杨丽论文
论文(行知小学杨丽)

小学数学综合实践教学与信息技术的整合西宁市城西区行知小学杨丽邮编 810008 电话 4399234【摘要】随着素质教育的推进和教育信息化的不断发展,信息技术与学科教学的整合,是当前我国整个教育信息化进程中的一个热点问题,是我国面向二十一世纪基础教育教学改革的新视点。
在高度信息化的时代,新的教学观认为教学具有多方面的功能,它既要传授知识,又要发展学习者的多种能力。
如学习能力、信息处理技术、发现问题和解决问题的能力,也就是我们不仅要传道授业,还要着力培养学生运用信息工具获取、处理、应用、生成、创造信息的能力,因此,进行信息技术与学科教学的整合是最好的途径。
【关键词】信息技术教育课程整合信息技术为学生提供了丰富的信息资源,使数学教学内容得以跳出封闭的教材,扩展到现实生活的方方面面,为学生学习数学知识创设了广阔的智力背景,使得构建立体化、多样化、信息化的数学大教材成为可能。
发挥信息技术的优势,向学生提供更为丰富的学习资源,突破时空的限制,直观形象地反映客观事物,充分展示知识的形成过程,从而客观揭示知识的本质特征以及知识点之间的内在联系,使抽象的内容具体化,调动学生主动学习的积极性,让学生更好地掌握知识,形成技能,培养良好的思维品质,正确的价值观及对数学的情感与态度。
那么,该如何实现信息技术与小学数学学科的整合呢?本文就信息技术与小学数学学科整合的研究与实践,作一些初步的探讨。
一、信息技术与小学数学学科教学内容的整合新课程标准提出“数学要贴进生活”、“数学问题生活化”,事实上,学生也更容易理解和掌握他们有一定生活基础的数学知识,并且对此更感兴趣。
然而由于客观条件的制约,现行的小数教材教学内容明显偏旧,落后于时代的发展。
而当今世界上最鲜活的、具有明显时代特征的数学学科教学素材和教学内容,很难及时在教材中反映出来。
这在统计知识方面表现得尤为明显,在教材很多地方还经常出现九十年代(甚至更久远)统计的信息。
因此,数学学习材料的选择应注意联系学生生活实际,注重实效性。
杨丽论文教学文档

试论教育评价对被评价者心理的影响甘肃省武威市天祝藏族自治县安远镇初级中学杨丽【内容摘要】评价是大量存在于人们日常生活和社会生活中的一种认识活动。
在社会生活和日常生活中,人们同各种各样的事物打交道,发生着各种各样的联系,而人们总是根据自己的需要和一定的标准作出某物是好是坏,是善还是恶,是美还是丑的判断,用以指导自己行为,达到取利弊害的目的。
这个活动过程,不管是自觉的还是不自觉的,都是对事物的评价,即对事物作出价值判断。
而教育评价作为一门科学,它同一切科学一样,有其特定的研究对象。
教育科学群的各门学科都是以人类社会所特有的教育现象为研究对象的。
这是教育科学群同其他门类科学最根本的区别。
在教育评价的整个过程中,都有评价者和被评价者的心理活动积极参与,是评价者和被评价者的综合心理活动过程。
期间,既有主体与客体的互动过程,又有主体与主体,客体与客体的相互影响。
评价过程中诸心理因素的和谐运动,是教育评价达到客观,可靠,准确及获得正效应的保证。
但由于教育评价是人主观选择的活动,虽然评价的依据是客观事实,但事实的获得和价值判断但事实的获得和价值判断必定会受到评价者心理状态的影响,同时在评价过程中,被评价者由于受到心理因素的影响常常会出现“失真”的情况,从而导致评价结果不准确。
因此,在教育评价实施过程中,无论是评价者的心理调控还是被评价者的心理调控,都成为保证教育评价科学性和可靠性的不可忽视的问题。
而了解评价过程中评价双方容易产生的心理现象及其产生的原因,又是进行心理调控的前提。
在评价过程中,评价者有时用肯定评价,有时用否定评价,以此来调动被评价者的积极性。
因此,无论是肯定评价还是否定评价,都会对被评价者的心里产生不同程度的影响。
教育评价本身不是目的,而是要通过评价激发被评价者做好工作的动机,提高教育实践活动的质量。
在他人评价过程中,评价者有时用肯定评价有时用否定评价,以此来调动被评者的积极性。
那么,无论是肯定评价还是否定评价,都会对被评者的心理产生不同程度的影响。
阻燃纤维及应用_杨丽

杨丽,杨俊玲(天津工业大学材料化工学院,天津300160)摘要:介绍了研究阻燃纤维的意义、目前阻燃纤维的品种和特种阻燃纤维(偏氯纶和腈氯纶及维氯纶)的性能、用途,并对常见的阻燃涤纶及其阻燃剂进行了表述.关键词:阻燃;纤维;纺织品;应用中图分类号:TQ314.24+8文献标识码:A文章编号:1004-0439(2006)09-0005-03阻燃纤维及应用Flame-retardantfibersandtheirapplicationsYANGLi,YANGJun-ling(Mater.Chem.Eng.Inst.,TianjinPolytechn.Univ.,Tianjin300160,China)Abstract:Thesignificanceoftheflame-retardantfiberresearchesandtheexistentproducts,theproper-tiesandusesofthespecialflame-retardantfiberssuchasvinylchloride-vinylidenechloridecopolymer,acryloni-trile-vinylidenechloridecopolymerandpoly(vinylalcohol-vinylidenechloride)arepresented,andthecommonflame-retardantfibersandflame-retardantagentsaresummarized.Keywords:flameretardant;fibers;textiles;applications收稿日期:2006-01-16作者简介:杨丽(1969-),女,天津市人,实验师,主要从事染整工艺的应用.天然或合成纤维,由于其化学结构的不同其燃烧性亦不一,按燃烧时引燃程度、燃烧速度、息燃性等特征,可将纤维定性地分为阻燃纤维和非阻燃纤维两大类.其中,不燃纤维和难燃纤维属阻燃纤维,可燃纤维和易燃纤维属非阻燃纤维.目前国际上广泛采用限氧指数LOI(LimitOxygenIndex)来表征纤维及其制品的可燃性.限氧指数LOI是指材料点燃后在氧-氮大气里维持燃烧所需要的最低含氧量体积分数.限氧指数LOI值越大,材料燃烧时所需氧的浓度越高,即越难燃烧.通常空气中氧气的体积分数接近20%,所以纤维也可按LOI值分类,将LOI值低于20%称为易燃纤维,20% ̄27%的称为阻燃纤维.[1]为了减少易燃物质的可燃性,约200年前,盖・吕萨克(GayLussac)便研究过生产阻燃织物的可能性.20世纪60年代以前,研究工作重点是粘胶织物的阻燃.开发阻燃合成纤维是近20年的事.因为某些合成纤维在遇火时会熔融收缩而使纤维离开火焰,所以锦纶的阻燃问题一直没有得到重视.后来大量合成纤维同粘胶纤维混纺成织物时,因粘胶纤维易燃,并在织物中有“网格支架”的作用,增加了混纺织物的可燃性.因此,阻燃纤维的研制变得更加重要.随着城市现代化建设的发展,对纺织品的难燃化要求也越来越高.美国曾作过统计,1971 ̄1975年,美国有人伤亡的火灾中,90%以上是住宅火灾,且最初着火物主要是纺织品.近年来,美、英、日、德等国对纺织纤维的阻燃已用法律的形式作了规定,要求凡是制作儿童、老人、残废者的服装,室内铺饰用布,剧院幕布以及交通运输工具和旅馆内使用的纺织材料,炼钢工人及士兵的制服等均需达到一定的阻燃要求.因各种纤维的阻燃性差别很大,同一种纤维的命名亦不同,为了不造成概念上的混乱,采用极限氧指数(LOI)为依据的分类法.表示式如下:对于状态相近的物质来说,氧指数越高,表示在LOI=O2/(O2+N2)×100%印染助剂TEXTILEAUXILIARIESVol.23No.9Sep.2006第23卷第9期2006年9月印染助剂23卷空气中越不容易燃烧,即该物质的阻燃性能越好.[2]这种分类见表1.[3]1偏氯纶偏氯纶亦称偏二氯乙烯纤维,为氯乙烯-偏二氯乙烯的共聚物,其中含氯乙烯30% ̄10%,偏二氯乙烯70% ̄90%,在美国的商品名称为Saran,1940年便实现了工业化生产.[4]偏氯纶聚合物在纺丝时加入少量的液态卤代苯等软化剂以及热稳定剂,用熔纺法纺入空气中,进入冷水(10℃)浴槽冷却,再经过拉伸卷绕即得成品丝.偏氯纶可用熔纺法纺制成鬃丝,也能制得短纤维和长丝.偏氯纶的强度较低,密度达1.70,但具有较好的阻燃性、耐热性和回弹性,还有较高的耐磨性、良好的抗霉和抗腐烂性.65℃以下,在空气中是稳定的,长期太阳光作用下纤维稍变暗;偏氯纶不吸湿,在水中不膨胀,75℃以下能保持满意的机械强度;耐浓酸腐蚀性虽不及氯纶,但在化学纤维中亦可称佼佼者.偏氯纶常用作滤布,对有腐蚀性的液体或气体物质过滤尤为合适.用作鞋垫既能透气,又能保持热量.还能用作纱窗、刷子、手套、袜子、绳缆、捕鱼用具等.偏氯纶的阻燃性突出,可用作车厢中的坐垫材料、沙发套、地毯、防火帘、护林工人制服等.[5]2腈氯纶和阻燃腈纶腈氯纶又称改性腈纶,其纤维大分子链中含35% ̄85%的丙烯腈链节.而阻燃腈纶中的丙烯腈链节量大于85%.阻燃腈纶包括丙烯腈-偏二氯乙烯和丙烯腈-氯乙烯2种共聚纤维.[6]2.1性能腈氯纶原料来源充足,成本低廉,单纤维间有较大的静电,在加工、穿着过程中无擀毡现象,能一直保持蓬松,适宜制造人造毛皮等起毛织物.因阻燃性能好,又适合制造室内铺饰织物.腈氯纶和阻燃腈纶的物理性质、耐候性及染色性类似普通腈纶,而阻燃性、耐化学药品等性能又类似于氯纶.所以,它与多种纤维混纺不会造成染色困难而使织物品质降低,还能赋予织物阻燃性.[7]2.2用途根据人造毛皮加工工艺和毛皮风格的要求,腈氯纶最适合制造人造毛皮,与天然兽皮相比,价廉、兽毛感强、仿天然皮毛形象逼真、质轻、保暖性好.在腈氯纶长毛绒产品中,以仿貂皮、獭皮、狐皮、黄狼皮、灰鼠皮等较为流行,阻燃长毛绒玩具也颇受消费者的青睐,腈氯纶和阻燃腈纶编织物主要用于衣着领域.[8]3维氯纶该纤维于1968年在日本试制成功,定名为SE纤维.化学名是聚乙烯醇-氯乙烯接枝共聚纤维,商品名称叫Cordelan,我国称作维氯纶.目前仅日本兴人公司生产,在美国十分畅销,被认为是一种有发展前途的阻燃纤维.[9]据报道,维氯纶制造方法十分特殊,先在低分子质量聚乙烯醇的水溶液中加入引发剂和氯乙烯单体,使氯乙烯在聚乙烯醇上发生接枝共聚.得到外观为青蓝色的半透明乳状液,随后再混以适量常规聚乙烯醇的水溶液增稠,并经湿法纺丝得到初生纤维,再经拉伸、热处理和缩醛化等加工获得成品纤维.3.1性能①维氯纶的物理性能介于维纶和氯纶之间,软化温度约180 ̄200℃,沸水收缩率在5%左右,手感柔软,白度较好,耐磨性、回弹性以及抗静电性能均属优良;②维氯纶的极限氧指数(LOI)比腈氯纶高,比氯纶稍表1纤维燃烧性的分类纤维名称纤维品种举例LOI/(%)不燃纤维石棉玻璃纤维粘胶纤维17 ̄19棉17 ̄19腈纶18 ̄20丙纶18 ̄20可燃纤维涤纶20 ̄22锦纶20 ̄22阻燃腈纶27 ̄32阻燃丙纶27 ̄31腈氯纶26 ̄31阻燃涤纶28 ̄32聚氯乙烯纤维(氯纶)35 ̄37维氯纶30 ̄33酚醛纤维32 ̄34阻燃纤维聚偏二氯乙烯纤维(偏氯纶)45 ̄48以金属纤维为代表的无机纤维耐热纤维聚四氟乙烯纤维95芳香族聚酰胺纤维33 ̄3469期低;③一般用于室内铺饰用的防火材料,其防火性能均采用发烟量和发热量来表征.维氯纶的温度时间面积因子(t・dθ)为0,是几种纤维中最小的.在相同条件下发热量较小说明它们在燃烧时可抑制纤维分解,而不释出大量的烃类物质以助燃.大量文献报道,合成纤维着火时,人往往是被织物窒息而死.而维氯纶的发烟量仅稍大于粘胶纤维,产生少量烟雾,适用于制造室内铺饰织物,市场前景十分美好;④维氯纶燃烧产生的有害气体为氯化氢.比其他含氯纤维产生的氰化氢的毒性要小.其收缩温度170 ̄180℃,起始分解温度234℃,因此,当接触火焰时仅发生收缩,聚合物徐徐分解,故不会烫伤皮肤.维氯纶的软化温度180℃,熔点不明显,不像锦纶和涤纶熔融后粘在皮肤上产生烫伤.[10]3.2用途可用于织造毯子、床单、罩布等床上用品;妇女儿童衣服、儿童睡衣、老弱病残者的内衣以及工作服衣料;滤布等工业用布;女式兽毛外套、衣服衬里、玩具等绒毛类织物;高级毛巾、墙纸、纸张等非织造物.4阻燃涤纶4.1品种和性能阻燃涤纶制法有共聚法、共混法和纤维阻燃后整理法.以日本东洋纺的阻燃涤纶Heim为例,阻燃涤纶的性能如下:①自熄性优良,符合日本消防法和美国可燃性织物的阻燃标准;②纤维各项物理指标和后加工性能与常规涤纶几乎相同,显示出优良的后加工性能和使用性能;③用分散染料染色时比常规涤纶易染;④燃烧时无毒,不会灼伤人的皮肤.有人曾研究过涤/棉混纺织物的可燃性,结果发现,涤/棉(50/50)织物容易燃烧,即极限氧指数值较低.阻燃整理剂大多以卤素、磷及其化合物为主要成分,较早文献报道的78种阻燃整理剂:含卤素的化合物33种,含磷化合物17种,磷-卤素“配伍”的化合物20种,氮-卤素“配伍”的化合物8种.[11]4.2用途最早的阻燃涤纶用于薄型窗帘纱,原丝78dtex,加捻至800捻/m,用有梭织机制造的织物克重为50 ̄70g/m2.生产厚型窗帘织物,是用165dtex的阻燃涤纶为经纱,腈氯纶为纬纱,经有梭织机织成.交织织物也是床毯、幕布、航空工业中椅子套的装饰材料.棉被、儿童和老人睡衣,特殊防火要求的工作服;阻燃的绳索、缝纫线、帐篷、屏风、工程用布等.5阻燃纤维的发展随着我国阻燃法规的不断健全,阻燃纤维纺织产品开发力度将不断增大,永久阻燃性织物将成为我国纺织品市场的新热点.阻燃涤纶因具有永久阻燃性,其应用前景将十分广阔.主要用途有:产品用纺织品、建筑内装饰材料、防护服等.日本三菱人造丝公司采用非卤素难燃剂,开发出耐候性和难燃性高的聚丙烯(PP)纤维.美国明尼苏打州St.Paul的3M公司最近面市的陶瓷非织造布(专利产品),它在火焰屏蔽用途上有优异的热性能.名为“Ne-xtelFlameStoppingDotPaper”(简称FSDP)的这种产品是薄型且柔性的,当暴露到火中时能保持其完整性并将不会熔化与收缩,在9min内不会烧穿,且有向室内透过的热量较小,没有烟及毒气放出等特点.NextelFS-DP潜在用途包括防火墙、熔炉、燃烧器、管道、绝热材料、密封及阻燃贮藏库等.[12]环境友好型阻燃纤维,纳米级粒径的阻燃剂[13,14],无熔滴阻燃纤维,舒适型阻燃纤维等特殊用途的新型阻燃纤维正在应运而生.[15]参考文献:[1]林山.阻燃纤维[J].上海丝绸,2004(3):26-29.[2]马新安,李新延,王瑄.纯棉织物耐久性阻燃整理的研究[J].陕西纺织,2004,64(4):2-6.[3]LyonsJW.TheChemistryandusesoffireretardants[M].NewYork:W-ileyLuter-science,1970.22.[4]姚穆,周锦芳,黄淑珍,等.纺织材料学[M].北京:中国纺织出版社,1990.104.[5]张梅,孟繁慧.一种轻量吸湿透气功能性保暖内衣的研制开发[J].上海纺织科技,2006,34(1):57-59.[6]邹振光,毛西亭,施楣梧.常规阻燃纤维的技术现状与发展趋势[J].纺织导报,2006(3):45-49.[7]张建春,钟铮.腈氯纶阻燃纤维生产技术与应用[J].纺织导报,2000(2):17.[8]欧育湘.实用阻燃技术[M].北京:化学工业出版社,2002.348-349.[9]全凤玉,纪全,夏延致,等.阻燃粘胶纤维的研究及其进展[J].纺织学报,2004,25(1):121-123.[10]周翠荣,董奎勇,杨萍.阻燃粘胶纤维及其研究现状[J].人造纤维,2004(4):25-26.[11]吴英,翟中凯,郭永林.阻燃涤纶的性能及应用[J].产业用纺织品,2001(1):35-36.[12]高新方.阻燃纤维新发展[J].新纺织,2003(11):21-23.[13]贾修伟.纳米阻燃技术[M].北京:化学工业出版社,2005.570-571.[14]张泽江,冯良荣,邱发礼.纳米无机阻燃剂的研究进展[J].化学进展,2004,16(4):509-516.[15]秦华军,张立新.阻燃剂的现状与发展[J].华北工学院学报,2001,22(2):113-114.杨丽等:阻燃纤维及应用7。
农村幼儿园特色教育——论文-杨丽

农村幼儿园健康活动教育的创新因地制宜就地取材《纲要》明确指出:“城乡各类幼儿园都应从实际出发,因地制宜地实施素质教育,为幼儿一生的发展打好基础。
”为保证幼儿户外活动的时间,提高幼儿户外活动兴趣,培养幼儿各方面能力。
我们做了以下实践,取得良好效果。
一、因地制宜,创设适宜的户外活动环境,让幼儿的户外活动“活”起来。
幼儿的户外活动要“活”起来,必须有适宜的场地,而农村有着得天独厚的自然资源,走出园门就是农村广阔的天地。
《纲要》中提到:“环境是重要的教育资源,应通过环境的创设利用,有效地促进幼儿的发展”。
我们因地制宜,充分挖掘大自然的教育价值,使大自然成为幼儿户外活动的场所。
如:每个孩子爱玩水,我们幼儿园没有嘻水池,可离幼儿园不远处有一条大河。
20米左右宽的大河,河水清澈见底,常年水流不断,是天然的“嘻水池”。
我们常带孩子们穿着自制的防水衣(塑料袋制成)进行各种玩水游戏,让幼儿体验游戏活动的快乐。
又例如利用泥巴开展各种游戏活动,让幼儿在玩泥的过程中发展他们的动手能力、思维能力。
我们也没有像城市幼儿园那样的平衡木,但可以利用田埂进行平衡的锻炼,发展幼儿手脚动作的协调性等。
农村自然环境为农村幼儿提供了丰富、开放、自然、有趣的活动场所。
教师合理利用这些有力的条件就能让幼儿在户外活动中“活”起来。
二、就地取材,开发利用山区农村自然资源,让幼儿户外活动“动”起来。
幼儿户外活动,少不了要为幼儿提供活动器材。
我们幼儿园周围有着丰富的山区农村资源树木、竹子、农作物··这些资源不仅随手可得,而且幼儿对此比较熟悉。
根据我园实际,我们就地取材,开发山区农村的自然资源,自制了丰富的户外活动器具,建立“人尽其能,物尽其用”的朴素资源观和价值观。
如用竹节做成的小高跷,组织幼儿锻炼身体平衡、手脚协调的能力;竹梯可让幼儿练习钻、爬、攀等能力;用竹竿做成游戏棒,可供幼儿玩接力赛,赶小猪等游戏;用稻草编草垫子摆在地上让幼儿前后滚翻;用稻草编成辫子、绳,把它放在地上作跳跃障碍物,拿在手上作马鞭。
多元函数可微的充分必要条件12

多元函数可微的充分必要条件作者:刘孝书, 孙跃娟, LIU Xiao-shu, SUN Yue-juan作者单位:商丘师范学院数学系,河南,商丘,476000刊名:楚雄师范学院学报英文刊名:JOURNAL OF CHUXIONG NORMAL UNIVERSITY年,卷(期):2009,24(9)被引用次数:0次1.刘玉琏.傅沛仁数学分析讲义 19862.欧阳光中数学分析 19823.刘孝书关于二元函数可微条件的再探讨 2004(02)4.T M 菲赫金哥尔茨微积分学教程 19805.包志清多元函数可微的一个充要条件 2000(02)1.期刊论文杨丽.高俊宇关于多元函数可微的充分条件的再探讨-中国校外教育(理论)2008,""(4)大多数教材都是在较强的条件下讨论了多元函数的可微性的充分条件,这里给出了较弱条件下的多元函数可微的一个新定理的证明及其应用,应用此定理可以判断一些多元函数的可微性.2.期刊论文沐雨芳.MU Yu-fang关于多元函数可微的充分条件的一点改进-泰州职业技术学院学报2006,6(3)各偏导数存在且连续是公认的多元函数可微的充分条件.实际上,此条件可减弱为:各偏导数存在且其中n-1个偏导数连续时,函数仍可微.3.期刊论文刘孝书.孙跃娟.LIU Xiao-shu.SUN Yue-juan多元函数可微的充分必要条件-井冈山学院学报(自然科学版)2009,30(4)常见的数学分析教材都仅给出二元函数可微的必要条件或充分条件,本文将给出并证明二元函数可微的两个充分必要条件.4.期刊论文朱智和.Zhu Zhihe多元函数可微的一个充要条件-绍兴文理学院学报2008,28(10)文章给出了多元函数在一点可微的一个充要条件,可作为现行<高等数学>教材相关内容的一个补充.5.期刊论文陈贞忠反例在多元函数微分学教学中的应用-新乡学院学报(自然科学报)2009,26(6)讨论了反例在数学理论中的特殊作用,并给出了几个在多元函数微分学教学中应用的特例.6.期刊论文蔡协毅多元函数可微条件的一点改进-浙江工商职业技术学院学报2003,2(2)现在各版本高等数学教材均把偏导数fx(x,y)、fx(x,y)在(X0,y0)连续作为f(x,y)在(x0,y0)可微的充分条件.本文认为,这个条件尚可减弱为:z=f(x,y)的其中一个偏导数在(x0,y0)连续,另一个偏导数在(x0,y0)存在,同样使z=f(x,y)在(x0,y0)处可微.对此结论作了证明,并举例加以说明.7.期刊论文康淑瑰.KANG Shu-gui关于多元函数的一致可微性-雁北师范学院学报2002,18(2)本文主要研究了多元函数一致可微与偏导数一致连续的一个关系,即偏导数均一致连续,则函数一致可微.并且给出了函数在无界区域上的一个特征.8.期刊论文刘孝书多元函数可微性的一个注记-南阳师范学院学报2004,3(6)给出了Henle定理的简单证明,并指出该定理n≥3时不真,进而又给出了一个当n≥3时,函数z=f(x1,x2,…,xn)在点M0可微的定理及其证明.9.期刊论文赵树理.刘孝书多元函数可微性的一个注记-纺织高校基础科学学报2004,17(2)给出了Henle定理的简单证明,并指出该定理在n≥3时不再成立,进而又给出了一个当n≥3时,函数z=f(x1,x2,…,xn)在点M0可微的定理及其证明. 10.期刊论文石会萍关于多元函数可微的条件-沧州师范专科学校学报2002,18(3)本文证明了二元函数可微的充分条件并举例验证.本文链接:/Periodical_cxsfxyxb200909008.aspx授权使用:中共汕尾市委党校(zgsw),授权号:1b28d4b3-627e-47af-bf25-9dce00c04937下载时间:2010年8月10日。
课题研究论文:就业能力导向下的中职护理实验教学方法分析

148492 临床医学论文就业能力导向下的中职护理实验教学方法分析科学技术逐步发展,经济环境发生了很大变化,人才市场需求更为复杂,中职毕业生面临着紧迫的就业压力,这体现在流动性逐步增加方面,更表现在迫切需要技能及实践能力非常突出的人才。
护理人才十分短缺,医疗健康事业不断进步,需要更高的护理服务质量,满足社会发展要求,护理从业人员将更加走俏。
由卫生部一项统计数据来看,2015我国对护理人才的需求人数在232.3万人,这促使护理就业人才就业前景广阔。
但社会形式不断发生变化,医疗技术趋于完善,需要优质的护理提供保障,护理专业提升教学水平,实现对人才的有效培养,让学生掌握良好的操作技能,从整体上提高他们的素养,为社会疏松合格型人才[1]。
护理专业性较为明显,从实践能力上看,其和人才培养质量的关系十分密切,而护理实验教学融入了理论与实践,促使人才的养成,通过此种方法提高学生实践能力,让他们正确认识到自身职业特征,具有良好的协作能力,为此,中职护理专业务必构建形成有效的护理实验教学体系,积极探究,生成一套全新的护理实验教学形式,使护理专业学生更好地适应就业,培育全面发展的护理人才[2]。
一、实验教学方法(一)教师主导下的启发式教学法实验教学时,注重多学科之间的交叉及融合。
利用典型案例设计与讨论,发散学生创新思维,让学生大胆提出疑问,分析并解决问题。
如利用高端设备“高级心肺复苏模拟人”模拟各病例情境,学生扮演其中角色,处置病例,针对病例当中常见问题,给出护理方案,分工模拟实施,让学生在体验中进行摸索,提升团队协作及综合应对的能力。
(二)学生主体下的反思式教学法实验实训课教学时,教师重在发散学生思维指导学生观察并分析事物,同时反思问题。
如,护理技能教学在多阶段训练学习中使用教师规范化讲解演示-学生练习?C教师纠错等,特征是以教师讲解为前提,学生多次进行体验训练在训练当中纠正错误总结反思,形成对技能的掌握。
此种方法成效稳固,技能把握比较牢靠。
关于项目时间管理论文

关于项目时间管理论文时间管理作为项目管理工作中的一个重要组成成分,它与项目的成败,相关企业单位经济利润的取得之间存在很大的关联性。
下面是小编精心推荐的关于项目时间管理论文,希望你能有所感触!关于项目时间管理论文篇一项目管理的时间管理解析摘要:对项目管理的结构框架进行详细的解析以及深入的探究,研究人员发现“与项目有关的时间管理”这一工作内容一方面可以影响项目管理工作的进度规划,另一方面它也可以作为项目管理工作顺利运行的有效方法或者是工具。
总之,本文作者主观的认为,积极的对与项目管理有关的时间管理进行探究工作是极为必要的。
关键词:项目管理;时间管理;解析项目管理作为管理学的一大分支,这一管理工作的落实是在专业知识、技能以及各种科学方法的配合下,对有利资源进行高效的利用,继而在一定的时间期限内达到某种预期结果的目标。
时间管理作为项目管理工作中的一个重要组成成分,它与项目的成败,相关企业单位经济利润的取得之间存在很大的关联性。
本文作者首先解析项目时间管理里的概念,继而详细的论述项目时间管理在企业项目管理工作过程中应用的途径,最后列举与项目时间管理相关的技术与方法以及其发挥的意义,旨在使时间管理为项目管理工作服务的质量实现最大化。
一、浅析项目时间管理的概念项目时间管理实施的目的是为了使某一工程项目如期的完成,这一管理过程是系统性的、连续性的。
依据自己的管理经验,本文作者认为项目时间管理包含的内容是多种多样的,“按照工期、保证项目工程的质量”这是任何一位项目管理者最希望落实的目标,但是纵观项目管理工作的现状,我们能够切实的感触到工期延后等现象频繁的出现,所以对工程项目的时间进行合理的安排与规划在项目管理工作体系中是十分必要的工作内容。
做好项目时间管理这一工作内容,一方面可以使项目如期竣工,另一方面也提高了与项目活动有关资源的利用率,最终达到提高项目管理工作质量的大目标。
二、探究项目时间管理在项目管理工作进程中实施的步骤本文作者认为时间管理的过程可以细化为6个阶段,每一个阶段有涵盖了一个或者多个管理过程。
优质护理在神经内科实践方法与效果论文

探讨优质护理在神经内科的实践方法与效果目的分析优质护理在神经内科的应用效果。
方法在我院神经内科进行优质护理活动,转变护理人员的护理观念,强化其基础护理能力,提升护理措施,深化护理内涵,从而提高护理质量和患者满意度。
结果患者对护理的满意度从以往的88%提升到98.2%,每月的护理质量检查以及抽检、病房管理、健康教育、护理安全、基础护理以及医院感染等达标率提升至97.5%目前未出现因护理问题而导致的医疗纠纷。
结论在神经内科实施优质护理可以有效提高护理质量,提升患者对护理的满意度,对患者病情控制也具有较好的价值,可以在其他科室进一步推广。
优质护理;神经内科;护理质量随着环境污染的日益加重以及人们生活需求的扩大,人们对服务质量的要求也随之提高,对于病患来说,护理质量更显得尤为重要。
神经内科病人多为生活不能自理、危重以及年老体弱等患者,临床基础护理以不能满足患者的护理需求,我院神经内科实施优质护理模式,效果斐然,现对其进行总结分析。
1 资料与方法1.1 研究对象选取我院神经内科20名护理人员进行优质护理实践。
护理人员职称:护士8名,护师10名,主管护师2名。
其中专科学历11名,本科学历8名,本科以上学历1名。
同时选取病人40例,对其进行护理研究,其中男21例,女19例,年龄42—81岁,平均年龄52±3.1岁。
1.2 方法1.2.1 氛围营造对20名护理人员进行优质护理护理服务概念、精神、方法进行学习。
之后进行优质护理知识理论考试,同时按照护理人员级别进行护理服务责任状的签订。
将优质护理的服务内容制定成标版挂于护士站1。
在40例患者的床头设立提示牌。
同时还要将优质护理的内容告知患者及家属,争取其护理配合,同时还可以起到监督作用。
每月对护理人员的优质护理能力进行考核,同时对患者进行调查问卷,选取护理服务楷模。
提升护理人员的护理理念,使其真正理解优质护理的意义,从而积极主动的参与到优质护理的实践中去。
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Enhancing English vocabulary pronouncing and spelling through the application of “Orthographic Cipher” approach in a Rural Senior One High School“表音密码”教学法在提高农村高一学生英语词汇拼读效率方面的运用中文摘要英语是世界通用语言,目前在全球范围内是使用最多的交际语言,词汇学习是英语学习者学习英语的一个重要的组成部分。
众所周知,正确拼读英语单词是英语词汇学习的重中之重。
有关事实表明,大多数农村高一学生虽然学了五六年英语(小学三年级开始),但他们在英语单词拼读方面依然有很大困难。
毫无疑问,英语单词拼读能力的薄弱,直接阻碍着学生在英语其它方面的学习。
为什么学生不能有效地拼读英语单词?如何改进英语词汇教学,采取更科学有效的教学方法激发学生的积极性和主动性?这个问题一直困扰着笔者。
这是否与英语语音的学习方法和学习策略有关?目前还在农村学校流行的“国际音标”语音教学法是否符合英语文字的本质?语音训练新方法——“表音密码”教学法是否能够提高农村高一学生拼读英语单词的效率?“表音密码”作为一种不同于“国际音标”的语音教学法,也许能更好地适应中学英语教学的要求,能够使学生有效地读写记忆英语单词。
带着这个愿望,笔者开始了这次研究。
首先阐述了词汇教学的的重要性,然后对国内教授英语单词拼读的现状进行了分析,迫切地感到上述问题有必要进行研究。
接着本文通过回顾国内外在学习策略及单词拼读教学方法上的诸多研究,发现各种方法各有优缺点,但都不是从英语文字本质出发,效率低。
因而,笔者针对河南省农村一所高中的一年级学生进行了“表音密码”方法在单词拼读中的运用方面的研究。
论文提出两个假设:㈠“表音密码”语音教学法能够提升农村高一学生的英语单词的拼读能力;㈡英语单词拼读能力的提高能够带动学生在英语其它方面学习能力的提高。
为了验证这些假设,笔者采用河南省某农村中学高一年级两个平行班作为研究对象,一个实验班,一个对照班。
实验班采用“表音密码”教学法训练学生拼读单词,对照班采用“国际音标”教学法训练学生拼读单词。
实验结束后,经过两个班的前后测成绩和问卷数据的spss分析,结果表明受培训的实验班在后测中,假词朗读和拼写测试明显优于对照班;“表音密码”教学法比“国际音标”教学法更能有效提高高一学生的英语单词拼读能力,也证明接受“表音密码”教学法进行培训的学生极大地提升了学习英语的自信心和主动性,从而也在很大程度上带动了学生在英语整体学习能力的提高。
最后,论文总结了本教学实验的阶段性后果,提出了运用“表音密码”教学法进行单词拼读教学的两点建议:1.在学习英语的任何阶段,即使是在已有六年英语学习基础的高中阶段,英语教师都要从英语是表音文字这个本质特点出发,对学生进行“表音密码”方法的训练,提高学生的英语单词拼读能力。
2.教师应该结合实际所用教材,经常性地对学生进行“表音密码”方法的训练,帮助学生更实际有效地学习英语词汇,增加词汇量,为英语学习打下坚实的基础,从而带动学生英语学习的全面提高。
关键词:“表音密码”教学法,英语词汇的拼读能力,农村中学。
AbstractEnglish is the most widely used number one world language. However, too many students in rural areas in China have great difficulty in learning even the most basic elements of the language: vocabulary. As is well known to us all, what is of great significance to leaning English vocabulary is the pronunciation and spelling of each word, and the pronunciation of a word is the basis of the base. During my teaching practice, a great many students in a rural senior one high school still have so many problems in pronouncing and spelling English vocabulary. There is no doubt that the problems badly influence the English learning of a student. The following questions always strike me: why do students often fail in pronouncing and spelling English vocabulary efficiently? What is the effective approach to build up the confidence and motivation of students? Does it relate to their English phonetic learning strategies? Can IPA-international phonetic alphabet approach that is still popular in rural areas assist students in pronouncing and spelling English words efficiently? Can “orthographic cipher”approach enhance rural students‟reading and spelling abilities of English vocabulary?Based on the questions, an investigation was conducted in the application of the “Orthographic Cipher” approach used to teach and learn to pronounce and spell English words. Firstly, the author elaborated the great importance of English vocabulary in Teaching and Learning English; then analyzed the domestic situations in teaching and learning to pronounce and spell English vocabulary and felt that there is critical need for research. Next, the author found that the three approach —the International Phonetic Alphabet approach, the phonics approach and the whole language approach all don‟t reflect th e English nature i.e.a kind of the orthographic language and have low efficiency though they have their own merits. Therefore, the author began the study o f the “Orthographic Cipher” approach used by the senior one students of a rural senior high school in Henan province.Two hypotheses are proposed: ⑴The “orthographic cipher” approach can enhancerural students‟ abilities to read and spell English words; and ⑵ the improved phonetic level can help to re-found interest in English and confidence in themselves in learning this language, thus raising their whole English learning level. In order to validate the assumptions, the author has taken two natural classes of the first graders in senior one high school as the subjects, experimental class and control class. The experimental class was taught to read and spell English words b y the “orthographic cipher” approach while the control class by means of the IPA approach. After three-month experiment, the pre-test and post-test are analyzed. The SPSS analysis shows that students in experimental class who have been trained in the use of the “orthographic cipher” approach performed better in the pseudo word post-test than those in the use of the IPA.The results show that the “orthographic cipher” approach can effectively develop the students‟ ability to pronounce and spell English vocabulary. I also prove that the English reading and spelling ability of the experimental group has increased remarkably over those of the control class; Moreover, it built up the students‟ self-confidence and they would learn English on their own initiative.Finally, the thesis summarizes the achievements of the experiments and sets forth two suggestions on vocabulary teaching from “orthographic cipher” phonetic instruction: First, it is essential that teachers should instruct students in a basic English learning stages in pronouncing and spelling English words by the “orthographic cipher”approach, which reflects the English nature i.e. a kind of alphabetic language.Second, I suggest that teachers should make the best of the present teaching materials to instruct students how to read and spell English words by means of the “orthogr aphic cipher” approach daily. The first thing that we should do as teachers is to help students learn English vocabulary more effectively, acquire as many English words as possible and lay a solid foundation for going on learning English, having a strong influence on the whole English level of the student in our country.Key words: the “orthographic cipher”approach, , pronouncing and spelling of English vocabulary, a rural senior high schoolContentChapter 1 Introduction1.1 The importance of English vocabulary in Teaching and Learning English1.2 The importance of English sounds in teaching and learning to read and spellEnglish vocabulary1.3 The Present Situation of V ocabulary Teaching In A Rural Senior High School1.4 The Statement of the Problem and Need for studyChapter 2 Literature Review2.1 Three Dominant Approaches in Teaching Decoding and Encoding English2.2 The International Phonetic Alphabet Approach2.2.1 Advantages of the International Phonetic Alphabet2.2.2 Disadvantages of the International Phonetic Alphabet2.3 The Phonics Teaching Method2.3.1 Advantages of the Phonics Teaching Method2.3.2 Disadvantages of the Phonics Teaching Method2.4 The Whole Language Teaching Method2.4.1 Advantages of the Whole Language Teaching Method2.4.2 Disadvantages of the Whole Language Teaching Method2.5 New phonetic instruction----- Orthographic Cipher2.5.1 Knowledge about Orthographic Cipher2.5.1.1 26 Letter Names and 26 Letter Sounds2.5.1.2 26 Consonant Letter Sounds and 18 V owel Letter Sounds2.5.1.3 108 Letters and Common Combinations Representing 26 ConsonantLetter Sounds And 18 V owel Sounds2.5.1.4 468 Uninterrupted Sounds2.5.1.5 Common Prefix and Suffix2.5.2The Abilities Of Orthographic Cipher2.5.2.1 Segment Words2.5.2.2 The Location of Stressed Syllable2.5.2.3 The Pronunciation Of Stressed And Unstressed SyllableChapter 3 Research Methodology3.1. Research questions3.2 Subjects3.3 Design of the Study3.3.1 The experiment group: the orthographic cipher method3.3.2 The control group: The IPA Method3.4 Measures of the experimental Procedures3.4.1 Pre-test3.4.2 Post-test3.5 Instruction Processes3.5.1 26 letter names and letter sounds3.5.2 Instruction of the 26 Consonant Letter Sounds3.5.3 Instruction of the 18 V owel Letter Sounds3.5.4 Instruction of 118 Letter and Letter Combinations Representing The 44 Sounds inEnglish3.5.5 Instructions of 468 Uninterrupted Sounds3.5.6 Prefix and Suffix3.5.7 Instruction of the Seven Cipher Abilities3.5.7.1 Segment Words3.5.7.2 The Location of Stressed Syllable3.5.7.3 The Pronunciation of Stressed and Unstressed Syllable3.5.7.4 Application3.5.7.5 RewritingChapter 4 Results and Analyses4.1 Results and Analysis of the Pretest4.2 Results and Analysis of the Posttest4.3 SummaryChapter 5 Conclusion5.1 Major Findings of The study5.2 Pedagogical Implication of the Study5.3 Limitations of the Study and Suggestions for Further ResearchReferencesAppendixⅠ: Knowledge about Orthographic CipherAppendixⅡ: Abilities of Orthographic CipherAppendi xⅢ:Orthographic Cipher Training PretestAppendixⅣPhonetic Training PosttestChapter 1: Introduction1.1 The importance of English vocabulary in Teaching and Learning EnglishLanguage is the instrument through which people communicate with each other. V ocabulary is one of the three elements(phonology, grammar, and vocabulary)of a language. Words constitute a fundamental component of any language; thereby words are of critical importance to language learners. It is also the building material of a language. It is clear enough that without knowledge of words, language learning turn out to be “a castle in the air”(Wilkins,1978). Wilkins also says “Provided one knows the appropriate vocabulary, communicating in a foreign language may not be very difficult; without vocabulary, however, it is next to impossible.”(Wilkins,1978). Carter & McCarthy compared the relative significance of grammar and vocabulary in the processing of negotiating meaning for language learners and drew the conclusi on that “Without grammar, very little can be conveyed, without vocabulary, nothing can be conveyed”(Carter & McCarthy,1990. Just as Harmer says “If we compare language structure as the sketch of language, vocabulary is the thing that provides important org ans as well as blood and flesh”(Harmer,1990)In all, vocabulary is of vital importance in foreign language learning and teaching. Insome sense, language proficiency is depended on the quantity of mastered vocabulary. V ocabulary is the foundation of all language skills and is the rather afflicting part that English learners may come across in the first place. Vocabulary teaching is fundamental and an integral part of language teaching.In learning English, vocabulary acquisition is the main task, it is very important to acquire as many English words as possible. It is well-aware that learning English involves the learning of a large number of English words. In measures the readability of an English text, vocabulary difficulty has consistently been found to be the most significant predictor of overall readability. Moreover, once a vocabulary measure is included in a prediction formula, sentence structure does not add very much to the prediction. In teaching comprehension, the first task is helping students understand what unfamiliar words mean. The second task is helping students remember words or, more precisely, helping them store words, especially content words in memory. A second fact about vocabulary and memory is that form may be more important than meaning in remembering a word item. We rely on the form of a word to lead us to its meaning, for we see or hear a particular …shape‟ and try then to remember what that shape means(Carter & McCarthy1990, p.64)..1.2 The importance of English sounds in teaching and learning to read and spellEnglish vocabularyEnglish is an alphabetic language. As an alphabetical language, its letters should represent the 44 sounds in English. These 44 sounds are both life and soul of English. Whether one can spell an English word correctly is largely decided by whether he or she knows the one hundred or so letters and letter combinations that represent these 44 sounds.As is mentioned above, vocabulary begins with sounds, so phoneme is the foundation of vocabulary. The most important ability is phoneme for English learners. Learning a foreign language must begin with phoneme.As long as we learn phoneme well, we lay a solid foundation for the vocabulary learning. If we don‟t learn it well, it will affect badly the development of language competence and learning ability.The famous phonetic professor of Britain from London University, C. Gimson, stated that whatever language, people must be equipped with almost all of the phonetic knowledge of this language, 50% grammar and vocabulary an d that‟s enough. (Hu min, 2003). Although a bit exaggerated,we can see the importance of phoneme in learning language. The famous professor, Xu Guozhang, stressed that learning phoneme well is the first step of learning English process. He stated that learning pronunciation well is the best way to restore the language materials in the right form, and hence strengthen the grammar and vocabulary the most efficiently, thus improving the practical application ability. If the pronunciation isn‟t learnt well, the learners have difficulty in not only speaking English but also reading English (Xu Guozhang, 1991).Professor Liu Bingshan also pointed out, “The English teaching in middle schools is in a basic stage, having a strong influence on the whole English level of the student in our country. Mastering phoneme is the basis of the base—the base must be founded in the youth ”(Shu Dingfang, 2005)According to the statements and researches from the above experts and professors, we can see the significance of phoneme. They placed special emphasis on the pronouncing accuracy. Whether and how many phonemes are mastered directly determines on the competences of listening, speaking, reading, writing and translating. If a student has a strong reading ability, his or her vocabulary, understanding of the language in terms of its grammar and usage will soon be enriched and developed properly.1.3 The Present Situation of Vocabulary Teaching In A Rural Senior High SchoolIn spite of the importance of English vocabulary and phoneme mentioned above in teaching and learning English, it‟s not time for English learners, English teachers and language experts to be optimistic in terms of learning and teaching status of vocabulary.. In a rural senior high school, many English learners get into the habit of rote learning of English, which was developed from the start. Many English teachers teach students English vocabulary just as they treat Chinese. In class, they explain the meanings of words first, and then they have the students read the words after him or her. Secondly, the students and theteachers appeal to dictionaries whenever they encounter new words. Consequently, much time is wasted; the main themes of vocabulary are weakened; the cognitive sequence is confused.Why so? Because Many English teachers teach students English vocabulary by still purely using the IPA as the only method, which, in practice, takes a roundabout way. As a result, students use the IPA as a walking stick. If they don‟t recognize the IPA of a ce rtain word, they don‟t pronounce it accurately, thus not spelling the word quickly and correctly, which makes students try to spend time in memorizing its spelling one letter after another, which brings about double memories and double waste.1.4The Statement of the Problem and Need for studyIn middle school English classes, teachers seem to spend too much time on explaining grammatical language points and drilling students with endless hours of all kinds of exercises in order to help students digest what they learn in class. However, some very basic language learning abilities are neglected, such as word decoding strategies. In order to help students get higher scores, teachers train students to get correct answers tirelessly. Students have to do endless hours of rigid and boring exercises in order to master some language points. Yet, the results are no surprise to us that many students still make disappointing progress. In order to improve the situation, both educators and front line teachers are beginning to pay more attention to the four skills (listening, speaking, reading and writing). But basic word processing strategies seem to be a forgotten realm. Teachers do not realize it‟s a necessary precondition for children to unlock the door to English learning. Furthermore, many teachers themselves do not have a clear understanding of the correspondence between words‟ pronunciation and their printed forms. In my opinion, if we can help students master such basic word decoding skills, everything else coming after that probably will all become easier.Through my many years of English teaching English, I find that correct spelling and remembering of even the meaning of words must rely on identifying word‟s accurate pronunciation. If a child can‟t read a word correctly, it will be very difficult for him or her to remember its spelling, say nothing of its meaning. Although I know these clearly, English vocabulary has been worrying us all the time, though we have been spending too much timeand making too many efforts in learning words. I have been afflicted because I have not been able to find out an efficient approach to teach the students to learn to read and spell the words they are required to master. T he students have been distressed because they haven‟t been able to learn the required words. I want to know if there is a new strategy that can help middle school students to process words more efficiently than before. Just then, I was taught with honour by Doctor Li the “orthographic cipher” method, an approach based on English origins. I started to try to learn and apply it myself. As soon as I have mastered it, I realized that the orthographic cipher may be just that something that our students need as a powerful tool to deal with the English words. However, for a great many senior one high school students in a rural school who have read words by means of the IPA for three years, Which is more effective to read and spell English vocabulary, the International Phonetic Alphabet approach or the “orthographic cipher” approach?Therefore, I must study the teaching approach of the “orthographic cipher”. I will compare the current word processing strategies and do an experiment between the “orthographic cipher” and the IPA. I hope there is a new strategy that can help middle school students to process words more efficiently than before.Chapter 2 Literature ReviewThis chapter is the literature review of the present study. It first introduces the dominant methods in phonological teaching and then the advantages and disadvantages of the dominant teaching methods. Lastly, a new and practical phonetic instruction-----the “Orthographic Cipher” approach is introduced. Related literatures from Chinese writers and writers abroad have been reviewed in this chapter to show this topic has been dealt with in recent years.2.1 Three Dominant Approaches in Teaching Decoding and Encoding EnglishAt present, the dominant methods we use in teaching decoding and encoding English are ⑴International Phonetic Alphabet approach, ⑵Phonics approach ⑶the wholelanguage approach. In general, most non-English speaking countries use the IPA system —The International Phonetic Alphabet as the main word processing strategy. China is a typical example. However, along with the development and improvement of English learning and teaching strategies, some teachers are beginning to use the phonics approach in helping students deal with words. A typical example is Ladder English. Finally, by the year 2002, the ministry of education in China decided not to require elementary schools to teach students the IPA system anymore. Instead, throughout elementary schools in China, they began to use something that is called the whole language approach in the west. All these three approaches are problematic. Before we go on exploring the strategy, it is important for us to understand the advantages and disadvantages of the three dominant approaches that are popular now.2.2 The International Phonetic Alphabet ApproachThe International Phonetic Alphabet, or the IPA for short, is a system of phonetic notation based on the Latin alphabet, devised by the International Phonetic Association as a standardized representation of the sounds of spoken language that people use to teach the exact pronunciation to newcomers. In 1886, a group of French and British language teachers, led by the French linguist Paul Passy, formed what would come to be known (from 1897 onwards) as the International Phonetic Association. The original alphabet was based on a spelling reform for English known as the Romic alphabet, but in order to make it usable for other languages, the values of the symbols were allowed to vary from language to language. However, in 1888, the alphabet was revised so as to be uniform across languages, thus providing the base for all future revisions. Since its creation, the IPA has undergone a number of revisions. After major revisions and expansions in 1900 and 932, the IPA remained unchanged until the IPA Kiel Convention in 1989. A minor revision took place in 1993, with the addition of four mid-central vowels and the removal of symbols for voiceless implosives. The alphabet was last revised in May 2005, with the addition of a symbol for the labiodental flap.Apart from the addition and removal of symbols, changes to the IPA have consisted largely in renaming symbols and categories, and modifying typefaces.As of 2008,there are 107 distinct letters, 52 diacritics, and 4 prosody marks in the IPA proper.The method with which phonetic components of an English word is marked is named phonetic notation. In China, most rural English teachers are interested in pronouncing English words by the IPA system, a set of artificial symbols like Chinese phonetic notation.2.2.1 Advantages of the International Phonetic AlphabetWhy do we need a universal system of phonetic transcription? Of course, the IPA system has its existing advantage. One of the benefits of using the IPA is the ability to use a single symbol for a sound pronounced differently in different dialects. The IPA is therefore, useful for teaching the sounds of various languages, because it does not have any ambiguities. From one language to another, it is sometimes good to create a standardized transcription system; Another benefit of using the IPA is, as long as students have fully mastered what sounds these symbols and letters represent, they can virtually look up any word from its IPA symbols, which makes it easier and convenient for dictionary users to learn how to pronounce new words. Many British dictionaries, among which are learner's dictionaries such as the Oxford Advanced Learner's Dictionary and the Cambridge Advanced Learner's Dictionary, now use the International Phonetic Alphabet to represent the pronunciation of words.It‟s mostly used by non-native speakers of English when learning to speak English.2.2.2 Disadvantages of the International Phonetic AlphabetAs we all know, the IPA is a set of specifically-devised symbols used to transcribe the sounds of speech which was independent of any particular language and applicable to all languages. Such a purpose is understandable and acceptable. Yet, in reality, English is typically an orthographic language of which 97.4% of English words are phonetic, according to the statistics from English speaking countries, thus, under the condition that the whole English phonetic system itself is as good as 97.4%, using the IPA system to mark the sounds of every English word is definitely unnecessary and certainly a waste of time. On the other hand,phonetic symbols are hard to learn. The first reason is that there have not been a set ofsymbols as a universal system for transcribing speech sounds, the IPA is not universal among dictionaries in different countries; all kinds of phonetic symbols are dazzling. Inconsistent phonetic symbols have greatly prevented learners from learning to read words, they can only learn to read by feeling and repetition and will be confused for ever. What‟s more important, with the IPA, the learners will have to learn different contents but writing the symbols. That means, they will have to recognize the universal sounds of a set of symbols. As known to us, the symbol set of IPA is also much harder to learn because it is so large. Moreover, the learners who learn English by means of the IPA method do not read the word itself but pay attention to its phonetic symbols; they are reading the phonetic symbols. The method makes learners depend on IPA too much. Consequently, many Chinese English learners can not read the English materials without the IPA. As is known to us, it is impossible for us to add the I PA to all kinds of English readings like newspapers, magazines, etc. Americans don‟t use the IPA unless they can‟t sound out a word when they see it. Only then do they look it up in a dictionary. The word becomes one without sound: its sound and form are separated. The method of “international phonetic alphabet” changes the nature of alphabetic orthography of English., which is also exactly what the IPA system does to every word when the pronunciation of a word is marked by an artificial cluster of symbols this can be seen when we observe any student using the IPA system to first sound out a word, and then try to remember the spelling of the same word by remembering the letter names of that word. Without letter sounds, or to be more specific, any natural or linear sequence of letter arrangements is no different than a set of meaningless number random numbers or letters randomly put together. This is why so many students find it difficult to remember the spelling of English words because the IPA system turn the letters in any given word into dead letters. Lastly, many students have much difficulty in just memorizing and sounding out all the IPA symbols accurately. This is especially true for younger children. It is too complicated for the small children to recognize that many abstract and meaningless symbols in addition to remembering words themselves. This is the reason why English-speaking countries, like America, England, Canada etc, never learn the IPA system but have few problems in pronouncing words.In short, the IPA system creates more problems for Chinese students in learning English than solutions.2.3 The Phonics Teaching MethodPhonics has a long history in English teaching methodology, and it was originated in American reading instruction as far as in 1790s. However, it was not until 1960s that phonics drew great attention of researchers in western countries. And phonics started to become popular in the 1990s when the relationship between phonic and word-decoding-recoding ability has been found.Back then, since there were not that many books written, the primary textbook for most people was the Bible. Children were taught to read the Bible through their memorization of the twenty-six-letter alphabet. Gradually phonics was developed and merged into the teaching of the association of sounds with letter identification. With that, there was an extreme amount of emphasis on word decoding skills to help a student sound out unfamiliar words. Phonics became actually a teaching method emphasizing word-decoding abilities. Children were taught systematically to break the code of a written language that aims to identify letter-sound correspondences with phonics, which helps them put together a word by using sounds.The so-called phonics approach roughly refer to the method of decoding words by relying on the students‟ knowledge of letter sounds in words and the natural orthography rules. In English speaking countries, phonics is an essential part of a comprehensive approach to the teaching of reading that involves the breaking down of words into smaller parts. This process is called decoding. It focuses on letter and sound relationship and teaches children to “sound out” unfamiliar words. Children are also taught encoding skills, which help them to learn to spell new words correctly by putting together the sounds and letters that they hear. The goal of phonics instruction is to teach students that there are systematic and predictable relationships between written letters and spoken sounds. At present, phonics is the most popular English teaching method in the world and is widely applied in the USA, Canada etc. In these countries, beginners shall start with phonics in kindergarten which can。