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1、小学数学五年级下册教学反思（Thefifthgradeprimaryschoolmathematicsteachingreflection2）Thefifthgradeprimaryschoolmathematicsteachingreflection2Theteachingreflectionof"axialsymmetryfigure"Symmetryisabasicgraphictransformation,isthenecessarybasisforlearningspaceandgraphicsknowledge,tohelpstudentsestabli
2、shtheconceptofspace,cultivatethestudents'spatialimaginationhasanimportantrole.Thisbookfirstteachingmaterialsinaxialsymmetry,thearrangementofvariousformsofactivities,intheteachingofthislesson,Icombinethecharacteristicsofteachingmaterials,designthreeoperatingactivities,letstudentshands-o
3、nexperiencegraduallybasiccharacteristicsofaxialsymmetryinoperation.First,createsituationalteaching,pleasefoldtheclothesofthestudentsonstagetoshowthemethodoffoldingclothes.Thusleadstothesubject.Then,1,showaxisymmetricobjects:Tiananmen,airplane,trophy,andletstudentsobservewhattheyhaveinc
4、ommonThestudentsobservedthattheywerethesameonbothsides.2cutyoungtrees:throughdifferentshearmethods,teachersandstudentstoevaluatethatthesefiguresarethesameonbothsides,sothepaperfoldedfirst,andthencut,cutandthenspreadout,thisisasmalltree.Thisisthefirstactivityinthisclass,arrangedinthestu
5、dentsobservethesymmetryoflife,thepurposeistoletstudentsintheoperationofpreliminaryperceptionofaxisymmetricphenomenon.Thislookslikeastudentactivitytooperatingactivities,buttoasmalltreeorabeautifulwindow,nottofindthelaw,itisalsoverydifficult,throughstudentexchanges,caninitiallyperceiveth
6、esamegraphicsonbothsidescanbefoldedupandthencut,thisistheinitialperceptionofaxissymmetryfeature.Two,todraw,fold,wegetdownbelowthestudentstoseetheobjectspaintedgraphics(Tiananmen,aircraft,trophiesandothergrouping)discussion,drawtheconclusionthatthesymmetricalonbothsides,completelyoverla
7、p,sothatwhatkindofgraphicsistheaxisofsymmetry.Thisisthesecondactivityofthislesson,whichisarrangedafterthestudentshaveapreliminaryperceptionofthefeaturesoftheaxisymmetricfigures.Thestudentisoperatedwithapurpose,orientedoperation,aimedatoperatingactivitiesintheprocessofexploringgraphic
