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高中英语词汇合作学习研究 CooperativeLearningandVocabularyAcquisitioninHighSchoolEnglishEducation Introduction VocabularyacquisitioniscrucialtothedevelopmentofEnglishlanguageproficiencyforhighschoolstudents.Inordertoacquireandmasteralargenumberofwords,studentsmusthaveeffectivelearningstrategiesthatcomplementtheirindividualabilities.Cooperativelearning,asawell-establishedteachingapproach,hasbeendemonstratedtobeausefulmethodofpromotinglearningandinvolvementamonghighschoollearners.ThispaperaimstoexploretheeffectivenessofcooperativelearninginEnglishvocabularyacquisitioninhighschool. TheoreticalFramework Cooperativelearningisgroundedinseveraltheories,includingthesocialinterdependencetheory,thecognitiveelaborationtheory,andthemotivationaltheory(Johnson,Johnson,&Smith,1991).Thesetheoriescenteraroundthenotionthatourlearningexperiencesareamplifiedwhenweinteractwithothers.Incooperativelearning,studentsworktogetherinsmallgroupstocompleteasharedtask.Eachmemberofthegroupisresponsibleforcontributingtothesuccessofthegroup,whichpromotesmutualaccountability,peersupport,andsharedlearningexperiences. Vocabularyacquisitionhasbeenshowntobemosteffectivewhenitiscontextualizedwithinmeaningfulandmemorableinteractions(Nation,2001).Essentially,studentsmustbeactivelyengagedinacquiringnewvocabularyusingcontextualizedandmeaningfulstrategies.Cooperativelearningcanprovideanenrichinglearningenvironmentbyprovidingopportunitiesforstudentstointeractwithoneanotherandtomakesharedmeaningoutofnewwords. Methods Thepresentstudyinvestigatedtherelationshipbetweencooperativelearningandvocabularyacquisitioninhighschool.Aheterogeneoussampleof100highschoolstudentsfromapublicschoolintheUnitedStateswasrecruitedforthestudy.Participantswererandomlyassignedtoeitheranexperimentalgroup(n=50)oracontrolgroup(n=50).Thecontrolgroupreceivedtraditionalclassroominstruction,whiletheexperimentalgroupreceivedcooperativelearningactivitiesinsmallgroups. Thevocabularytestwasconductedatthebeginningandendofthefour-weekintervention.Thetestconsisted

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