18-高中数学选修系列2《抛物线的简单几何性质》教案1范文

作为一名测量人员，xx认真履行岗位职责，紧密配合施工，制定切实可行的的测量放线方案。保罗回忆自己年少时癿经历，丌断怃耂生命、医疗、道德不哲学乊间癿兰系，丌仅为从医考提供了新规觇，使他们对自己癿职业呾使命有更为深入癿怃耂，耄丏为读考引路，觑人们更勇敢、沉着地看待生命、死亜不未来。situation,causingthelivelihoodof100tailingsprojectmanagementprojectandSouthMiningTechnologyintwoengineeringworklag.Correctivemeasures:(LEDLeadership:LuoMingjun,rectificationtime:beforeSeptember25th,insistforalongtime)1,strictlyabidebytheparty'spoliticaldiscipline.Strictlyabidebytheconstitution,theprincipleofPartyorganizationandpartypoliticallifestandards,donotspreadagainsttheparty'stheoryandpolicyadvice,notcontrarytopublishedThecentralandprovincialPartycommitteedecidedtotalk,nottodivulgethesecretsofthepartyandthestate,donotmakenoillegalorganizationandparticipateinvariousactivities,political,spreadrumorsandfalseinformation,nottopublishlossyunityofspeech,donotdamagetheunityofthings,andneverallowindividualsabovetheorganization.2,adheretothescientificanddemocraticdecision-makingthedecisiontomakedecisions.Correctlyhandletoensurethatgovernmentdecreesandbasedontheactualcreativework,givingfullplaytosubjectiveinitiative,putanendtoimplementtheconferencemeeting,todocumenttheimplementationofdocumentsandsoon.Toimprovethescientificanddemocraticdecision-makingmechanism,improveandimplementthedecisiontosolicitopinions,experts,publichearingsandotherhealthsystem.Allmajordecisionsbeforetheriskassessmentmechanismandlegitimacyreviewmechanism.Adheretotheinterestsofthemassesandtheintentionreflectedinthepolicymakingprocessandcarryoutthework,notactingontheirbehalf,acrosstheboardandcoercion.(two)theexistenceofnegativecommunicationorunwillingtocommunicationproblemsduetomaintenancepartyteamunity.Theteammembersofthedivisionofresponsibilities,temperament,interestsDifferencesindemand,oftenleadstodifferentviews,differentopinions.Individualmembersoforganizationandcoordinationability,teamspiritisnotgood,workstyleisnotreal,simpleworkingmethods,lackofknowledgeofthewisdomofthepeople,forgivenessandartforthepeople,cannotdealwithdifferentopinions,thereareselfsweepthesnowinfrontofthedoor,allkindsofresponsibilityfields.Somemembersoftheteamdivisionofworkcoordination,lackofcoordination,asextremeliberalization,didnotformaworkforce.Inaddition,individualcadreslackofleadershiptraining,lovecommandcommunication,negativecommunication,talkintheworkdidnottaketheinitiativetotalknotcorrectThescienceteamdifferences,resolveconflicts.Correctivemeasures:(LEDLeadership:LuoMingjun,rectificationtime:beforeSeptember25th,insistforalongtime)1,tofurtherstrengthentheeducationandguidanceontheimplementationofthecentraleightprovisions,theprovincialnineprovisionsofthecountycommitteeofthetenprovisionsextensivepublicity,eliminatetheideological学科：数学教学内容：抛物线的简单几何性质【基础知识精讲】抛物线的几何性质、图形、标准方程列表如下：图形标准方程y2=2px(p＞0)y2=-2px(p＞0)x2=2py(p＞0)x2=-2py(p＞0)焦点坐标(2p,0)(-2p,0)(0,2p)(0，-2p)准线方程x=-2px=2py=-2py=2p范围x≥0x≤0y≥0y≤0对称轴x轴x轴y轴y轴顶点(0，0)(0，0)(0，0)(0，0)离心率e=1e=1e=1e=1焦半径｜PF｜=x0+2p｜PF｜=2p-x0｜PF｜=2p+y0｜PF｜=2p-y0参数p的几何意义参数p表示焦点到准线的距离，p越大，开口越阔.本节学习要求：1.抛物线方程的确定，先由几何性质确定抛物线的标准方程，再用待定系数法求其方程.2.解决有抛物线的弦中点问题及弦长问题与椭圆、双曲线一样，利用弦长公式、韦达定理、中点坐标公式及判别式解决.3.抛物线中有关轨迹与证明问题也与前面内容一样.常用方法有轨迹法、代入法、定义法.参数法等.证明的方法是解析法.通过学习本节内容，更进一步培养我们学习数学的兴趣，培养良好的思维品质.运用数形结合的思想方法解决问题，提高分析问题和解决的能力.【重点难点解析】1.抛物线的几何性质和椭圆、双曲线比较起来，差别较大，它的离心率等于1；它只有一个焦点、一个顶点、一条对称轴、一条准线；它没有中心.通常称抛物线为无心圆锥曲线，作为一名测量人员，xx认真履行岗位职责，紧密配合施工，制定切实可行的的测量放线方案。保罗回忆自己年少时癿经历，丌断怃耂生命、医疗、道德不哲学乊间癿兰系，丌仅为从医考提供了新规觇，使他们对自己癿职业呾使命有更为深入癿怃耂，耄丏为读考引路，觑人们更勇敢、沉着地看待生命、死亜不未来。situation,causingthelivelihoodof100tailingsprojectmanagementprojectandSouthMiningTechnologyintwoengineeringworklag.Correctivemeasures:(LEDLeadership:LuoMingjun,rectificationtime:beforeSeptember25th,insistforalongtime)1,strictlyabidebytheparty'spoliticaldiscipline.Strictlyabidebytheconstitution,theprincipleofPartyorganizationandpartypoliticallifestandards,donotspreadagainsttheparty'stheoryandpolicyadvice,notcontrarytopublishedThecentralandprovincialPartycommitteedecidedtotalk,nottodivulgethesecretsofthepartyandthestate,donotmakenoillegalorganizationandparticipateinvariousactivities,political,spreadrumorsandfalseinformation,nottopublishlossyunityofspeech,donotdamagetheunityofthings,andneverallowindividualsabovetheorganization.2,adheretothescientificanddemocraticdecision-makingthedecisiontomakedecisions.Correctlyhandletoensurethatgovernmentdecreesandbasedontheactualcreativework,givingfullplaytosubjectiveinitiative,putanendtoimplementtheconferencemeeting,todocumenttheimplementationofdocumentsandsoon.Toimprovethescientificanddemocraticdecision-makingmechanism,improveandimplementthedecisiontosolicitopinions,experts,publichearingsandotherhealthsystem.Allmajordecisionsbeforetheriskassessmentmechanismandlegitimacyreviewmechanism.Adheretotheinterestsofthemassesandtheintentionreflectedinthepolicymakingprocessandcarryoutthework,notactingontheirbehalf,acrosstheboardandcoercion.(two)theexistenceofnegativecommunicationorunwillingtocommunicationproblemsduetomaintenancepartyteamunity.Theteammembersofthedivisionofresponsibilities,temperament,interestsDifferencesindemand,oftenleadstodifferentviews,dif