Unit5RevealingnatureUnderstandingideas课件高中英语选择性2

外研版选择性必修一xUnit5RevealingnatureAJourneyofDiscoveryBy王艳艳LearningAims:Aftertheclass,studentscancollectusefulexpressionsaboutscientificdiscoveries；deeplyunderstandthejourneyofDarwin'ssignificantdiscovery;betterunderstandthescientificspiritofovercomingdifficultiesandboldexplorationaswellasthespiritofinnovation.Lookattheevolutionarytreeandanswerthequestions.AnevolutionarytreeLead-in1Whatspeciesdoyourecognizeinthepicture?2Whatfactorscancausetheprocessofevolution?Whatspeciesdoyourecogniseinthepicture?Anevolutionarytreealgae(藻类）

moss(苔藓）

fern(蕨类）gymnosperms(裸子植物）

angiosperm(被子植物）paramecium(草履虫-单细胞生物）jellyfish

水母腔肠动物flatworm(扁形动物）earthworm(蚯蚓-环节动物）snail蜗牛(软体动物）starfish(棘皮动物）

crab螃蟹(节肢动物）fishturtle海龟(爬行动物）frog青蛙(两栖动物)birdzebra斑马(哺乳动物）human(哺乳动物）PlantsAnimalsLookattheevolutionarytreeandanswerthequestions.Evolvelowerformsoflife

higherformsoflife

Lead-inAnevolutionarytree2Whatfactorscancausetheprocessofevolution?waterland

ForlivingplacesForlifelevels3.Whentalkingaboutevolution,whichscientistcancometoyourmind?proposedthetheoryofevolutionPublishedontheOriginofSpecies

...CharlesRobertDarwinFeb12th,1809—Apr19th,1882QuizAJourneyofDiscoveryCanyouguessthegenreofthepassage?NarrationDarwin’sinterestinvariouslivingthingsmadehimagreatnaturalist.Darwin’sjourneyontheBeagleinspiredhisTheoryofEvolution.Darwinwentonajourneytoconfirmhistheorythathumanshadevolvedovertime.Choosethemainideaofthepassageandgiveyourreasons.Pre-readingReadforthemainidea18351859Today1831Afterinorderof______timePara1Para2-5Para6-7whowhatCharlesDarwinageologistandnaturalist.fascinatedbyrocks,plantsandanimals.Howdiddifferentspeciescometoexist?collectingthingsaskinghimselfaquestion:Para

2：DuringhisjourneyReadforthedetailedinformation

studyvariouslivingthingsintheirnaturalenvironmentsVSpeopleDarwinAllspecieshadappearedonearthatthesametime,andhadnotchangedsinceAnimalsevolvedastheyadaptedto

theirchangingenvironmentsNoticedPara

3：Generateideas1.Inwhichaspectwerethesefinchesdifferent？2.Whatcausedtheirdifferences?TheirbeaksFoodavailableonthatparticularislandNoticedPara4LookformoreevidenceAcommonancestorPara5DevelopideasInitially:Gradually:Today:Para6-7ProposeatheoryAtheoryofevolutionOntheOriginofSpecieswaspublishedin1859.shocking,refusetobelieveconvencing,starttobelievegroundbreaking,transformativeIn1831In1835In1859Thepublishofthebook.lastfor28YEARSThinkandShareWhatkindofpersonwasDarwinaccordingtothepassage?Plymouth,EnglandCuriosityPerseveranceObservationAnalyticalthinkingDarwin'sabilitytoanalyzethedatahecollectedandformulatenewideasaboutevolutiondemonstratedhisstronganalyticalthinking.Open-mindednessDarwinwaswillingtoconsidernewideasandchallenge

establishedbeliefsabouttheoriginsanddevelopment

ofspecies.DedicationinnovationThinkandShareBeforethejourneyHewasnotthecaptain’s___________Hewasa____

__tohimselfandallhisfamilyHewasayoungmanwhohadleft____

__without___________.choicecompletinghisdegreemedicalschooldisgrace

onayoungmanIncommonpeople’eyesIncaptain’eyesInfamilies’eyesfirstQ:Whatarethepeople’scommentstohim?LabelsAJourneyofDiscoveryDarwin'sactualjourneyontheBeagleDarwin'sjourneytodiscoverthetheoryofevolutionPunGenerateideasstudied.../noticed...askedthequestionslookformoreevidence&developedideas:noticed.../seemed...suspected...proposedatheory:atheory/thebookstarted

his

journeythechanceto...In1831In1835In1859RetellthepassageaccordingtothecluesPlymouth,EnglandReadforretellingDiscussionHowdoyouthinkthehumanspecieswillevolveinthefuture?(changesintheenvironment,technology,socialstructures,andsoon.)

Onepossibilityisthathumansmaycontinueto

evolvephysicallytobetteradapttoour

changingenvironmentandlifestyles.

Anotherpossibilityisthathumansmayevolveculturallyandsocially,ratherthanphysically.Aswecontinuetodevelopnewformsofcommunicationandinteraction,oursocialstructuresandculturalpracticesmaychangeinwaysthatshapeourevolution.

Ultimately,thefutureofhumanevolutionisuncertain,anditisimpossibletopredictexactlyhowourspecieswillevolveinthecomingyearsandcenturies.However,itis

clearthatourevolutionwillcontinuetobeshapedbythechoiceswemakeandtheworld

wecreatearoundus.Thespirit

ofscienceScientificityPersistenceInspirationResearchIntelligenceToleranceIcansucceedinscience,themostimportantthingistheloveofscienceandinsistingon