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1、5.1《质量及其测量》说课材料（5.1qualityandmeasurementmaterials)5.1"qualityandmeasurement"lessonmaterialFirst,teachingmaterialsThemaincontentsofthissectionincludetheconceptofquality,unitsandlaboratoriescommonlyusedtraybalancesCorrectusemethod・Thequalityofstudcnts，understandingisoneofthebasicphysicalquantitiesof
2、varioussubstancesmusthavethecorrectuseofthebalanceisthemostbasicexperimentalskills,isanindispensableresearchmaterialproperties一densityandotherrelatedcontent,forthefurtherstudyofphysicsknowledgepreparationplaysanimportantrole・1,tcachingmaterialanalysis:theconceptofqualityisanimportantbasicconceptin
3、physics,butinjuniorhighschoolDonotasktoodeeptocxplain,onlyrequiresstudentstoknow,sointhetextbookdirectlygivestheconceptandnamcofthesymbolmforquality,qualityisanattributeoftheobjectitself,thetextbookisillustratedbypictures,presentedintheformofthisknowledgehasnothingtodowiththequalityofstudents，comp
4、rehensionoftheobjectobjecttheshapeandpositionofthestateandthechangeof.Thequalityofthemeasuringinstrumentsofobjects,thedailylifeofstudentsa1otofexperienee,istheinstrumenttraybalaneelaboratorymeasurementqualitycommonlyused,properuseofitisthekeysectionoflearning,studenlsmustknowtheuseandadjustmentmet
5、hodsandprecautions・1,teachingaim:accordingtotheactuallevelofknowledgeinthissectionthecontentofteachingmaterialsandstudents,accordingtoteachingguidelinestodeterminetheteachingaimis:understanding,apreliminaryunderstandingoftheconceptofquality,knowthequalityoftheunitsandconversion;thecorrectuseofthet
6、raybalancequalitylevel;morespecificconceptofqualitycommonobjects・Technicalgoal:totrainstudents'logicalthinkingabilityandtotrainstudents，abilityofusingknowledgetosolvepracticalproblems・Emotionalgoals:experiencethevalueofnaturalscience,experienceknowledgederivedfrompracticeandactonthedialecticalrela
7、tionshipbetweenpractice・2,teachingkeypointsanddifficulties:Unitofmassanditsproperties・Mastertheuseoftraybalance.Two,sayteachingmethodandlearningmethod1.methods:accordingtothecontentofthematerialinthissection,acco
