资源描述：
《观察物体教案（observation object lesson plan）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、观察物体教案（Observationobjectlessonplan）Observetheobject(two)(2009-12-2210:46:32)-symmetricreprintlabels:Classification:onteachingnotesThestudentsarefamiliarwiththetextbookfromtheperspectiveofdailylife,withexamples,throughobservation,operationandotherformsofactivities,le
2、tstudentsperceivesymmetryphenomenoninlife,understandingofaxissymmetrysimple,axisymmetriccharacteristicsfurtherstudysimplegraphics,grasptherelationshipbetweentheaxialsymmetryofsimplegraphics,andtheuseofaxialsymmetrymethodtotransformordesigntolayagoodfoundation.Thefir
3、sttextbookexamplesfirstshowagroupofpictures,studentsarerequiredtoobserveandtalkabouttheircommonfeatures,primaryperception"theseobjectsaresymmetrical,andaskthestudentstocombinetheirlifeexperiencesandthenfindoutsomesymmetricalfeaturesoftheobjects,theexchangeinthegroup
4、.Themainpurposeofthearrangementistohelpstudentsfeelthesymmetryintheirlives.Next,thetextbookabstractsthephysicalfiguresaboveintoplanefigures,andguidesthestudentstodiscoverthebasicfeaturesoftheaxisymmetricfiguresbyfolding,andtodescribetheconceptoftheaxialsymmetry.Thes
5、econdexampleallowsstudentstomakeuseoftheexistinginitialknowledgeofaxisymmetricpatternsandmakeaxisymmetricfiguresindifferentmaterialsandways.Activitiestohelpstudentsfurtheraccumulationofperceptualknowledge,enrichtheexperienceofaxisymmetricgraphics,exercisestudents'pr
6、acticalability.Theexercisesarearrangedinvariousformsandrichcontentstohelpthestudentsdeepentheirunderstandingoftheaxialsymmetryandrealizetheextensiveconnectionsbetweenmathematicsandlife.Idesignedthisclass(completedinseveralhours):1.atthebeginningofclass,Ifirstshowana
7、symmetricfacegraphicstoallowstudentstoobserve,throughtheobservationthat:theeyesarenotasbig,onbothsidesofthemouthiscrooked,asymmetry,foundthisisnotgood.ThenIaskedthestudents,"howdoesthepicturelookgood?"Thestudentreplied,"eyesshouldbethesamesize,andthemouthshouldbepai
8、ntedright.".ThenIshowedyouastandardsmileyfacepatternthatallowsstudentstointuitivelyperceivethemeaningofsymmetry.2.,thehumanbody,forexample
