第一篇:2015年下半教师资格证高中化学面试试讲教案
2015年下半教师资格证高中化学面试试讲教案
离子反应
一、说教材
(一)教材的地位与作用
《离子反应》是人教版高一化学必修一第二章第二节内容,本节课着重介绍“酸、碱、盐在水中的电离”。这在中学阶段基础理论知识中,占有极其重要的地 位,贯穿于中学化学教材的始终,是中学化学教学的重点和难点之一。在此之前,学生已经学习了物质的分类,这为过渡到本节课的学习起到了铺垫作用。本节内容 是后面《氧化还原反应》内容学习中不可缺少的部分,因此,本节内容在整个教材中起到了承上启下的作用。
(二)教学目标
1.知识与技能目标:通过学习了解电离,电解质的概念;能用电离方程式表达常见、典型的电解质在水溶液中的电离,并从电离理论的角度认识酸、碱、盐;通过酸、碱、盐的本质探究,感悟科学探究的基本方法,提高科学探究能力。
2.过程与方法目标:培养学生通过实验探究问题,分析问题,归纳问题的能力。
3.情感态度与价值观目标:从更深的层面研究物质发生化学反应的意义,培养学生透过现象认识事物本质的能力。
(三)教学重难点
电解质的判断、电离及电离方程式的书写
二、说学情
对于高一年级年级的学生来说,他们虽然对化学基础知识有了一定积累,但程度参差不齐,差别较大,学生的抽象思维能力还有待进一步提高。这一年级的学生思维 活跃,求知欲强,有强烈的好奇心,虽然处于抽象思维阶段,但本节概念比较抽象,应适当增加实验和电脑动画以使微观离子的活动变得直观。
三、说教法
根据新课程标准的要求,结合本节课实际内容,我确定本节课的教法为指导发现法、微观演示法。
四、说学法
根据本节课实际内容,我确定本节课的学法为分组讨论法、实验探究法
五、说教学过程
(一)导入
将学生分组,进行小组探究。探究活动为:让每组学生根据所提供的物质(铜片、石墨、氯化钠固体、氯化钠溶液、无水酒精、蔗糖、蔗糖溶液、蒸馏水、自来水、硫酸溶液)进行思考并动手操作,怎样才能使灯泡亮起来?通过小组内统一分工、互相协作,使学生学会与他人合作、学会探究、学会组内交流评价,参与评价。
探究结束之后,各组推荐一位语言表达能力较强的学生,把本组的做法边用实物投影展示,边进行介绍。动员全班同学在小组内进行讨论,对每小组展示的成果进行 综合评价,找出本组的优缺点,确定最佳小组,并说出最佳的理由。通过此种方式培养学生的口头表达能力,让学生学会交流,学会向他人展示自己的成果。
(二)新授
引导学生利用上节课所学的分类方法,对导电材料进行分类。然后引导学生从纯净物和混和物、单质与化合物等分类标准对能导电的物质进行分类,从而引出电解质概念。在此过程中,使学生掌握分类的标准,学会分类。之后,让每组学生通过自主学习的方式来理解电解质的定义,把自己的理解与其它组员交流,组内形成统一意见,举手发言。我引导学生总结,并对学生的说法提出 自己的一些看法,与学生交流。同时为了加深对电解质定义的理解,让学生说出开始呈现的物质哪些是电解质。结合学生回答中出现的问题,引导学生对学生开展评 价,让学生进一步理解电解质概念。(电解质是在水溶液里或熔融状态下能够导电的化合物。如,酸、碱、盐等。)
提出梯度问题引发学生思考,让学生带着问题自主学习课本相关内容。问题1:氯化钠是电解质,为什么氯化钠固体不导电,而它在水溶液中或者在熔化状态下能导 电呢?利用flash课件展示氯化钠固体不导电,在水溶液中或者在熔化状态下能导电的本质。从而引出电离的概念,像NaCl这样溶解于水或受热熔化时,离 解成能够自由移动离子的过程称为电离。同时强调电离的条件有2个:溶于水或受热熔化,酸、碱、盐在溶解于水或受热熔化时都能发生电离。)问题2:如何来表示电解质在水溶液中电离生成了自由移动的离子呢?从而引出电离方程式的书写。学生先自主学习,然后开展组内讨论,提出预设。让学生走上讲 台试着书写电离方程式,教师对学生书写中出现的问题给予纠正。学生阅读课本,学习电离方程式的书写方法和注意点(写电离方程式,要遵循质量守恒定律和电荷 守恒定律)。通过自主学习、不断探究,培养学生热爱化学的积极情感,激发学生学习化学的兴趣。
分析盐酸、硫酸、硝酸的电离的特点,推导出酸的概念。在此基础上,请学生写出NaOH、KOH、Ba(OH)2的电离方程式。NaOH=Na+ + OH-KOH=K+ + OH-Ba(OH)2 = Ba2+ + 2OH-学生通过分析上述电离的特点,总结出碱的概念。电离时生成的阴离子全部都是OH-的化合物。
接着进行探究学习,请学生写出Na2SO4、KNO3、NH4Cl的电离方程式。Na2SO4=2Na+ + SO42-KNO3=K+ + NO3-NH4Cl=NH4+ + Cl-引导学生分析上述电离的特点,总结出盐的定义,即,电离时能生成金属阳离子(包括NH4+)和酸根阴离子的化合物。
(三)小结
通过提问的方式让学生发言,自主概括本节课内容(电解质、电离的概念,需要掌握电离方程式的书写,知道酸、碱、盐的定义)。通过学生的回答了解学生的掌握情况并调整教学策略。
(四)布置作业
1.完成课后练习1-4题
2.书写下列物质在水溶液中的电离方程式
(1)硫酸钠溶液(2)氯化铁溶液(3)硫酸铝溶液(4)氢氧化钡溶液
六、说板书设计
一、酸、碱、盐在水溶液中的电离 1.电解质:水溶液、熔融状态 2.电解质的电离
酸:电离时生成的阳离子全部都是H+的化合物叫做酸。碱:电离时生成的阴离子全部都是OH-的化合物叫做碱。
盐:电离时能生成金属阳离子(包括NH4+)和酸根阴离子的化合物叫做盐。
第二篇:最新高中化学教师资格证面试试讲题目精选
化学教师资格证面试真题(精选)
高中化学《酯化反应》
一、考题回顾
二、考题解析
高中化学《酯化反应》主要教学过程及板书设计
教学过程 环节一:复习导入
厨师在炒菜尤其是烧鱼时都喜欢加些酒和醋,你知道这是为什么吗?这个过程产生了具有浓郁香味乙酸乙酯。环节二:新课教学(1)酯化反应
【演示实验】视频演示乙酸与乙醇反应的实验过程。学生观察。
【提出问题】乙酸与乙醇反应的实验中①实验条件是什么?(浓硫酸作催化剂,加热)②实验现象是什么?(实验中生成了有香味的、不溶于水的、无色透明油状液体。)【微观演示】乙酸与乙醇反应中各分子的变化过程。
【学生归纳】乙酸脱掉羟基,乙醇脱掉氢,再结合生成乙酸乙酯和水。书写化学方程式:
【教师介绍】乙酸乙酯是乙醇分子中的乙氧基(CH3CH2O-)取代了乙酸分子中羧基上的羟基(-OH)的生成物。像这种醇和酸作用生成酯和水的反应叫做酯化反应。
【学生练习】乙酸与正丙醇生成的酯叫乙酸丙酯,甲酸与乙醇的反应生成甲酸乙酯。【发现规律】酸与醇生成的酯叫做某酸某酯。(2)官能团
【教师引导】学生阅读“信息提示”部分,归纳什么是官能团。并举例说明。
【讨论作答】一些基团反映了一类有机物的共同特性,叫做官能团。例如:甲醇和乙醇的官能团是羟基,乙酸和高级脂肪酸的官能团是羧基,甲醛、乙醛的官能团是醛基。
【归纳总结】官能团一般是指能决定这个物质特殊性质的基团。环节三:小结作业
小结:学生总结本节课内容。
作业:总结常见有机物中的官能团及性质。板书设计
答辩题目解析:
1.教学重难点是什么?【教学设计问题】 【参考答案】
学生第一次接触酯化反应,酯化反应是高中有机化学的重要知识之一,是学生必须掌握的一种反应类型,因此本节课的重点是酯化反应。乙酸乙酯是乙醇分子中的乙氧基(CH3CH2O—)取代了乙酸分子中羧基上的羟基(—OH)的生成物,即乙醇分子和乙酸分子间脱去一个水分子的产物。对于学生来说,较难理解,内容也比较抽象,因此设置难点是酯化反应的机理。
2.酯化反应生成的水分子里的氧原子是由醇提供还是酸提供?在科学上怎样给予肯定?【专业知识问题】 【参考答案】
酸提供的。可以用同位素示踪法:用含氧的同位素18O的乙醇与乙酸反应,可发现所生成的乙酸乙酯分子里含有18O原子;同样用用含氧的同位素18O的乙酸与乙醇反应,发现所生成的乙酸乙酯分子里没有18O原子。
高中化学《电解》
一、考题回顾
二、考题解析
高中化学《电解》主要教学过程及板书设计 教学过程
第一环节:情景引入
【复习导入】回忆初中电解水的实验装置,初步理解电池、电极、电解质溶液。第二环节:新课教学 【演示实验】浸入CuC12溶液的两根碳棒分别跟直流电源的正极和负极相连接。接通电源,学生观察两极现象。(一个碳棒覆盖有一层紫红色物质,另一个碳棒表面有小气泡生成,用湿润的碘化钾淀粉试纸检验产生的刺激性气体,试纸变蓝色,说明该气体是氯气。)【得出结论】氯化铜溶液受到电流的作用,在导电的同时发生了化学变化,生成铜和氯气。
【小组讨论】(1)通电前CuC12溶液中存在哪些离子?这些离子作如何的运动?(2)通电时溶液中的离子运动情况有何变化?电路中的电流与电子流向如何?(3)阴、阳离子移向碳电极表面时,哪些离子发生了变化?你能写出两个碳电极上发生的反应并指出反应的类型吗?总反应如何呢? 【学生活动】学生完成两极上的电极反应,并指出反应类型。【视频演示】电解氯化铜微观模拟。
【提出问题】整个过程中能量是如何转化的?(电能转化为化学能)【得出结论】电解是使电流通过电解质溶液而在阴阳两极上引起氧化还原反应的过程。把电能转化成化学能的装置为电解池。
第三环节:巩固练习
在利用电解水的方法制取氢气和氧气时,一般不直接电解蒸馏水,而是电解NaOH溶液或H2SO4溶液,你知道为什么吗? 第四环节:小结作业
小结:引导学生共同总结本节课的内容。
作业:整理电解池与原电池的工作原理,列成表格。板书设计
答辩题目解析
1.本节课的教学目标是什么?【教学设计问题】 【参考答案】
知识与技能目标:能够正确判断电解池的阴阳极,会判断两极所发生反应的类型;能独立地正确书写几种电解池的电极反应式和电解池中发生反应的化学方程式。
过程与方法目标:通过对电解氯化铜溶液的实验操作及对实验现象的观察、分析和推理,体验科学探究的过程。情感态度与价值观目标:通过实验探究,进一步形成科学态度和科学方法,渗透由现象看本质、由个别到一般、由一般到特殊的辩证唯物主义观点。2.简要说明电解的原理。【专业知识问题】 【参考答案】
高中化学《乙烯的性质》
一、考题回顾
二、考题解析
高中化学《乙烯的性质》主要教学过程及板书设计 教学过程(一)情景导入 【情境创设】生活中很多水果有催熟的功能,因为成熟的水果能释放具有催熟功能的乙烯,图片展示常见塑料制品,介绍塑料制品和乙烯有关。提问:乙烯是一种什么物质?其结构和性质如何?(二)新课教学 1.乙烯的结构认知
【展示模型】展示乙烷、乙烯的球棍模型,将模型分给学习小组观察。得出结论:①乙烯分子中有碳碳双键;②乙烯分子中6个原子在同一个平面上。
【教师引导】引导学生回忆书写乙烷的分子式、结构式及结构简式,进一步书写乙烯的分子式、结构式及结构简式。
2.乙烯化学性质的探究 【学生实验】
①把乙烯气体通入酸性高锰酸钾溶液中,学生观察并记录实验现象(高锰酸钾溶液褪色)。②把乙烯气体通入溴的四氯化碳溶液中,观察并记录实验现象(溴的四氯化碳溶液褪色)。
教师总结:①乙烯能被酸性高锰酸钾溶液氧化,使其褪色;②乙烯能使溴的四氯化碳溶液褪色,发生加成反应,写出乙烯加成反应的化学反应方程式。
【教师讲解】有机物分子中双键(或叁键)的碳原子与其它原子或原子团直接结合生成新的化合物的反应叫做加成反应。
【学生活动】由一名学生上讲台用模型演示乙烯分子和溴分子发生加成反应的过程,归纳总结加成反应的规律。(三)巩固提高
【学生练习】写出乙烯与氢气、氯气、氯化氢、水等分子加成反应的化学方程式。(四)小结作业
小结:师生总结本课所学内容。
作业:查阅资料,了解乙烯在工业生产中的重要作用,初步了解加聚反应的特点。板书设计
答辩题目解析:
1.写出乙烯的电子式。【专业知识问题】 【参考答案】 乙烯的电子式为:。
2.怎么给烯烃命名?【专业知识问题】 【参考答案】
中学阶段的烯烃命名主要采用系统命名法,基本要点是:(1)首先,选择含有双键的最长碳链作为主链,按主链中所含碳原子的数目命名为某烯。(2)给主链编号时从距离双键最近的一端开始,侧链视为取代基,双键的位次须标明,用两个双键碳原子位次较小的一个表示,放在烯烃名称的前面。
在大学阶段还会涉及到顺反命名,把两个双键碳原子上所连的四个基团按原子序数进行排序,优先基团在双键同一侧的称为顺式,在双键异侧的称为反式。
高中化学《物质的量》
一、考题回顾
二、考题解析 高中化学《物质的量》 主要教学过程及板书设计 教学过程
(一)复习旧知 导入新课
提问学生化学反应的本质,学生回答之后提出假设:要是可以计算反应有“多少”粒子参加反应,我们是不是可以控制反应呢?是否可定量的要求多少粒子参加反应?引发学生思考和讨论。
教师结合学生讨论内容进行归纳和总结:微观粒子,跟前面例子中的大米、绿豆等,在计量本质上是一样的,不可能通过数数目,得到具体的多少。提出新问题:称量粒子质量可以吗?那我们要怎么办呢?引入本节课《物质的量》。
(二)情景设置 新课讲授 1.物质的量
教师讲解物质的量这一物理量的概念、单位和符号。说明物质的量是国际七个基本物理量之一。2.阿伏伽德罗常数
答辩题目解析
1.阿伏伽德罗常数有单位吗,它的定义是什么?【专业知识问题】 【参考答案】 有单位,单位是每摩尔(/mol)。
把1mol任何粒子的粒子数叫做阿伏加德罗常数,符号为NA。
2.你觉得化学课程中常用的导入方法有哪些,请列举三个例子加以说明?【教学设计问题】 【参考答案】
生活实例导入法:我们经常会给学生强调,化学来源于生活并且服务于生活,因此,很多生活生产实际中的例子是化学老师的好素材;比如在讲解盐类的水解的知识的时候可以“纯碱不是碱”或者“纯碱为什么可以去油污”来导入。
故事导入法:任何学科的理论知识的学习对学生而言都避免不了有一丝枯燥乏味,如果能在平时积累和化学学习有关的小故事,在故事中设置问题情境,能极大的激发学生的学习兴趣和求知探索欲。
实验导入法:化学是一门以实验为基础的学科,奇妙的化学实验想象让学生近距离感知化学,引起求知欲望,树立科学探究意识。
高中化学《萃取》
一、考题回顾
二、考题解析
高中化学《萃取》主要教学过程及板书设计
教学过程 环节一:导入新课
【教师提问】在日常生活中,如果我们的衣服粘了油渍,常常用汽油擦洗,你知道为什么吗? 【引入新课】这是利用了萃取原理,分离互不相溶的两种液体时,我们用分液漏斗。环节二:讲授新课
【展示讲解】分液漏斗的构造与使用原理(斗体,盖在斗体上口的斗盖,斗体的下口安装一三通结构的活塞,活塞的两通分别与两下管连接。)【演示讲解】实验1-4:教师边演示边讲解操作时注意事项:①分液漏斗使用前要验漏②振荡时要及时放气③上层溶液从上口倒出,下层溶液从下口流下。
【提出问题】请尝试归纳什么是萃取、什么是分液? 【得出结论】萃取是利用物质在互不相溶的溶剂中溶解度不同,用一种溶剂把物质从它与另一种溶剂所组成的溶液里提取出来的方法。分液是萃取后将两种互不相溶的液体分开的操作。
环节三:巩固提升
【实验探究】给出药品:苯、溴水、蒸馏水、酒精,请学生分组进行实验萃取溴单质、汇报现象和结论,讨论萃取剂的选取标准。
【得出结论】选取萃取剂的标准为:萃取剂与原溶液互不相溶;溶质在萃取剂中的溶解度要大于在原溶液中的溶解度;萃取剂与原溶液无反应。
环节四:小结作业
【小结】萃取是利用物质在互不相溶的容剂中溶解度不同,用一种溶剂把物质从它与另一种溶剂所组成的溶液里提取出来的方法;分液时萃取后将两种互不相溶的液体分开的操作。
【作业】请尝试总结学过的物质分离和提纯的方法和适用范围。解释在日常生活中,哪些生活中的事例利用了萃取原理? 板书设计
萃取
1.萃取:利用物质在互不相溶的溶剂中溶解度不同,用一种溶剂把物质从它与另一种溶剂所组成的溶液里提取出来的方法。步骤:装液→震荡→静置→分液。
2.分液:萃取后将两种互不相溶的液体分开的操作。3.萃取剂的选择标准:
(1)萃取剂与原溶剂不互溶、不反应;(2)溶质在萃取剂的溶解度大于原溶剂中的溶解度;(3)溶质不与萃取剂发生反应。答辩题目解析:
1.请问本节课的教学难点是什么,你是如何突破的?【教学设计】 【参考答案】
本节课的教学难点是萃取的操作方法。本课首先教师通过直观出示分液漏斗,对分液漏斗的组成进行系统介绍,再此基础之上,教师边讲解边操作,对于学生容易忽略的细节,如分液的方法等加以重点强调,学生通过细致观察进行实验表格的填写,并组织学生通过小组讨论总结出萃取以及分液的概念。在系统完整的操作理论指导下,让学生尝试用给定的药品及仪器设计实验,在动手操作的过程中教师再次进行巡视指导,确保每位学生都能够熟练掌握萃取的操作方法。
2.碘和四氯化碳能用分液漏斗分离吗?【专业知识】 【参考答案】
不能,因为碘能溶于四氯化碳中。高中化学《气体摩尔体积》
一、考题回顾
二、考题解析
高中化学《气体摩尔体积》 主要教学过程及板书设计 教学过程
(一)复习旧知 导入新课
复习公式N/NA=n=m/M,再一次明确物质的量的桥梁作用,同时考虑另外一个宏观物理量——体积。提出新问题:如何建立V与n之间的关系呢?引入新课《气体摩尔体积》。
(二)情境创设 新课讲授 1.提出问题:什么是气体摩尔体积?请学生根据摩尔质量的知识从理论上试着说出气体摩尔体积的概念、单位和计算公式,小组内讨论交流。并在ppt上给出气体摩尔体积的相关知识。
2.学生对课前计算结果和课上的实验的观察,从中归纳结论。
①观察课前对l mol物质体积的计算结果,能得出什么结论?②通过课前对电解一定量水得到氢气和氧气的物质的量比,结合课堂上对实验的观察,能得出什么结论。
教师总结学生回答并得出结论:同温同压时,l mol的气体——体积大,不同气体体积大致相同。固、液体——体积小,不同物质体积各不相同。对于气体,同温同压时:物质的量相同时体积也相同。
3.结合刚刚得出的结论提问:为什么在同温同压时,相同物质的量的不同气体,体积却大致相同?请小组内总结,从微观粒子角度考虑,决定体积的因素有哪些? 教师总结学生回答并进行讲解:决定物质体积的因素:①粒子数目(相同);②紧密排列时取决于粒子大小(固体和液体);③离子间距离很大时取决于粒子间距(气体)。并及时强调,气体分子间距离取决于外界的温度和压强,所以才会出现,分子数相同(即物质的量相同)时体积也相同。
4.通过数据进行讲解和得出结论:
0℃,101 kPa(标准状况),l mol任何气体的体积都约为22.4 L。即此时,气体摩尔体积Vm=22.4 L。提示学生从微观粒子角度考虑,并将模型中的小球换成大小不一的,进行展示,依据模型理解。通过模型中大小不一的小球帮助学生理解相同条件下,不同气体的Vm相同的本质原因。
(三)巩固提升
指导学生进行当堂训练。(四)小结作业
学生总结当堂课学到的知识。布置作业:课下总结物质的量n与质量、粒子数、气体体积之间的关系。板书设计
答辩题目解析
1.本节课的教学目标是什么?【教学设计问题】 【参考答案】
1.知识与技能目标:①能说出气体摩尔体积的概念;②能从宏观和微观两个方面说出影响气体体积的因素;③能进行气体摩尔体积的简单判断和计算。
2.过程与方法目标:①通过已有知识的迁移理解气体摩尔体积;②通过制作模型和动画演示理解各因素如何影响气体体积。3.情感、态度与价值观目标:①进一步体会物质的量的“桥梁”作用;②培养分析推理能力,形成良好的学习习惯。
2.气体摩尔体积的大小是不是固定不变的,取决于什么?【专业知识问题】 【参考答案】
气体摩尔体积的大小并不是固定不变的,取决于温度和压强。在同温同压下,任何气体的气体摩尔体积大小相同。
二、考题解析 【教学过程】 环节一:导入新课
教师展示“滴水生火”魔术。
教师表演化学小魔术:“课前在酒精灯灯芯里暗藏一小块钠,实验开始时用胶头滴管在灯芯内第一滴水。组织学生仔细观察实验现象。
提出问题:“为什么刚才的实验中用水点着了火呢?”
引入新课:这是因为灯芯里有金属钠,今天我们就一起来探究金属钠的性质,进而找到这个问题的答案。环节二:探究新知
实验探究1:钠的物理性质。
教师展示存放在试剂瓶中的金属钠,强调钠的取用方法和注意事项(用镊子夹取小块钠,用滤纸把表面的煤油吸干;剩余的钠放回原试剂瓶中等。)提出问题:“观察到了什么实验现象?说明了什么?” 学生观察思考、表述现象、归纳性质。实验探究2:钠与氧气在加热条件下的反应。
提出问题:“观察到了什么实验现象?得出什么样的结论?” 实验过程:将一小块金属钠放在石棉网上加热。
学生进行实验,观察、表述现象、归纳性质。(活泼性、熔点)讲解:钠与氧气在加热的条件下生成淡黄色的过氧化钠,过氧化钠和水反应放出大量的热并会生成氧气,温度达到了棉花的着火点,棉花就燃烧起来了。教师强调化学反应条件对化学反应的影响。
学生书写钠与氧气分别在常温和加热条件下的化学反应方程式。实验探究3:钠与水的反应。
教师演示实验。(向一支盛有水的烧杯中滴加几滴酚酞溶液,然后投入一小块黄豆粒大小的金属钠,观察实验现象)提出问题:“观察到了什么实验现象,有什么样的结论?” 学生进行实验,观察、表述现象、引导学生得出结论。
讲解:实验现象可以归纳成五个字“浮、熔、游、响、红”,得出相应结论。环节三:巩固提升,深化理解 请学生说一说钠非常活泼的原因。环节四:小结作业
小结:师生共同总结钠的物理性质和化学性质。作业:查阅资料并思考若金属钠燃烧应该如何灭火? 【板书设计】
【答辩题目解析】
1.请你说明这堂课的设计思路? 【参考答案】
本节课我以“滴水生火”的实验进行导入,激发学生的学习兴趣;在新课教学环节,对于金属钠的物理性质,我采用直观展示法,引导学生观察思考并总结出其物理性质为:银白色固体,密度小,质软硬度小等。对于金属钠的化学性质,分别通过探究实验2、3,组织学生动手操作实验,并进行实验现象的观察及结果讨论,总结出:钠与氧气及水反应的事实。在巩固提高环节,教师由学生对“结构决定性质”这一认知为出发点,组织学生进行讨论,从微观上分析金属钠性质活泼的原因;为体现素质教育的理念,教师随机提问学生对本节课的收获,并预留与生活实际相关的问题。
2.如果金属钠燃烧,应该如何灭火? 【参考答案】
如果金属钠燃烧,应该用泥土或沙子盖灭,不能用水或干粉灭火器。因为过氧化钠与水及二氧化碳反应均能生成氧气。
【答辩题目解析】
1.你是如何导入新课的,为什么采用这种方法? 【参考答案】
本节课开始,我展示了魔术实验,采用了实验导入的方式。中学阶段学生的心理特征是:急于想了解本节知识的大概内容,想知道有哪些有趣的实验,喜欢观察鲜明、生动、不平常的实验。在观察过程中,他们的心理活动是好奇、好看、急于想了解实验中出现各种现象变化的原因,要求解惑的心情特别迫切。根据学生学习之始的心理活动特征,在学习的开始,可由教师演示实验或者学生实验,尽量挖掘富有启发性、趣味性的实验,巧布疑阵、设置悬念,就会使学生学习时明确目的、增强动机,起到“激其情、引其疑”的作用。
2.在醇生成烯烃的消去反应中,浓硫酸的作用是什么? 【参考答案】
浓硫酸的作用是作催化剂和脱水剂。
高中化学《氨气的性质》
高中化学《气体摩尔体积》
二、考题解析 【教学过程】 第一环节:导入新课
教师让学生观察课本P55页图3-29,第ⅥA族元素的气态氢化物的沸点随相对分子质量的增大而升高,符合前面所学规律,但H2O的沸点却反常,这是什么原因呢?由此导入本节课《氢键的形成》 第二环节:新课教学
学生自主阅读课本55页内容,回答:因为氢键的原因,导致水的沸点反常。教师提问:氢键是不是化学键呢?如果不是,那是什么? 学生回答:氢键是一种分子间作用力。
教师提问:氢键是如何形成的呢?给学生资料“氢键的成因”供学生参考讨论。
学生回答:当氢原子与电负性大的原子X以共价键相结合时,由于H—X键具有强极性,这时H相对带上较强的正电荷,而X相对带上较强的负电荷。当氢原子以其唯一的一个电子与X成键后,就变成无内层电子、半径极小的核。其正电场强度很大,以至当另一HX分子的X原子以其孤对电子向H靠近时,不但很少受到电子之间的排斥,反而互相吸引,抵达一定平衡距离即形成氢键。
教师提问:那么电负性大的原子X都有哪些呢? 学生通过课本寻找得到答案:N、O、F。
教师提问:总结起来,你们能不能总结出氢键的定义? 学生回答:半径小、吸引电子能力强的原子与H核之间的很强的作用叫氢键。通常我们可以把氢键看做一种比较强的分子间作用力。
教师提问:化学键都有各自的表示方法,那么氢键应该如何表示呢?再仔细看一下课本,我找学生来板演。学生板演:X—H···Y 教师总结:这位同学写的很对,你们是不是也写对了呢? 教师追问:那么问题来了,“X—H···Y”中X和Y可以是一样的吗? 学生回答:可以,比如刚才说的水中,就是O—H···O。
教师总结:很好,“X—H···Y”中X和Y可以是一样的,也可以不同。
教师提问:既然氢键是一种较强的分子间作用力,那么氢键的存在对物质的性质会有哪些影响呢? 学生阅读课本回答:氢键的存在可以使物质的熔沸点升高,对物质的溶解度也有一定的影响,比如水和乙醇能以任意比例互溶。教师总结补充:在极性溶剂中,如果溶质分子和溶剂分子间能形成氢键,就会促进分子间的结合,导致溶解度增大。例如:由于乙醇分子与水分子间能形成不同分子间的氢键,故乙醇与水能以任意比互溶。
第三环节:巩固提高
高中化学《气体摩尔体积》
一、考题回顾
二、考题解析
高中化学《气体摩尔体积》主要教学过程及板书设计
教学过程
(一)复习旧知 导入新课
复习公式N/NA=n=m/M,再一次明确物质的量的桥梁作用,同时考虑另外一个宏观物理量——体积。提出新问题:如何建立V与n之间的关系呢?引入新课《气体摩尔体积》。
(二)情境创设 新课讲授 1.提出问题:什么是气体摩尔体积?请学生根据摩尔质量的知识从理论上试着说出气体摩尔体积的概念、单位和计算公式,小组内讨论交流。并在ppt上给出气体摩尔体积的相关知识。
2.学生对课前计算结果和课上的实验的观察,从中归纳结论。
①观察课前对l mol物质体积的计算结果,能得出什么结论?②通过课前对电解一定量水得到氢气和氧气的物质的量比,结合课堂上对实验的观察,能得出什么结论。
教师总结学生回答并得出结论:同温同压时,l mol的气体——体积大,不同气体体积大致相同。固、液体——体积小,不同物质体积各不相同。对于气体,同温同压时:物质的量相同时体积也相同。
3.结合刚刚得出的结论提问:为什么在同温同压时,相同物质的量的不同气体,体积却大致相同?请小组内总结,从微观粒子角度考虑,决定体积的因素有哪些? 教师总结学生回答并进行讲解:决定物质体积的因素:①粒子数目(相同);②紧密排列时取决于粒子大小(固体和液体);③离子间距离很大时取决于粒子间距(气体)。并及时强调,气体分子间距离取决于外界的温度和压强,所以才会出现,分子数相同(即物质的量相同)时体积也相同。
4.通过数据进行讲解和得出结论:
0℃,101 kPa(标准状况),l mol任何气体的体积都约为22.4 L。即此时,气体摩尔体积Vm=22.4 L。提示学生从微观粒子角度考虑,并将模型中的小球换成大小不一的,进行展示,依据模型理解。通过模型中大小不一的小球帮助学生理解相同条件下,不同气体的Vm相同的本质原因。
(三)巩固提升
指导学生进行当堂训练。(四)小结作业
学生总结当堂课学到的知识。布置作业:课下总结物质的量n与质量、粒子数、气体体积之间的关系。板书设计
答辩题目解析
1.本节课的教学目标是什么? 【参考答案】
1.知识与技能目标:①能说出气体摩尔体积的概念;②能从宏观和微观两个方面说出影响气体体积的因素;③能进行气体摩尔体积的简单判断和计算。
2.过程与方法目标:①通过已有知识的迁移理解气体摩尔体积;②通过制作模型和动画演示理解各因素如何影响气体体积。
3.情感、态度与价值观目标:①进一步体会物质的量的“桥梁”作用;②培养分析推理能力,形成良好的学习习惯。
2.气体摩尔体积的大小是不是固定不变的,取决于什么? 【参考答案】
气体摩尔体积的大小并不是固定不变的,取决于温度和压强。在同温同压下,任何气体的气体摩尔体积大小相同。
高中化学《影响化学反应速率的因素》
一、考题回顾
二、考题解析
高中化学《影响化学反应速率的因素》主要教学过程及板书设计
教学过程
(一)创设情境,导入新课
展示图片:面包的标签。请学生观察保质期。
导入:根据我们的生活常识,我们知道在不同温度条件下,面包的保质期长短不同,那么温度是如何影响化学反应的快慢?除了温度还有哪些因素会影响化学反应的快慢呢?我们这节课就初步了解影响化学反应速率的因素。
(二)实验探究,新课讲授
展示图片:请学生回忆初中学过的不同金属单质(镁、铝、锌、铁)与稀盐酸的反应。
提问:在外界条件相同的情况下,不同的金属单质与稀盐酸反应,它们的快慢并不相同,这说明了什么? 结论:决定化学反应快慢的主要因素是反应物本身的性质。
教师:我们知道温度会影响化学反应速率,请大家阅读教材上的【实验2-5】的实验方案,思考一下实验方案的缺陷,改进一下实验的方案并验证温度对化学反应速率的影响。
结论:催化剂可以影响化学反应的速率。
教师补充:并不是所有的催化剂都能增大化学反应的速率,有的催化剂能减小某些反应的反应速率。能增大反应速率的催化剂叫做该反应的正催化剂,减小反应速率的催化剂叫做该反应的负催化剂。
请学生思考并交流讨论:下列事实中,什么因素影响了化学反应的速率?(1)铁矿石炼铁时要粉碎成矿粒。
(2)实验室进行化学反应时,常常把一些固体物质溶于水配成溶液再进行反应。(3)硫在空气中燃烧发出淡蓝色火焰,在纯氧中燃烧,发出明亮蓝紫色火焰。学生思考,交流,回答。
得出结论:固体表面积、反应物的状态、反应物的浓度等会影响化学反应的速率。(三)课堂小结,布置作业 师生共同总结本节内容。作业:调查生产生活中改变外界因素调节反应速率的实例,并用化学知识解释。板书设计
答辩题目解析
1.影响化学反应速率的因素有很多,最基本的因素是什么? 【参考答案】 反应物的浓度。
2.用本节课知识解释为什么食物要放在温度低的地方? 【参考答案】
食物腐败实质就是发生了一系列的化学反应,温度低,化学反应速率较低,食物不易腐败。
高中化学《明矾的净水作用》
一、考题回顾
二、考题解析
高中化学《明矾的净水作用》主要教学过程及板书设计
教学过程
(一)实验展示,激趣导入
多媒体视频展示明矾净水的实验:
取适量研磨细的明矾粉末加入到盛有河水的一个烧杯中搅拌,观察现象。
教师设疑:这种白色物质明矾是什么?它是如何起到净化水的作用呢?今天我们就一起来探究明矾的净水作用。教师板书课题“明矾的净水作用”。
第三篇:教师资格证面试试讲
自我介绍:
各位评委老师,上午好,我是_____号考生。说课:
今天我说课的题目是《____________》。首先我们来进行教材分析。教材分析:
本节课出自______________出版社出版的高中《________》第__册第__章第__节。
1、本节课分____个部分内容,分别是:___________________
2、本节课贯穿了______以后的整个教学,是学生进一步顺利、快捷操作____的基础,也是形成学生合理知识链的重要环节。(这条基本上通用)
3、本节课联系了________和_________,在以后学习______具有重要意义。
4、本节课是在学习______的基础上,进一步学习___________的关键。
(以上4条,灵活运用,不用全部说上就行。可以参考序言中的句子,主要是说学习本节课的意义。)接下来说一下本节课的教学目标。教学目标: 知识目标:
1、2、能力目标;
1、通过讲练结合,培养学生处理____、解决问题的能力。
2、分组学习方式,培养学生与他人沟通交流、分工合作的能力。
3、通过设置问题情境,提高学生分析和解决问题的能力。情感目标:
1、培养学生认真、细致的学习态度。
2、通过发现问题、解决问题的过程,培养学生合作精神,增强学生的求知欲和对学习计算机的热情。当我们对教材进行了分析并且了解了教学目标之后,就不难理解本节课的重点与难点 重点: 难点:
(对于重点、难点,依然是说出本节课的内容就行,可以参考本节课的题目和各部分的标题)
那么,究竟应该怎样来完成本节课的任务呢?下面说一下本节课的教法和学法。教法:
1、范例、结合引导探索的方法,激发学生的学习兴趣。
2、教师精讲、学生多练,体现了以学生为主体、教师为主导的教学原则。
3、采用类比法,引导学生发现问题,自主学习,从而体验到独立获取知识的喜悦感。
4、通过“教”“学”“放”“收”突破重点和难点。
(根据需要任意选取教法。2-3个就行。根据时间自行安排。)教学相长,本节课我所采用的学法主要有两个。学法:
1、主动学习法:举出例子,提出问题,让学生在获得感性认识的同时,教师层层深入,启发学生积极思维,主动探索知识,培养学生思维想象的综合能力。
2、反馈补救法:在练习中,注意观察学生对学习的反馈情况,以实现“培优扶差,满足不同。”
最后我们说一下本节课的教学过程。教学过程: 本节课在多媒体教室进行,所需教具是教师机---学生机、投影仪、黑板、等。我将本节课分为三个部分。
用约5分钟时间进行导入部分,主要是复习和引入新课。
用约20分钟时间进行正体部分。主要是通过讲练结合的方式完成对_____、______、______、________几部分的学习。
最后,用约5分钟的时间进行尾声部分,主要是小结和作业。或者说是,对本节课进行总结以及布置作业。
(1、关于讲练结合,如果是理论课,练就表示做习题,如果是操作课,就表示上机实际操作
(2、我是按一节课40分钟分配,待考证。
(3、大概模式是这样的,你根据时间要求自行取舍吧。
(4、声音一定要大,语速不能太快。对于教学目标、重点、难点等表示你说课流程的词汇要突出。但是,不要板书,浪费时间。(5、注意,偶尔要看一下评委,眼神交流。
最后要说“说课完毕”
对于试讲,引出这节课,之后顺手把本节课的题目写黑板上。要用力写清楚。如果觉得整节课讲不完,你可以说我今天主要讲____几部分。因为没有学生,所以讲的不要太散,要有思路.如果能显出你跟学生交流的过程就显一次,不然的话,就直接讲自己的。
第四篇:教师资格证面试如何“试讲”
面试中的“试讲”环节
一、形象:⑴青年人要阳光、正派,开朗、活泼;⑵洋溢青春气息,有自信,充满正能量。
二、试讲以“微课”形式进行,共10分钟。其中,最好有
一、两分钟要有点“激情”,带有艺术性(有限度的、和教学内容相关联的表演和夸张),这是得分点。
⑴结构完整,不是片断。教学过程各个环节(复习、导入;新授;练习;小结)不可以省略,但必须简化,保留核心要素。这是教学的设计的得分点。⑵
三、教学语言是必备的教学基本功之一,⑴普通话要尽可能标准些;⑵声音要洪亮,但是不能喊。⑶语速近似于演讲,绝对不可以太快,如果拿捏不好,必须多加演练。这是教学语言关键得分点!讲话不要半推半就、含混不清,防止自说自话。⑷在讲台上要有台风。语文教师要求更高,咬字清晰,语音悦耳,抑扬顿挫。⑸还要注意跟台下评委的眼神配合,眼睛的视线不要一直停留在讲稿上,要使台下的每一个评委都以为你在看他们,注视着他们。⑹要面带微笑,不要太严肃,但绝对不可以嘻皮笑脸。
四、面试时要衣着得体、打扮朴素,切记:不要佩带饰物。行为举止大方,不拘禁,也不能太嚣张,要给人留下稳重端庄的印象。
五、注意恰当运用肢体语言。不要僵直地站在讲台上,按美学的说法是,站立位置大部分时间应该在黄金分割点(0.618),当然,要在试讲前备课时有准备,把讲课内容的相关背景等知识了解到位,并把课的内容和这些背景结合起来,让背景知识在吸引人的同时把人引导到课本的内容上来。
六、配合教学内容适当板书:板书设计要突出主题,要有条理,用楷体书写,要工整、美观、适量,书写时注意“笔顺笔画”,千万不可以出现“错字白字”,尽可能和教学语言同步(这是得分点),最后别忘了“布置作业”。
最好能采用多媒体教学(试讲时不允许“真实呈现”,技巧上可以用自己的语言“具体形象”的复述出来),这通常是可以加分的,也能体现新课程的理念。
七、试讲完成以后还会有提问,基本上都是涉及到如何安排你所教的课程的,教学侧重点应该在哪里,如果学生出现了这样或那样的问题你该如何等等。不要慌张,首先肯定教师提出的问题,并结合以往的教学经验予以适当的重复和肯定,与此同时思考应对的策略。
回答的时候最好能有一个提纲,分几点来说明你的观点,显得层次鲜明,逻辑性强。点到即可,除非特别自信,不要过于展开。
心理素质和基本的知识水平:
1、着装。穿衣服一定不要太随便,也不要太花哨,很多评委看不惯。尽量整洁、斯文 点。如果你是女孩子,可以化点淡妆,但千万不要浓妆艳抹。
2、备课一定要充分,所谓的充分有三层意思:
(1)内容要稍多一些,多准备点不要紧,可跟椐试讲时间(10分钟)自己控制。
(2)试讲主要是评委想了解你的“口才”,当然也看看你有多少“料”。
(3)内容可以插入一些新颖、前沿的知识,同社会某些现状加以联系。这样会让评委感觉你很有“料”,能够把握最新进展,能够理论联系实际!
3、试讲之前一定要默练。即使你有足够的信心也要默练一次。当然,能面对自己的朋友演练就更好了,因为他们或许还能给你提点意见和建议呢!
4、写一手漂亮的“板书”或画“简笔画”会给一些评委留下一个很好的印象,二来,在写的过程中,可以想:接下来我要讲什么?也就是说,给自己一个缓冲的时间,消消紧张情绪,当然不要因紧张而写的飞快,慢点写不要紧,关键是把字写好,写的有条理。
5、讲话语速不要太快。这是试讲者共有的一个不足。如果真的试讲时语速突然加快了(有时面对下面一双双陌生的眼睛,你自己都无法控制),就停下来,做个深呼吸,效果还是不错的。
6、试讲完后,可能下面的评委会问你几个问题。这时,你“最熟悉最感兴趣的内容”的优越性就体现出来了,对于自己会的,不要抢着回答(为了证明自己懂),等人家完全问完了,自己再回答,当然可以停顿一下想想再说;对于自己确实不会的,一定不要乱说(不会本来就不好了,再乱说岂不是罪加一等),直接说:这个问题我确实不太清楚。在回答问题的时候,一定要保持面带微笑,这种微笑会让你省去很多麻烦的。
1、慢点:一紧张,绝对说话太快,人家不易听懂,时刻提醒自己说清楚,慢点,宁愿没说完。
2、目光:自信,眼光要看着听课得人,把他们想象成学生(根据授课对象决定)
3、熟悉:熟悉能够缓解紧张,做到可以脱稿。
4、专注:把思想专注在要说得内容上,全身心投入。
5、互动:适当和听者互动,提问等方式,试讲时可“自问自答”。
6、条理:注意教学过程各个环节之间的逻辑与衔接自然。
7、慢点,还是要再慢点。
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第五篇:高中英语教师资格证试讲面试
教师资格证中学英语面试阅读题真题一 1.试讲题目: 阅读教学试讲
内容: One day, a man called the taxi company to get a taxi to go to the airport, but after a very long time, the taxi did not come.He called the girl in the taxi company again.The girl in the taxi company said, “ the taxi has not come, but you need not to worry about it as the airplane is always late.” the man answered, “certainly, the airplane will be late this morning, because I happen to be flying it.”
基本要求:(1)朗读所给段落。(2)配合教学内容适当的板书。(3)针对该段落中的划线部分,设计相应的阅读后教学活动。(4)试讲时间: 约 10 分钟。(5)用英文试讲。
Teaching Plan Teaching Aims:
1.Knowledge aim: let students master the useful word and expressions in the reading material.2.Ability aim: let the students learn how to communicate with other persons in a more polite way.Learn the reading skills of skim and scan.3.Emotional aim: let the students to know the importance of respecting other people and communicate with other people in a good manner.Teaching Procedures:
Step one: lead-in(5 minutes)Show the students some pictures about the vehicles such as bike, taxi, and airplane and let them match the names with the pictures.Step two: new words and phrases(10 minutes)Write the new words and expressions from the reading material such as taxi, airport and let the students read after the teachers.Step three: while-reading(20 minutes)Ask the students about the main idea about the text through a quick reading about the whole text.Let the students do “T” or “F” exercise.Let the students conclude the main idea about each paragraph.Step Four: consolidation(9 minutes)Divide the whole class into two groups.Choose a team leader of each group.Let the group one act the whole scenario based on the reading material faithfully.And let group two have some adaptations of the scenario based on the reading material.Step Five: Homework(1 minutes)Let the students to write a composition about the ending of this story.Good morning, class, in the previous class, we have learned a reading text about the manner and ways of communication, do you still remember? And in this class, we are going to learn another text about manner and ways of communication as well as some names of vehicles in the reading material.First of all, I’d like you do the match exercise on the blackboard.As you can see that, on the left part of this blackboard, there are some names of automobiles, and on the right part of the blackboard, there are some pictures.Can you match the names on the left with the pictures on the right.Who can have a try? OK, Mike, tell me your choice.Great, your answer is right, this can be matched with this picture, and this name represents the taxi, and this is a picture about a plane.Very good,class, you have done a very good job.Then,I will read this text for you, please listen carefully, and try to get the main idea about the reading material.OK, after I read this text, I’d show you some new words and expressions in the reading material.The first word is “taxi”(在黑板上板书写上这个单词),this word means “出租车” in Chinese.And the second word is “airport” , before I tell you the meaning of this word, can you guess the meaning of this word? Class, who can have a try? We can combine what we have learned with what we are going to learn today.I will give you some hints, we say “by air” in English which means “乘飞机”,and “air” is related with “飞机”,and “port” is a place where we park a ship or other vehicles.So, class, after you have understood these, can anyone tell me the Chinese meaning of this word? Maria, please, Yes, very good.It means “飞机场” in Chinese.OK, since you have mastered the new words and expressions in the reading material, I will give you 2 minutes to read this whole text, and then I will check whether you understand it or not, now let’s start.Time is up, now, class, please listen to my statements carefully and judge whether it is true or false.OK, the first statement is that “one day, a woman called the taxi company to get a taxi to get him to go to the airport”, who can tell me whether this statement is right or wrong? Yes, great, Mike did a very good job.This statement is wrong, a man rather than a woman called the taxi company to get a taxi for him.Now, I will give my second statement, “ the man called the taxi company three times”, class, whether this statement is true or false? OK, Julia, yes, you are right, this is false.You two have done very well.Now, please listen to my final statement, “the man is a pilot”, who can tell me whether this statement is true or false.OK, Joe, your answer is “?”, I am afraid, you do not understand the whole text yet.Actually the man is a pilot in this story.Why I draw this conclusion? If you look at the final sentence in this reading material, you will find that “it” in this sentence means “airplane”, so the man is going to call a taxi to drive him to go to the airport, because he is a pilot, if he doesn’t not arrive at this airport on time, he will not be able to fly an airplane.也就是说,这个男人就是一个飞行员,如果他所呼叫的出租车没有准时到的话,他也就不能准时达到机场,他所开的航班也会延误。Now, can you understand the whole text? Class.If we must understand this reading material thoroughly, we should pay more attention to each and very fact in this reading material in order to get further understanding about this text.OK, in the following part, we will do a role play game.I will divide the whole class into two groups, the first group will act the whole scenario based on the plot in this reading material faithfully.The other group will make some adaptation based on this reading material to make the communication between the man and the woman in the text more polite and proper.Now I will give you three minutes, ready go!Time is up, class, now, I will check your work, can you act you play in front of the class?....OK, both groups have done a very good job.Class, have you noticed that if we communicate with each other in a way the group two did, we will have more understanding and mutual respect in our daily life.For example, in their adaptation, they changed the girl’s words.The girl said,“we will arrange another taxi for you instead of saying that as the airplane will be late.” from this example, we can see that we should pay attention to our behavior in communication with other people, if we want to get respects from other people, we should respect others first.Only by doing that, can we communicate with each other more politely and properly.OK, class, our class is going to be over, our homework is to write a story about the end of this story.What will happen to the man and the girl in the story? You can think about it after class.You can have a rest now.教师资格证中学英语面试真题二
试讲题目: 阅读教学试讲
内容: Class 9 had a great time on the school trip.They went to Blue Water Aquarium for the day.First they visited the visitors center and watched about sharks.Then they watched a dolphin show.After that, they went to the outdoor Pool and saw a big octopus.After lunch, they went to the Gift Shop and bought lots of gifts.Finally, tired but happy, they took the bus back to school.At the end of the day, the science teacher was very happy because the class monitor cleaned the bus after the trip.基本要求:(1)朗读所给段落。(2)配合教学内容适当的板书。(3)针对该段落中的划线部分,设计相应的阅读后教学活动。(4)试讲时间: 约 10 分钟。(5)用英文试讲。教师
资格证中学英语面试真题三
写作教学试讲
内容: Dear Editor, I am writing to say that I am against building a new zoo in our town.Zoos are terrible places for animals to live.I’ve visited a lot of zoos in my life, and I have never seen one I liked or one that was suitable for animals to live in.Just last week, I visited a zoo and couldn’t believe what I saw.The animals are kept in tiny cages and can hardly move at all.And they are only given food once a day.Is this a good way for animals to live? I don’t think so.Sincerely, Disgusted 基本要求:(1)朗读所给短信。(2)配合教学内容适当的板书。(3)针对该短信的体裁与结构特征,设计相应的书信写作教学活动。(4)试讲时间: 约 10 分钟。(5)用英文试讲。
教师资格证中学英语面试真题四
试讲题目: 词汇讲学试讲
内容: 在初中七年级下学期期末复习时,周老师希望帮助学生巩固以下的词汇;Soccer, strawberry,hamburgers, baseball, enjoy, difficult, boring, uncle,practice
基本要求:(1)朗读所给单词。(2)配合教学内容适当的板书。(3)针对所提供的词汇,设计词汇巩固性教学活动。(4)试讲时间: 约 10 分钟。(5)用英文试讲。
2013下半年全国教师资格证考试面试真题(中学英语:高中英语)结构化试题(5分钟)
1.前苏联教育家苏霍姆林斯基曾说过“教师的一言一行对学生都起着榜样作用”,谈谈你对这句话的理解。
2.学生喜欢老师,才会喜欢老师的课。谈谈你对这句话的看法。英文试讲题(语法讲解,10分钟)
One of the favorite events is the dog-sled race, in which teams of about six husky dogs pull long sleds at great speeds along a snowy track.One person runs behind the sled, shouting to the dogs to encourage them.The sound of the dogs barking, the calls of the drivers and the shouts of the crowd make an exciting Northern experience.The dogs are beautiful strong animals, with long, thick fur and many with blue eyes.读一遍短文,并对文中的语法进行讲解。答辩 试讲后英文问答(5分钟)
What’s the difference between the 3 words: shouting, barking and exciting? Do these 3 words have the same function?
一.词汇
I.Teaching Objectives 1.Knowlwdge Objectives(1)Help students know the collocation and meanings of the following words and phrases: embarrassed, instruction, far from, nothing like, looking forward to etc.(2)Help students acquire the use of adjective ending –ing and –ed.(3)Help students know the use of present continuous tense 2.Ability Objectives(1)Enable students to use these new words correctly in speaking and writing.(2)Enable students to use adjective ending –ing and –ed correctly in daily life to describe sth.II.Important Points 1.Master some phrase, and some new words 2.Master the use of adjective ending –ing and-ed III.Difficult Points Analyze components of a sentence
IV.Teaching Methods 1.Practice, discover, Asking and Answering, Explaining 2.Teaching Aids: text book
V.Teaching Procedures stepI Reading(1 minute)T: Good morning, boys and girls.First let’s read the new words and new phrases, please turn to page 113 and read the new words from enthusiastic to amazed, go(enthusiastic, amazing, information, website, brilliant, comprehension, instruction , embarrassed, description, amazed)OK.Very good!
Step II Lead-in(1 minute)T: Everybody, after we have studied this passage(My first day at senior high), we all know that the writer had a wonderful experience of his first day in senior high school.In this class let’s study some useful words and phrases.Phrases(look forward to, far from, nothing like)and words(bored/boring tired/tiring excited/exciting surprising/surprised interesting/interested embarrassed /embarrassing)
Step III Careful analyzing(8 minutes)(此处挑两个讲即可)Teaching Plan for Module 1(SEFC Book 1)OK.Well done!Now let’s look at some of the difficult points in the text!
The first one: 1.the classrooms in li kang’s school are amazing/ some students were embarrassed at first.Fellows we have already learned the adjective ending –ing and –ed in our junior high school, so let’s turn to page 7 and complete the sentences.Two minutes.(then the teacher check the answers), then let us look at grammar 2 the 2nd one choose the correct explanation according to the exercise we have done in page 7.ok it seems that you have a clear mind of the 2 kinds of endings, so let us find more examples in our text.(2nd paragraph, the classrooms are amazing, the3rd I don’t think I will be bored in Ms Shen’s class, the 4th paragraph some students were embarrassed at first)The next one.2„and Ms Shen’s method of teaching is nothing like that of the teachers at my Junior High school.(the sentence under the picture)Nothing like means,“丝毫不象”in chinese。
Eg: Math class is nothing like Chinese class, because the former is focus on logic thinking, the latter is main tell us how to think in a different way.The third.3.I'm looking forward to doing it!look forward to sth./doing sth.In this structure to is used as a preposition I look forward to hearing from you as early as possible.(do you remember some other this kind of phrases)
There are some other preposition phrases :(ask students the same kind of words they have learned in their junior school:do you remember some other this kind of phrases look forward to 盼望„„ turn to 求助于;转向;翻到„„pay attention to 注意„„ stick to 坚持get down to 开始认真干„„object to 反对point to 指向see to 处理,料理devote„to„ 贡献„„给„
Pay attention to ____(walk)along this risky bridge.There is not much time , lets get down to ___(walk)on this research.Teachers’whole life is devoted to_____(teach)We should object to ___(tell)lies.Step V Summary(1mins)T: In this class we have learned some useful phrases and words.do you still remember their meaning ?(nothing like , look forward to)and now are you clear how to use the adjective ending –ed and –ing.Step VI Homework Assignment(1 mins)T: After class, let’s have a revision of the present tense and preview listening and vocabulary, then do the exercises in text book.So much for this class, bye!
听力Listening(板书内容)Part 1:lead-in(板书内容)Step 1 Talk about the topic Give students enough background of the topic.Also let them familiar with the difficult words, especially new words.了解背景 熟悉主题
T: Good afternoon, my boys and girls.Welcome back to my class.I am so glad to see you again.Have you had a good weekend? Yeah!Then what did you do during the summer holiday? Sleep, watch TV, or travel with parents? I see.All of you had a wonderful weekend.Well, today I will introduce a new friend to you;let’s share what she did during the holiday.Now, listen to the tape carefully, and then I’ll ask you some questions.(教师说的内容,说完暂停!表示在进行听力,但不要太长,大约数1、2、3秒即可)
Hey, I’m your new friend Tiffany!Last Sunday, I went to the park with my friends for a picnic.We took several bread and some bottles of water with us for lunch.Of course we didn't forget to take some fruits and we even took some tomatoes and cucumbers.It took us thirty minutes to get there by bike.As it was a sunny day, there were lots of people in the park.Firstly, we climbed the mountain and went boating.Then it was the time for lunch, we took out the food and began to prepare our lunch.Though it was not cooked well, we ate happily.When we finished the picnic, we picked up the rubbish and threw it into the dustbin.We thought it was our duty to keep the good environment.We didn’t go home until it was dark.We all enjoyed ourselves.(听力录音材料)
T:Ok, do you understand the story?Yeah!Well, I will ask some you some questions.1.Why did Tiffany and her friends go to the park? 2 What did they take to the park? 3 what did they do after the picnic? T: The first question, now who can answer the questions in volunteer? oh, Lily.(pause)(平伸右手,手掌朝上,示意学生回答)Good!Go for a picnic.T: The second question, who want to try? Tom, please.(pause)(平伸右手,手掌朝上,示意学生回答)Very good!(右手伸出大拇指,示意回答得很棒)bread, bottles of water , fruits, tomatoes, cucumbers.Very good T: The third question, Can you find the answer? Ok, Susan.(pause)(平伸右手,手掌朝上,示意学生回答)yes, perfect.(双手伸出大拇指,示意回答得很棒)When we finished the picnic, we picked up the rubbish and threw it into the dustbin.Part 2 pre –listening(板书内容)
Guess the meaning of the following words(板书内容)猜测词意 扫清障碍 Now, you have understood the story well.Let’s look at the details of the text.① phases First of all, let’s look at the phrases in the text.1 Go for a picnic.Have food outdoors 2 By bike it’s an important phrase.“By” plus transport is the meaning of taking transport.For example By bike/train/bus/ship/airplane/foot, no, it is on foot, not by foot.3 pick up take sth up I picked up the money on the ground.Ok so much for the phrases.②important sentences 1.It took us thirty minutes to get there by bike.The sentence instruction is :It takes/took sb some time to do sth.And the question sentence of this instruction is: How long does/did it take sb to sth.For example: How long does it take you to go home? It usually takes me 20minutes to go home.Who can make a sentence?
T: Don’t be shy, just have a try.(环顾四周)Tom, do you want to have a try?(Pause)OK!How long does it take you to go to school? Yes, great!It takes me half an hour to go to school.Great, sit down please.2The next sentence is: We didn’t go until it was dark.The sentence instruction is : not until.what’s the meaning of the phrase?
直到...才。这句话的意思是,直到天黑我们才回家,而不是我们没回家直到天黑 I won’t go until you come back.直到你回来我才离去。Who want to try?Yeah, Bob.I didn’t go to sleep until I finished my homework.Great.Sit down.Well, you have mastered the sentences.Part 3: Post-listening Challenge yourself巩固提升 复述材料 挑战自我
T: Now, who can tell us” What’s the passage mainly about?” Please give your answer in a complete sentence with “The passage tells us„„„„„.” T: Who will try? Don’t be shy!(环顾四周)Tom, do you want to have a try?(Pause)OK!(Pretend to be listening)T: Very good!Your answer is wonderful!(右手伸出大拇指,示意回答得很棒)T: Tom said” The passage tells us______________________________________________”
Part 4: Homework Ok, time is limited, practices more after class.After learning the text, would you like to go for a picnic? Yes, then where do you want to go and what do you want to take? Make a plan after class, I’ll ask some students to share their plans next class.Ok, class is over.语法
Part 1: Independent reading 名词性从句的用法
T: Good morning/afternoon, boys and girls.Today, we’ll learn a new grammar style名词性从句Noun clauses.1.Read the play, which are mainly about this kind of grammar? Try to find the sentences.(pause)T: Ok.Stop here!Can you say one sentence? Now, who want to share your works? Ok, Tom, please.(手势语:平伸右手,手掌朝上,示意学生回答。做边听状,边板书第一个句子,这个要提前备课,就是您早就准备好的句子!)May we ask what you are doing in this country?
T: Very good,sit down, please.Now, who want to say the next? Ok, Lily, please.(同上,写第二个句子!)I didn’t know whether I could survive until morning.T: Very good,sit down, please.Now, who want to share the last one? Ok, Kate, please.(同上,写第三个句子!)The fact is that I earned my passage by doing sth.(课本上的三个句子)T: Very good,sit down, please.T: Now, we can see the Noun clause is a piece of cake, or we can say, it’s just so so.Are we right? Let’s look at the Ex 2 and try to finish the exercise of this part.If you can not solve the problem, first, lists problems of your own, then you can discuss in pairs;after discussion, you two can’t solve it, come to the blackboard and write it down.Part 2 comprehension 理解(写完板书,此时,就下去转一下,回来在黑板上写1-2个难句子,就当是学生写的)Difficult point 1: What do you think of the bet the brothers have made? Difficult point 2: What do you think will happen to Henry?
Research 1: students’ comprehension to the grammar.T: Very good, just now two of our students wrote down two sentences, they think the sentences are much harder to understand.Can we help them to under the two sentences? T: Now, who want to try? Ok, Susan, please.(手势语:平伸右手,手掌朝上,示意学生回答。)Which sentence do you want to explain to them?(Pause)Ok, the first one.(Pause)Ok, Susan’s explanation is very good!I must say that the bet is very interesting.sit down, please.T: Now, who can solve the second sentence?(Look around)
Research 2: With the teacher’s help to understand the grammar.T: Nobody? Really? Ok, let me help you.You can use “I must say that_____________” Here.Here, can” that” be left out?(Pause)Right!It can not be left out.Does it have any meanings?(Pause)Right.It has no any meaning.(此处用汉语解释语法现象,在讲解时可以在原句上画点记号什么的,目的是帮助,不是全部解决)Now, who can have a try in volunteer? Ok, Linda, please!(Pause)Ok, Linda’s explanation is very good!I must say that Henry will live a happy life.Sit down, please.T: Now, who can draw a conclusion to the grammar which we learnt in this text in volunteer? Nobody? Ok, let’s discuss in groups!
Part 3: The rule of the grammar(写完板书,此时,就下去转一下,回来看练习四,当堂测验)T: Well, Tom, it’s you again!Please!(Pause)Very good!Thank you, sit down please.名词性从句:缺什么补什么,不缺什么用“that”.(简析语法现象)And now let’s finish Ex 4, now I’ll ask some of you to finish two of them.1 The reason was ________________________.His concern is___________________________.T: Who will answer in volunteer? Bush and Black!OK!Come to the black board and finish them!(自己写上就OK了)1 The reason was that he met a strong wind.4 His concern is whether they can offer him a job.Very good!Quite right!Thank you, go back to your seat and sit down please.Part 4: Homework T: Ok, so much for this class.After class, please finish Ex 5 on page 21.That’s all for today, see you!
写作课:Writing class : Healthy eating(健康饮食)Teaching Objectives(教学目标):
一、知识技能目标:
总结平衡膳食的定义,并且能提出一些健康建议。
二、情感态度目标:了解有关营养饮食的基本常识和培养健康的饮食习惯。
教学重难点:
1.教学重点:如何区分健康食品以及垃圾食品并且会用英语表达;.2.教学难点: 教会学生如何自如表达自己的意见和建议并且帮助学生总结出平衡膳食的定义。
教学步骤:
Part 1 导入(Warming up)1.以一句话:“Everybody needs foods, so do I”及麦当劳、肯德基的相关饮食引入话题。(1 分钟)T: Good afternoon, boys and girls.Today we’ll talk about “Healthy eating(板书的内容)“.We have three meals everyday.Everybody needs foods, so do I.I want to know the following questions.The first question: Have you had lunch or breakfast in McDonald’s or KFC? The second question: Do you like the food there? The third question: Which one do you prefer?”
(The purpose of this part is to stimulate Ss’ interest and call their attention to the topic.)
Part 2 小组练习(Pair works)(3分钟)
T: Now, two students in pairs to ask each other about the above three questions, and then I’ll ask some of you to practice the dialogue in front of all of us.Now, let’s begin.(下去转转)T: Ok.Now, which pair wants to act this dialogue in volunteer?(Pause)Tom and Kate, please.Good!Sit down please.T: Any other pair?(Pause)Well, Linda and Susan, please.(Pause,pretend to be listening)Good!Sit down please.Part 3 头脑风暴(Brain storming)3分钟
1、Now, I will divide the whole class into two parts, the students on the left will be Group One, and the students on the right will be Group Two.Let’s compete between the two groups.One student will be theleader to collect the names of the food.Let’s see which group will get more names of the food.Who will be the leader? Ok!Tom and Kate.Ready? Go!(Pause)Ok!Now, let’s show the two sheets.(展示两张纸,写点对应的内容就行,一会好念,提前备课时就写好)Group One win the game!Well done!(把学生分成两组竞赛,看哪组的同学收集的食物单词多,然后教师教导朗读(2-3分钟)
Part 4 句型练习(Sentence structure practicing)(2分钟)
Now, I’ll show some of the names of food on the black board,(读其中的一些食物名称)let’s discuss which are junk food and which are healthy food? You can use the sentence structure” I think that(or the food name)is junk/healthy food because„.” And you can talk about “What is the name of the food? / What nutrition does it mainly contain?” Four students in a group, and let’s begin.(Pause, Junk food VS Healthy food,板书完成后,此时可下去转转)老师先展示如何使用句型:“I think that(or the food name)is junk/healthy food because„.”来描述什么是健康食品,什么是垃圾食品。然后把学生按4人分成一组进行讨论练习,老师给出了对话该涉及的内容范围:What is the name of the food? / What nutrition(营养物质)does it mainly contain?(2分钟)
Part 5: Activity task----make a survey活动任务---做调查报告(2分钟)T: Now I’ll give you a sheet.Ask 3 students around you about their dieting habits, and offer them some advice.You can use the sentence structure as” You should take less„, and you should have more„.”(Pause,可以下去转转)给学生发一张表格,引导学生按照表格询问周围3个左右的同学,了解同学间的饮食习惯,并能提出一些健康建议。调查的表格如下:(可忽略不备)
Part6.布置作业(1分钟左右)
T: Ok, let’s see the food Pyramid map together.(稍微暂停)From this picture you may well understand how to keep a balanced diet in our daily life.After class, write a composition about “Healthy Eating”.Ok, so much for this class.Class is over, see you!老师在课件上展示食物金字塔图,让学生了解饮食的营养应如何平衡,然后布置作业:让学生自己写一篇健康饮食的作文。
板书设计 Healthy Eating 1.Junk food VS Healthy food 2.Balanced diet
口语Speaking Step 1: Leading in: by discussion.Hi, boys and girls.We are now living in a highly developed world, with advanced culture and highly developed civilizations.But have you ever thought what are the base of all the culture and civilizations? Oh, yes, they are based on those which were created by our great, great grandfathers lived a long, long time ago.No one exactly knows what they lived on, what were their housing and home decoration conditions, what kind of tools they usually used in their production activities, and what entertainment they had in their spare time.Anyway, we can imagine!So now, let’s divide into groups of four and, with the help of your imagination, discuss what kinds of food the early man ate, what their housing conditions and home decorations were like, what tools they made and what entertainment they had in their spare time.Then I’ll ask some of you to report the results to the whole class.Step 2: role play T: Good, sit down.Please turn to page 72, look at the SPEAKING part.You should read it with your partner, then, do the roles play.(Teacher writes bb--middle)Making suggestions and giving advice: 1.What can you suggest? Maybe we/you could „„ 2.Can I ask you for some advice? I suggest(that)„„ 3.Can you help me decide? That’s a good idea.4.What do you have in mind? Well, but what about„„ Have you considered doing„„?
T: OK, time is up.In our daily life, we often ask someone for advice when we can’t make a decision.On the other hand, we often give other advice if they come to us for help.How can we ask for and give advice in English? Let’s look at the blackboard.There are several sentences about giving advice , please read it follow me.T: Make sure you can use these sentences when you are making suggestion.Who can give us a dialogue? Any volunteers? T: x x, you please, you can choose one of the situation in speaking part.T: Excellent
Step 3: Interview T: We are going to have an interview.You are a host and your partner is Helen.Now give a chat with Helen.I’ll give you several minutes to prepare.T: Time is up.Which pair would like you have a try? Lily, your group please.Q.What skills do you think young people need to succeed in life? A.Set Goals, plan for success, and believe in themselves.Q.In this high-tech world, what’s the most important aspect of education? A.A well-rounded education with a broad view of the world.Q.Who was the biggest influence in your life? Why? A.My parents, Sir Edmund Hillary Q.What’s the toughest part of your job? A.Finding time to do all that I want.Q.When you were a teenager, what place in the world did you most want to visit, and have you traveled there yet? Was it as wonderful as you thought it would be? Why or why not? A.The magnetic North Pole was my dream.I am the first woman to walk there alone without support.I wrote a best selling book about my journey with my polar bear dog Charlie who saved my life from polar bears.When I finally arrived after having survived storms, a tent fire, frozen fingers, broken sea ice and polar bears I had a tremendous feeling of achievement.I didn’t matter that I was first.It mattered that I had a goal, a plan and therefore I stood at the Pole.T: Very good.Thank you.I will ask another two students.Any volunteers? Lily, your group please.„
Blackboard design Speaking Step 1 Discussion Step 2: Role play 1.What can you suggest? Maybe we/you could„„ 2.Can I ask you for some advice? I suggest(that)„„ Step 3: Interview
阅读reading Step 1 Lead-in 导入 Brainstorm Class begins.Good morning, boys and girls.Today we will learn a new unit together.First let’s get to know the man, who is called Mr.Nature.He is very emotional.When he is happy, he stays calm and shows us beautiful natural scenery.But when he gets angry, he becomes a troublemaker and causes many natural disasters.Do you know the meaning of natural disaster? Yes, it means自然灾害, for example, the earthquake happened in Ya’an last month, which caused great damage.Besides earthquake, what other kinds of natural disasters do you know? Please brainstorm and try to think of as many natural disasters as you can.Suggested answers: typhoon 台风/ volcanic eruption 火山爆发/thunderstorm 暴风雨 Flood 洪水/tsunami 海啸/ drought 干旱/ hurricane(tornado)飓风,龙卷风 Guys, you’ve done a great job.Have you experienced any natural disaster we mentioned just now? You please.Suggested answers: You have experienced flood in summer.What did you see? The flood water covered the whole city and you had to stay at home.Can you describe your feelings at that time? You felt frightened and nervous.Step 2 Reading 1)Skimming/Listening Yes, I totally agree with you.In most cases, natural disasters can be very frightening.Today we will read a passage about natural disasters.Please take out your handout and listen to the tape.After listening, please tell me the main idea of this passage and in what order this passage is organized.You only have 2 minutes.Ready? Go!Time is up.Who would like to tell us the main idea? Tom, would you please have a try? Suggested answers: This passage talks about Tangshan earthquake, the largest earthquake of 20th century.Very good? Can you tell me in what order this passage is developed? In order of time.How do you know that? Because the writer first describes strange things in the first part and then tells us the city was destroyed by the earthquake.Lastly, he says the army came after earthquake.Yes, you are right.2)Scanning In the first part, the writer tells us strange things happened before the earthquake.We know that before some natural disaster, there are sometimes warning signs from nature.If we have such kind of knowledge, we can reduce the damage.Please go through the first paragraph quickly and try to figure out what signs did the author mention? You only have one minute.Here we go!Now let’s read for more details.Let’s go through the whole passage and try to find the answers to the following three questions.Step 2 Fast reading 泛读
Read the text quickly and try to finish the following exercises.A.New words or phrases burst: break open because of pressure from inside at an end: finished nation: all the people in the country steam: gas that hot water gives out in ruins: destroyed extreme: very great in degree useless: of no use shocked: surprised very much rescue: save somebody or something from danger shelter: a place that protects you from the weather or danger B.Questions 1.When did the Tangshan earthquake happen? Suggested answers: The earthquake happened at 3:42 am on July 28, 1976.2.How many people were killed or injured in the earthquake? Suggested answers: More than 400, 000 people were killed or injured in the earthquake.3.Was all hope lost? How did the army help the people there after the earthquake? Suggested answers: No, all hope was not lost.The army sent 150,000 soldiers to Tangshan to help the rescue workers.The army organized teams to dig out those who were trapped and to bury the dead.Step 3 post-Reading 1.Discussion Suppose an earthquake happens now, what should we do to keep ourselves safe? Please discuss natural wonders in groups and your discussion should be based on the two questions.This time, the group leader should take down your group members’ ideas and sum them up in your own words.Later, we will share your ideas with all of us here.Understand me? Time is up.Any group would like to share your idea with us? Suggested answers: 1.Don’t be nervous and keep calm.2.Don’t try to run out of the classroom at once.3.Protect your head by putting your school bag on your head.4.Squat under your desk.5.Leave the classroom after the earthquake.2.Interview Have you noticed that news reporters and interviewers play an important role in keep us informed after Ya’an earthquake happened? Next, please choose a paragraph and act out an interview between a reporter and survivor from the Tangshan earthquake.Make a dialogue with your partner.I will give you three minutes and then I will invite some of you to act itout.Step 4 Summary and assiagnment We have done a lot of things today.Firstly, we have talked about„.Then, we discussed.Next, we learned some useful words and expressions.Here comes your assignment: 1.Retell the passage.2.Search the Internet to find more information about earthquake.