyofdiscoveryisdescribedintimeorder.Thiskindofessayisusuallyusedtotellaboutaspecificpersonorevent.Soit’sconvenienttopresentallthefactsfromearliertothelaterandit’smoreunderstandableforthereaders.BeforethejourneyDuringthejourneyAfterthejourneyPara.1Para.2Para.3Para.4Para.5Para.6Para.7IntroductionOnhisjourneyGenerateideasLookformoreevidenceDevelopideasProposeatheoryConclusionReadforstructure(oneminute)ReadfordetailsOrderthepuzzlepiecesandcompletethem.verysimilartoeachothercometoexistMaybeanimalsevolvedastheyadaptedtotheirchangingenvironments?12variouslivingthingsintheirnaturalenvironmentsandsamplesoftheplantsandanimalshehadcollected.thattherewasadifferencebetweenthefinchesoneachoftheislands.hadevolvedaccordingtowhatfoodwasavailableonthatparticularisland.hadevolvedfromacommonancestor,whichhadarrivedontheislandsalongtimebeforeslowlyevolvedintomanynewspecies.hadevolvedfromlowerformsoflifeWhatwasDarwin'snewtheorythen?A.Environmentplayedanimportantrole.B.Speciesevolvedwiththechangingenvironment.C.Differentspecieslivedindifferentenvironment.D.Themorecomplicatedthespecieswere,themoretimeittook.Think&shareWhatgoodqualitiesdoesapersonlikeDarwinshouldhave?Think&shareSpeechDiscusswithyourgroupandmakeashortspeechon“Inspirationonthe‘AJourneyofDiscovery’”.Tips:1.Youcanusethesomeinformationthatleavesyouadeepimpressioninthepassage.2.Youcantalkaboutreflection(反思)ontheshortcomingsandimprovementsinlifeorstudyafterlearningthejourneyofDarwin.3.Youcantalkaboutwhatyouhavelearntaboutthespiritofscientificexplorationandhowthisspiritcanhelpyouinyourlifeandstudy.ThefirstspirityoulearnfromDarwinistobebraveenoughtotry.Beactiveinclassactivitiesisthefirststepyoumovetowardshim.Homework:a.Polishyourspeechdraft,makeitmorelogical.b.Writeanarrativeessayaboutanotherscientist,whohasalsomadeagreatdiscovery.
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