A Sample Lesson Plan upon Geometry-

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1、HydeParkHighSchoolTeacherLessonPlanGrades:10&11Content:Geometry(SectionH3)Mr.Prospere,Mr.Erilus,Mr.CoriolanRationale/BackgroundForthepasttwoweeks,10thand11thgradestudentshavebeenstudyingareasofparallelograms,areasoftriangles,trapezoidsandrhombiintheirgeomet

2、ryclass.Thislessonbuildsfrompreviouslessonandisgearedtowardhelpingstudentsdevelopandapplynewgeometryconcepts.Thestudentshavealreadymasteredcertainconceptssuchastriangle,quadrilateral,polygon,etc.inthislesson,theywilllearnhowtofindtheareaofregularpolygon,acon

3、ceptrelatedtoMCASstandards.Contentobjectives:Attheendofthislesson,studentwillbeableto:a)findtheareaofaregularpolygonb)…altitudeofarighttriangleanditsareaformula.LanguageObjectives:Attheendofthislesson,studentwillbeableto:a)describehowtofindtheareaofaregularp

4、olygonb)writeandaddnewtermsintheirvocabularybuilderworksheetsc)Defineorallythetheorem:AreaofaregularPolygonMaterials:PaperCompassRulerProtractorStraightedgeTextbook:GlencoeGeometry(SectionH3)-Chapter11-3:areasofregularPolygonsStartup/Motivation:Describethedi

5、fferencebetweenaregularandirregularpolygon.VocabularyApothemPolygonIrregularPolygonCongruentIsoscelesVertexRadiusHexagonAltitudeBuildingBackgroundKnowledgeBasedonthestudents’PriorKnowledge,theycandefineandrecognizethefollowing:DefinitionofaregularpolygonReco

6、gnizingcharacteristicsofregularpolygonsSpecialRightTriangles(450-450-900&300-600-900)DefinethewordapothemtothestudentsAregularpolygoncanbedividedintocongruentisoscelestrianglesbydrawingalinefromeachvertextothecenterofthepolygon.Thealtitudeofoneofthesetriangl

7、esiscalledapothem.Theareaofthepolygoncanbedeterminedbyaddingtheareasofthetriangles.StrategiesHavestudentsidentifyfromthefigurethecenterofthecircle,theradiusofthecircle,theapothemofthepolygonandthesidesofthepolygon.Letarepresentthelengthoftheapothemandsrepres

8、entthelengthofasideofthehexagonsincetheapothemisperpendiculartoasideofoneofthesixcongruenttriangle.Askstudentshowtofindtheareaofthetriangle.Havethemwritetheformula(continued…)Areaofoneofthetrian