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在本省行政区域内从事草原保护、管理、建设和利用以及承包经营等活动,适用本条例。本条例所称草原,是指具有草原生态功能或者适用于畜牧业生产的天然草原和人工草地。天然草原包括草地、草山和草坡,人工草地包括改良草地和退耕还草地。appearanceoftheweldappearancequalitytechnicalrequirementsoftheprojectmustnothaveamoltenmetalstreamdoesnotmeltthebasemetaltoweld,weldseamandheat-affectedzonesurfacemustnothavecracks,pores,defectssuchascraterandash,surfacesmoothing,weldandbasemetalshouldbeevenlysmoothtransition.Width2-3mmfromtheedgeofweldGroove.Surfacereinforcementshouldbelessthanorequalto1+0.2timestheslopeedgewidth,andshouldnotbegreaterthan4mm.Depthofundercutshouldbelessthanorequalto0.5mm,totallengthoftheweldsonbothsidesundercutnotexceed10%oftheweldlength,andlongcontinuousshouldnotbegreaterthan100mm.Wrongsideshouldbelessthanorat0.2T,andshouldnotbegreaterthan2mm(wallthicknessmmt)incompleteornotallow7.57.5.1installationqualityprocessstandardsoftheelectricalenclosureCabinetsurfaceisclean,neat,nosignificantphenomenonofconvex,closetonature,closethedoor.7.5.2CabinetCabinetfacepaintsnopaint,returnedtorusted,consistentcolor.7.5.3uniformindirectgapfromtoptobottom,slotwidth1.5mm7.5.4adjacentCabinetsurfaceroughnessis0.7.5.5thecabinetsfirmlyfixed,craftsbeautiful.7.5.6Cabinetsurfacegauge,switchcabinetmarkclear,neat,firmpaste.7.5.7Terminalrowofneat,isreliable,theappearanceiscleanandnotdamaged.7.5.8cablesneatandclean,solidbinding,bindingprocessinappearance.7.5.9thefirstcableproductionfirm,craftsbeautiful,clearsignagedoesnotfade.7.5.10fireproofpluggingtight,nocracksandpores.7.67.6.1ofthestandardelectricalwiringqualitytechnologycablea,themulti-corewirebuncharrangementshouldbeparalleltoeachother,horizontalwireharnessorwireshouldbeperpendiculartothelongitudinalmulti-corewirebunch.Thedistancebetweenthewireharnessandwireharnesssymmetry,andascloseaspossible.B-corewiringharnessintoround,multi-corewirebunchusedgwirebinding,fastening纯化教委集体备课记录单元备课计划单元名称三、扬帆奥运——三位数乘两位数教学目标1、在解决实际问题的过程中,学习两位数乘一位数、整百数乘整十数的口算以及三位数乘两位数的估算和笔算,并能正确熟练的进行口算、估算和笔算;在具体情境中,探索积的变化规律,理解四则混合运算的顺序并能进行三步的四则混合运算。2、在发现、提出并解决三位数乘两位数计算问题的过程中,逐渐培养学生提出问题、解决问题的能力,体验解决问题策略的多样性。3、在解决现实问题的过程中,体会三位数乘两位数及混合运算在生活中的作用,发展应用意识;通过自主探索、合作交流,获得成功的体验。知识结构及课时分配本单元共有5个信息窗:信息窗1:两位数乘一位数(进位)的口算、整百数乘整十数的口算;信息窗2:三位数乘两位数的估算;信息窗3:三位数乘两位数的笔算、一个因数末尾有零的三位数乘两位数的笔算;信息窗4:积的变化规律;信息窗5:可同时脱式的三步混合运算、带小括号的三步混合运算、相遇问题。本单元建议课时数:15课时。学情分析本单元两个班的达标率是100%,四年级一班的优秀率是74.3%,四年级二班的优秀率是76.5%。从卷面来看,学生对基础知识掌握得很扎实,能够灵活运用所学的知识解答相应的实际问题。但也反映出一定的不足:①混合运算的正确率较低;②估算掌握得不太好,不能迅速找出规律;③在解答实际问题时,个别学生不会分析题意,有针对性地找到解答问题的信息。教学设想在今后的教学中,加强混合运算的练习,个别学生需要单独辅导,注重学生审题能力和解决实际问题能力的培养,注重学生在生活中的应用意识。在本省行政区域内从事草原保护、管理、建设和利用以及承包经营等活动,适用本条例。本条例所称草原,是指具有草原生态功能或者适用于畜牧业生产的天然草原和人工草地。天然草原包括草地、草山和草坡,人工草地包括改良草地和退耕还草地。appearanceoftheweldappearancequalitytechnicalrequirementsoftheprojectmustnothaveamoltenmetalstreamdoesnotmeltthebasemetaltoweld,weldseamandheat-affectedzonesurfacemustnothavecracks,pores,defectssuchascraterandash,surfacesmoothing,weldandbasemetalshouldbeevenlysmoothtransition.Width2-3mmfromtheedgeofweldGroove.Surfacereinforcementshouldbelessthanorequalto1+0.2timestheslopeedgewidth,andshouldnotbegreaterthan4mm.Depthofundercutshouldbelessthanorequalto0.5mm,totallengthoftheweldsonbothsidesundercutnotexceed10%oftheweldlength,andlongcontinuousshouldnotbegreaterthan100mm.Wrongsideshouldbelessthanorat0.2T,andshouldnotbegreaterthan2mm(wallthicknessmmt)incompleteornotallow7.57.5.1installationqualityprocessstandardsoftheelectricalenclosureCabinetsurfaceisclean,neat,nosignificantphenomenonofconvex,closetonature,closethedoor.7.5.2CabinetCabinetfacepaintsnopaint,returnedtorusted,consistentcolor.7.5.3uniformindirectgapfromtoptobottom,slotwidth1.5mm7.5.4adjacentCabinetsurfaceroughnessis0.7.5.5thecabinetsfirmlyfixed,craftsbeautiful.7.5.6Cabinetsurfacegauge,switchcabinetmarkclear,neat,firmpaste.7.5.7Terminalrowofneat,isreliable,theappearanceiscleanandnotdamaged.7.5.8cablesneatandclean,solidbinding,bindingprocessinappearance.7.5.9thefirstcableproductionfirm,craftsbeautiful,clearsignagedoesnotfade.7.5.10fireproofpluggingtight,nocracksandpores.7.67.6.1ofthestandardelectricalwiringqualitytechnologycablea,themulti-corewirebuncharrangementshouldbeparalleltoeachother,horizontalwireharnessorwireshouldbeperpendiculartothelongitudinalmulti-corewirebunch.Thedistancebetweenthewireharnessandwireharnesssymmetry,andascloseaspossible.B-corewiringharnessintoround,multi-corewirebunchusedgwirebinding,fastening2纯化教委集体备课记录课时备课年级四年级科目数学第周星期备课内容两位数乘一位数的口算(第一课时)主备刘蕾辅备目标在解决实际问题的过程中,学习两位数乘一位数、整百数乘整十数的口算,并能正确熟练地进行口算。在发现、提出并解决问题的过程中,逐步培养学生提出问题、解决问题的能力,体验解决问题策略的多样性。重点学习两位数乘一位数、整百数乘整十数的口算,并能正确熟练地进行口算。难点体验解决问题策略的多样性。教法新授学法小组合作讨论教学过程主备辅备一、复习两位数乘一位数(不进位)、整百数乘一位及整十数乘整十数的口算:21×380×340×3042×2800×380×30口算出得数,说一说口算的方法,重点说一说整拾数乘整拾数时写得数时要注意的地方。二、探索新知学生观察信息窗1,说一说都知道也哪些数学信息。解决这个问题需要哪条数学信息?指生:已经工作了解3个月,平均每月挖出18吨淤泥。指生列式:18×3=(万吨)四人小组讨论口算方法及结果。在本省行政区域内从事草原保护、管理、建设和利用以及承包经营等活动,适用本条例。本条例所称草原,是指具有草原生态功能或者适用于畜牧业生产的天然草原和人工草地。天然草原包括草地、草山和草坡,人工草地包括改良草地和退耕还草地。appearanceoftheweldappearancequalitytechnicalrequirementsoftheprojectmustnothaveamoltenmetalstreamdoesnotmeltthebasemetaltoweld,weldseamandheat-affectedzonesurfacemustnotha
本文标题:青岛版四年级上册第三单元教案全
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