五年级数学上册作业设计

五年级数学上册作业设计MathHomeworkDesignTemplateUnit6:AreaofPolygonsTheme:AreaofTrianglesRelatedCurriculumStandards:Understandtheprocessofcalculatingtheareaofatriangleandbeabletocalculateitcorrectly.LearningObjectives:1.Studentswillexploreandpracticederivingtheformulaforcalculatingtheareaofatriangle.2.Studentswillbeabletocorrectlycalculatetheareaofatriangle.Questions:1.Whatistheareaofasquare,rectangle,andparallelogram?2.Fillintheblanks:-Atrianglehas____vertices,____edges,and____angles.-Afigureformedbyconnectingthreesegmentsiscalleda____.-Aperpendicularlinefromavertextotheoppositesideiscalledthe____ofthetriangle.Thesideoppositetothevertexiscalledthe____.-Atrianglehasthe____property.Pre-ClassAssignment:3.Labelthelettersofthetrianglebelowanddrawallofitsheights.TeachingFocus:Theteachingfocusistohelpstudentsunderstandandmastertheformulaforcalculatingtheareaofatriangleandtobeabletoapplyit.TeachingDifficulties:Theteachingdifficultiesaretohelpstudentsunderstandthederivationprocessoftheformulaforcalculatingtheareaofatriangle.In-ClassAssignment:LearningObjectives:Objective1:Studentswillbeabletostatethecharacteristicsofatriangleanddrawitsheight.Objective2:Studentswillexploreandunderstandthederivationprocessoftheformulaforcalculatingtheareaofatriangle.EvaluationCriteria:Level1:Studentscanimmediatelyrecallthecharacteristicsofatriangle.Level2:Studentscannotimmediatelyrecallthecharacteristicsofatriangle.Level1:Studentscanaccuratelydrawtheheightofatriangle.Level2:Studentscandrawtheheightofatrianglewiththehelpoftheirpeers.Level3:Studentscannotdrawtheheightofatriangle.Activity1:GroupActivity-ExplorationandTransformationLevel1:Clearthinkingandfindingamethod.Level2:Canfindamethod,butthethinkingisnotclear.Level3:Cannotfindamethod.Activity2:GroupRepresentativeReportsonActivityResultsLevel1:Representativeshaveclearthinkingandclearlanguage.Level2:Representativescanexplainthemethod,buttheirlanguageisnotclear.Level3:Representativescannotexplainthemethod.Activity1:PracticeExercises-CalculationoftheAreaofaTriangleLevel1:Cancorrectlyformulatetheequationinashortamountoftime.Level2:Cancorrectlyformulatetheequationwiththehelpofpeersandcalculatetheresult.Level3:Cannotcorrectlyformulatetheequationtosolvetheproblem.Activity2:PracticeExercises-CalculationoftheCostofGlassApieceofglassisshapedlikeatrianglewithabaseof12.5metersandaheightof7.8meters.Thepricepersquaremeterofglassis68yuan.Howmuchwillitcosttobuythispieceofglass?Level1:Cancorrectlyformulatetheequationinashortamountoftime.Level2:Cancorrectlyformulatetheequationwiththehelpofpeersandcalculatetheresult.Level3:Cannotcorrectlyformulatetheequationtosolvetheproblem.Calculatetheareaofaredscarfwithabaseof100cmandaheightof33cm.一、填空(1)270平方厘米=0.027平方分米，1.4公顷=14000平方米(2)面积为0.06平方米(3)面积为56平方分米(4)平行四边形的面积为9.6平方米(5)平行四边形的面积为50平方分米，三角形的面积为37.5平方分米(6)平行四边形的高为20米，三角形的高为5米二、判断(1)正确(2)正确(3)正确(4)错误，三角形的底和高都会影响面积大小(5)正确三、解决问题这块地可以收小麦9180千克。解题过程：三角