The iproblem iof ithis iresearch iis ithe ilow ilevel iof istudents’ icreative ithinking iskills iand ithe ilack iof ivariationiand iuse iof iengaging ilearning imedia iin ithe iIndonesian ilanguage isubject iat iSD iNegeri iBaturan i1. iThisistudy iaims ito idevelop ia ilearning imedium icalled iPuzEdu i(Educational iPuzzle) ito idetermine iits ifeasibility,ipracticality, iand ieffectiveness iin iimproving ithe icreative ithinking iskills iof isecond-grade ielementary ischoolistudents. This iresearch iwas iconducted iat iSD iNegeri iBaturan i1 iwith i30 isecond-grade istudents ias itheiresearch isubjects. iThe itype iof iresearch iused iwas iResearch iand iDevelopment i(R&D) iusing ithe iADDIEimodel i(Analysis, iDesign, iDevelopment, iImplementation, iEvaluation). iData iwere icollected ithroughiobservation, iinterviews, iquestionnaires, itests, iand idocumentation. iThe idata iwere ianalyzed iusingidescriptive iquantitative itechniques iand ithe ipaired isample it-test. The iresults iof iresearch iand idevelopment ishow ithat: i(1) ithe iPuzEdu i(Educational iPuzzle) ilearningimedia iwas isuccessfully ideveloped iaccording ito istudents' ineeds, i(2) ithe ivalidation iresults ishowed ithat itheimedia iobtained ia ifeasibility ipercentage iof i87.9% ifrom imedia iexperts iand i77.7% ifrom imaterial iexpertsiwith ia ivery ifeasible icategory, i(3) ithe iresults iof ithe ipracticality itest iobtained ia ipercentage iof i100% ifromiteachers iand i89.5%–96.8% ifrom istudents iwith ia ivery ipractical icategory, iand i(4) ithe iresults iof itheieffectiveness itest iof ithe ilearning imedia iin ithe ifield itest ion ithe ipretest ishowed ian iincrease iwith ianiaverage ipretest iof i76.07 iincreasing iin ithe iaverage iposttest ivalue ito i88.46, iwith ia isignificance ivalue iofi0.000 i<0.05. iThus, ithe iPuzEdu ilearning imedia iwas ideclared ifeasible, ipractical, iand ieffective iforiimproving istudents' icreative ithinking iskills iin ithe iIndonesian iLanguage isubject iof iclass iII iof iBaturan i1iElementary iSchool.
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