about teaching high school chemistry problem-based learning（教高中化学问题式学习）

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HEUNDERSTANDINGOFTHEPROBLEM,ANALYZEPROBLEMSANDPROBLEMSOLVINGSKILLSWHILEFOCUSINGONINDEPENDENTLEARNING,COOPERATIVELEARNINGABILITIESPROCESSBUTPRACTICEPROBLEMBASEDLEARNINGMETHODFOUNDININDIVIDUALSTUDENTSNOTSUITEDTOPROBLEMBASEDLEARNING,ACTIVELEARNINGTECHNIQUESLACKTHELOSSOFSTUDENTSOUTSIDETHEWAYSANDMEANSLACKOFACCESSTOLEARNINGMATERIALS,COMBINEDWITHTHEHIGHSCHOOLSTUDENTSFACEENORMOUSPRESSUREOFTHEIRSTUDIES,DONOTWANTTOSPENDTOOMUCHTIMEONTHEISSUEINDEPTHEXPLORETHATPBLTROUBLESOMESTUDENTSACCOUNTEDFOR9552OFTHERESPONDENTS,ACCOUNTEDFOR9254PERCENTOFTHERESPONDENTSTHINKTHATTHESTUDENTSOFTHEPBLTIMECONSUMING,THESEFACTORSHAVEAFFECTEDTHEIMPLEMENTATIONOFPROBLEMBASEDLEARNINGMETHODINORDERTOMINIMIZETHEIMPACTOFADVERSEFACTORSEXTENDEDGOODPROBLEMBASEDLEARNINGMETHOD,ASAFACILITATOROFSTUDENTDEVELOPMENT,GUIDANCE,LEARNERS,TEACHERSANDCOLLABORATORSSHOULDBEMADEFROMTHEFOLLOWINGEFFORTS1CAREFULLYSETTHEPROBLEMISTHECOREOFTHEPROBLEMBASEDLEARNINGMETHOD,HIGHQUALITYCHEMICALPROBLEMSSHOULDBECLOSELYLINKEDTOTHETEACHINGOBJECTIVES,TOADAPTTOTHELEVELOFSTUDENTSKNOWLEDGE,COGNITIVESTRUCTURECLOSETOTHEREALITYOFLIFEWITHOPENNESSANDFLEXIBILITY,THEANSWERSHOULDBECLEARFOCUSONTHEEMOTIONALEXPERIENCEOFSTUDENTS,ALLOWSALLSTUDENTSCANEXPERIENCE,EXPLORESOMEOFTHEPROBLEMHASINCREASEDTHEREFORE,TEACHERSSHOULDCONSCIENTIOUSLYSTUDYMATERIALS,BASEDONSKILLEDCONTROLOFTEXTBOOKSANDDETAILEDUNDERSTANDINGOFTHELEVELOFSTUDENTSKNOWLEDGE2CAREFULLYPREPAREDINFORMATIONPROBLEMBASEDLEARNINGSETTINGSMUSTBEDERIVEDFROMTHETEACHINGMATERIALSANDHIGHERTHANTEXTBOOKS,LITERATUREISINDISPENSABLELEARNINGTOOLTOSOLVETHEPROBLEM,HOWEVER,THEHIGHSCHOOLSTUDENTSFORCEDBYTHEPRESSUREOFTIME,ITISIMPOSSIBLETOACCESSTOTOOMUCHINFORMATION,ANDTHEORDINARYHIGHSCHOOLLITERATURECANPROVIDEACCESSTOVARIOUSCURRICULUMSTOSTUDENTS,ACCESSTOTOOLSSUCHASCOMPUTERSANDSOISVERYLIMITED,TEACHERSSHOULDBEWELLPREPAREDFORTHESTUDENTSTOSOMEUSEFULINFORMATIONAVAILABLETOSTUDENTSTOINSPECT,TOPLAYAMULTIPLIEREFFECT3CAREFULLYGUIDETHESTUDENTSAPROBLEMBASEDL