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高三课件

发布时间: 2023.06.09

高三课件5篇。

资料一般指可供参考作为根据的材料。在日常的学习工作中,我们都会用到各方面的资料。有了资料,这样接下来工作才会更上一层楼!那么,关于资料你了解哪些内容呢?下面,我们为你推荐了高三课件5篇,供有需要的朋友参考借鉴,希望可以帮助到你。

高三课件【篇1】

一、说教材

《陈情表》是李密向晋武帝司马炎请求批准他不去做官的表章。本单元四篇文章都是情酣意浓的千古抒情妙文,鲁迅先生说过:“能憎能爱才能文。”文章不是无情物,刘勰也说:“情为文之经。”只有注入感情,文章才能得以流传。同样,读至情之文也需要感情的投入,用心与作者交流,才能有更大的收获,才能感受到优秀作品带给人们的震魂摄魄的力量,引发人们跨越时空去思考人生与社会。《陈情表》亦如此。

二、说学情

文言文的教学常常被师生们视为畏途,主要是教学效果很难呈现出来。其实,纵观学生的情况,可以看出学生心理上主要存在四道障碍:

1、字面上,文言字词的理解是一道障碍;

2、诵读上,章法与句法是一道障碍,这其中也包含了对文言特殊句式的理解方面的障碍;

3、内容上,古今文化的一些差异也带来了一定的理解障碍,比如对文中一些历史典故的理解等;

4、鉴赏方面,对于文言课文中传递出来的思想性无法把握,不能对文章做更深广义上的解读。不过,前三道障碍通常可以在原有的知识基础上相对容易解决,最后一道障碍则需要老师适当的引导,师生配合解决。

鉴于以上对教材及学情的分析,结合《语文新课程标准》要求中学生能阅读浅易文言文这一原则,我确定了以下教学目标:

指导学生掌握文中出现的重要的文言实词与文言虚词及常见的古汉语句式。

采用多种方法反复诵读,通过发挥学生自主性作用,帮助学生体悟主旨,掌握课文结构及文章章法句法。

引导学生体会当时李密地处境和李密祖孙间真挚深厚的感情,正确认识“孝”,继承孝敬父母长辈的中华传统美德。

三、说教学方法

主要指导学生用“四读法”(速读、诵读、品读、研读)并结合适度的课堂讨论,让学生在自主、合作、探究的过程中完成对课文的理解。

四、说教学过程

(一)导入

1、用幻灯片打出以下内容:

①“至性之言,自尔悲恻动人。”

②“俱从天真写出,无一字虚言驾饰”。

问学生中有没有人知道这是评价哪一篇文章的,最后明确是《陈情表》,接着介绍苏轼所言:读《出师表》不堕泪者必不忠,读《陈情表》不堕泪者必不孝。之后,出示课题。

(兴趣是最好的老师,以此内容导入,能充分调动学生的积极性与好奇心,好奇心也会成为学习知识的一种内在动力。)

2、解题

结合课文注释,认识“表”这种文体。

(二)介绍作者及写作背景

(阅读古代散文,要“知人论世”,联系作者的相关情况和时代背景,只有了解作者的生活经历和当时的处境,才能感受他们伟岸的人格,才能理解他们复杂的思想感情。)

(三)速读课文

速读要求:

1、用笔标记出读不准的字音。

2、尽可能地理出文章的结构思路,大致弄清文章所写的内容。

(四)诵读课文

为唤起晋武帝的怜悯之心,作者围绕“情”“孝”二字,凄切婉转的表明心意,反复陈述自己家庭不幸,和祖母相依为命的苦况亲情,表达对新朝宠遇的感激涕零以及孝顺祖母的衷情,情真意切,感人肺腑。诵读时,要注意文章层次,做到情发于心地诵读。

本文以四字句为主的同时,又杂以三、五、六、七、八、九、十、十一字的句式,构成了骈散结合的句式特点,诵读时要读出节奏感。

播放课文朗读录音,让学生正音,并比较此前自己的阅读处理与录音有何异同。

(五)品读课文

借助注释,积累词义,疏通课文。

从文中找出后世常引用的文句,加以体味,并尝试写一段话,陈述自己的某种无奈之情。(课后练习三)

轻声朗读课文,把自己认为好的语句勾画出来,并说说它们有什么特点。

(叶圣陶先生在《文艺作品的鉴赏》中谈到阅读教学时说:“文字是一道桥梁,这边的桥堍站着读者,那边的桥堍站着作者。通过这道桥梁,读者才会和作者会面,不但会面,并且了解作者的心情,和作者的心情相切合”。可见,好的构思,还要用恰当的语言来表达,才能发挥文章感人的力量。鉴于此,对于文章语言的赏析应该是非常必要的。)

(六)研读课文

让学生思考:中国古代统治者注重以孝治国,忠孝两全往往被看作一种传统美德,谈谈你对这个问题的看法。(此题没有标准答案,意在让学生讨论一下对“孝”的看法,只要学生适当联系实际,言之成理,持之有故即可。)

(这是一个探究性的题目,在越来越重视对学生能力培养的今天,我在教学中设计这一环节,也是本着新大纲中要求的“要致力于学生语文素养和整体能力的提高,重视积累,感悟和熏陶,重视语文应用能力和语感的培养”来设计的。探究的终极指向也是要学生联系当前社会实际,注重学生的实践能力和实际体验。当然,思维起于文本也要归于文本,所以这样的拓展延伸也是必须紧密联系文本的。)

(七)总结

正如亚里士多德所说:“只有在适当的时候,对适当的事情,对适当的人,在适当的时机下,以适当的方式发生的感情,才是适度的最好的感情。”李密正是抓住了几个“适当”,既表达了对晋武帝的感激之情,又申述了终养祖母以尽孝道的决心,最终才深深地打动了晋武帝。

(八)布置作业

巩固本文所学内容。

以“亲情”为话题写一篇作文。

高三课件【篇2】

教学准备

教学目标

1.知道力的概念及矢量性,会作力的图示.

2.了解重力产生的原因,会确定重力的大小和方向,理解重心的概念.

3.了解自然界中四种基本相互作用.

教学重难点

1.力的概念及矢量性,作力的图示.

2.重力产生的原因,确定重力的大小和方向,重心的概念,自然界中四种基本相互作用.

教学过程

[知识探究]

一、力和力的图示

[问题设计]

做一做以下实验,看看会发生什么现象,总结力有哪些作用效果.

(1)小钢球在较光滑的玻璃板上做直线运动,在小钢球的正前方放一磁铁,小钢球靠近磁铁时;

(2)在与小钢球运动方向垂直的位置放一块磁铁;

(3)分别用手拉和压弹簧.

答案

(1)小钢球的速度越来越大;

(2)小钢球的速度方向发生了变化;

(3)用手拉弹簧,弹簧伸长;用手压弹簧,弹簧缩短.

力的作用效果有:使物体的运动状态发生变化或使物体发生形变.

[要点提炼]

1.力的特性

(1)力的物质性:力是物体间的相互作用,力不能脱离物体而独立存在.我们谈到一个力时,一定同时具有受力物体和施力物体.

(2)力的相互性:力总是成对出现的.施力物体同时又是受力物体,受力物体同时又是施力物体.

(3)矢量性:力不仅有大小而且有方向.

2.力的作用效果:改变物体的运动状态或使物体发生形变.

说明只要一个物体的速度变化了,不管是速度的大小还是速度的方向改变了,物体的运动状态就发生变化.

3.力的表示方法

(1)力的图示:用一条带箭头的线段(有向线段)来表示力.

①线段的长短(严格按标度画)表示力的大小;②箭头指向表示力的方向;③箭尾(或箭头)常画在力的作用点上(在有些问题中为了方便,常把物体用一个点表示).

注意(1)标度的选取应根据力的大小合理设计.一般情况下,线段应取2~5个整数段标度的长度.(2)画同一物体受到的不同力时要用同一标度.

(2)力的示意图:用一条带箭头的线段表示力的方向和作用点.

二、重力

[问题设计]

秋天到了,金黄的树叶离开枝头总是落向地面;高山流水,水总是由高处流向低处;无论你以多大的速度跳起,最终总会落到地面上……试解释产生上述现象的原因.

答案地面附近的一切物体都受到地球的吸引作用.正是由于地球的吸引才会使物体落向地面,才会使水往低处流.

[要点提炼]

1.重力定义:由于地球的吸引而使物体受到的力,叫做重力.

2.产生原因:重力是由于地球的吸引而使物体受到的力.但不能说成“重力就是地球对物体的吸引力”.

3.大小:G=mg,g为重力加速度,g=9.8m/s2,同一地点,重力的大小与质量成正比,不同地点重力的大小因g值不同而不同.(注意:重力的大小与物体的运动状态无关,与物体是否受其他力无关)

4.方向:重力的方向总是竖直向下的(竖直向下不是垂直于支撑面向下,也不是指向地心).

5.作用点:在重心上.

(1)重心是物体各部分所受重力的等效作用点.

(2)重心位置与质量分布和物体形状有关,质量分布均匀、形状规则的物体的重心在物体的几何中心上.重心可以不在(填“可以不在”或“一定在”)物体上.

高三课件【篇3】

教学重点:理解等比数列的概念,认识等比数列是反映自然规律的重要数列模型之一,探索并掌握等比数列的通项公式。

教学难点:遇到具体问题时,抽象出数列的模型和数列的等比关系,并能用有关知识解决相应问题。

教学过程:

一.复习准备

1.等差数列的通项公式。

2.等差数列的前n项和公式。

3.等差数列的性质。

二.讲授新课

引入:1“一尺之棰,日取其半,万世不竭。”

2细胞分裂模型

3计算机病毒的传播

由学生通过类比,归纳,猜想,发现等比数列的特点

进而让学生通过用递推公式描述等比数列。

让学生回忆用不完全归纳法得到等差数列的通项公式的过程然后类比等比数列的通项公式

注意:1公比q是任意一个常数,不仅可以是正数也可以是负数。

2当首项等于0时,数列都是0。当公比为0时,数列也都是0。

所以首项和公比都不可以是0。

3当公比q=1时,数列是怎么样的,当公比q大于1,公比q小于1时数列是怎么样的?

4以及等比数列和指数函数的关系

5是后一项比前一项。

列:1,2,(略)

小结:等比数列的通项公式

三.巩固练习:

1.教材P59练习1,2,3,题

2.作业:P60习题1,4。

第二课时5.2.4等比数列(二)

教学重点:等比数列的性质

教学难点:等比数列的通项公式的应用

一.复习准备:

提问:等差数列的通项公式

等比数列的通项公式

等差数列的性质

二.讲授新课:

1.讨论:如果是等差列的三项满足

那么如果是等比数列又会有什么性质呢?

由学生给出如果是等比数列满足

2练习:如果等比数列=4,=16,=?(学生口答)

如果等比数列=4,=16,=?(学生口答)

3等比中项:如果等比数列.那么,

则叫做等比数列的等比中项(教师给出)

4思考:是否成立呢?成立吗?

成立吗?

又学生找到其间的规律,并对比记忆如果等差列,

5思考:如果是两个等比数列,那么是等比数列吗?

如果是为什么?是等比数列吗?引导学生证明。

6思考:在等比数列里,如果成立吗?

如果是为什么?由学生给出证明过程。

三.巩固练习:

列3:一个等比数列的第3项和第4项分别是12和18,求它的第1项和第2项

解(略)

列4:略:

练习:1在等比数列,已知那么

2P61A组8

高三课件【篇4】

一、教材分析:

本节课是《普通高中课程标准实验教科书数学》(人民教育出版社、课程教材研究所A版教材)选修2-2中第§1.1.3节.作为导数概念的下位概念课,它是在学生学习了上位概念——平均变化率,瞬时变化率,及刚刚学习了用极限定义导数基础,进一步从几何意义的基础上理解导数的含义与价值,是可以充分应用信息技术进行概念教学与问题探究的内容.导数的几何意义的学习为下位内容——常见函数导数的计算,导数是研究函数中的应用及研究函数曲线与直线的位置关系的基础.因此,导数的几何意义有承前启后的重要作用.

二、教学目标

【知识与技能目标】

(1)知道曲线的切线定义,理解导数的几何意义;

——让学生感知和初步理解函数在处的导数的几何意义就是函数的图像在处的切线的斜率,即=切线的斜率.

(2)导数几何意义简单的应用.

——用导数的几何意义解释实际生活问题,初步体会“逼近”和“以直代曲”的数学思想方法.

【过程与方法目标】

(1)回顾圆锥曲线的切线的概念,复习导数概念,寻找在处的瞬时变化率的几何意义;

(2)观察P7上探究问题,利用几何画板进行探究,由学生参与操作,发现割线变化趋势,分析整理成结论;

(3)通过学生经历或观察感知由割线逼近“变成”切线的过程,理解导数的几何意义;

(4)高台跳水模型中,利用导数的几何意义,描述比较在,,处的变化情况,达到梳理新知的目的,渗透“以直代曲”的数学思想;

(5)通过分析导数的几何意义,研究在实际生活问题中,用区间较小的范围的平均变化率,来解决实际问题的瞬时变化率.

>>《导数的几何意义高三数学说课稿》这篇教育教学文章来自[淘教案网]www.taojiaoan.com收集与整理,感谢原作者。

【情感态度价值观目标】

(1)经过几何画板演示割线“逼近”成切线过程,让学生感受函数图像的切线“形成”过程,获得函数图像的切线的意义;

(2)利用“以直代曲”的近似替代的方法,养成学生分析问题解决问题的方法,初步体会发现问题的乐趣;

(3)增强学生问题应用意识教育,让学生获得学习数学的兴趣与信心.

三、重点、难点

重点:导数的几何意义,导数的实际应用,“以直代曲”数学思想方法.

难点:对导数几何意义的理解与掌握,在每处“附近”变化率与瞬时变化率的近似关系的理解.

关键:由割线趋向切线动态变化效果,由割线“逼近”成切线的理解.

四、教学过程

教学环节

教学内容

师生互动

设计意图

温故知新

诱发思考

1.初中平面几何中圆的切线的定义;

2.公共点的个数是否适应一般曲线的切线的定义的讨论;

3.用幻灯片演示圆的切线和一般曲线的切线情形.

回顾:初中平面几何中圆的切线的定义是什么?

思考:这种定义是否适用于一般曲线的切线呢?

提问:你能否用你已经学过的函数曲线的切线举出反例?

强调:圆是一种特殊的曲线,这种定义并不适用于一般曲线的切线.

教师提出三个层次的问题,由学生思考后回答,诱发学生对圆的切线定义的局限的反思;

借助幻灯片演示感知曲线切线定义的各种情形,为寻找切线的逼近定义提供“亲身”经历.

实验观察

思维辨析

演示实验:如图,当点(,,,)没着曲线趋近点时,割线的变化趋势是什么(借助几何画板由割线逼近成切线的过程).

演示过程:

板书:1.曲线的切线的定义

当时,割线(确定位置),

PT叫做曲线在点P处的切线.

2.导数的几何意义

函数f(x)在x=x0处的导数是切线PT的斜率k.即

1.交流讨论观察结果;

2.思考割线的斜率与切线的斜率有什么关系;

3.参与分析和推导函数f(x)在x=x0处的导数的几何意义.

1.让学生参与曲线的切的逼近发现过程,初步体会曲线的切线的逼近定义;

2.初步感知数学定义的严谨性和几何意义的直观性;

3.让学生利用已学的导数的定义,推出导数的几何意义,让学生分享发现的快乐.

观察发现思维升华

板书:3.数学思想方法:“以直代曲”思想方法.即

曲线上某点的切线近似代替这一点附近的曲线(通过几何画板演示).

1.教师诱导学生观察,并下结论,教师强调,“以直代曲”的数学思想方法,是微积分学中的重要思想方法.

2.放大点P的附近,感受切线近似于曲线.

1.让学生直观感知:在点P的附近,PP2比PP1更接近曲线f(x),PP3比PP2更接近曲线f(x),…….过点P的切线PT最贴近P附近的曲线f(x).

2.体会“以直代曲”.

学而习之小试牛刀

例1:求抛物线在点处的切线方程.

变式训练:过抛物线的点处的切

线平行直线,

求点的坐标.

1.引导学生分析:切线在切点A处的斜率应该是什么?

2.由学生根据导数的定义式求函数在x=1处的导数,教师写出规范的板书;

3.提出变式训练.

1.初步体会导数的几何意义;

2.回顾用导数的定义求某处的导数;

3.设切点,由求知数来表示导数;

4.规范解题格式

高三课件【篇5】

一、本课时在教材中的地位及作用

教材采用北师大版(数学)必修1,函数作为初等数学的核心内容,贯穿于整个初等数学体系之中。本章节9个课时,函数这一章在高中数学中,起着承上启下的作用,它是对初中函数概念的承接与深化。在初中,只停留在具体的几个简单类型的函数上,把函数看成变量之间的依赖关系,而高中阶段不仅把函数看成变量之间的依赖关系,更是从“变量说”到“对应说”,这是对函数本质特征的进一步认识,也是学生认识上的一次飞跃。这一章内容渗透了函数的思想,集合的思想以及数学建模的思想等内容,这些内容的学习,无疑对学生今后的学习起着深刻的影响。

本节课《函数的概念》是函数这一章的起始课。概念是数学的基础,只有对概念做到深刻理解,才能正确灵活地加以应用。本课从集合间的对应来描绘函数概念,起到了上承集合,下引函数的作用。也为进一步学习函数这一章的其它内容提供了方法和依据

二、教学目标

理解函数的概念,会用函数的定义判断函数,会求一些最基本的函数的定义域、值域。

通过对实际问题分析、抽象与概括,培养学生抽象、概括、归纳知识以及逻辑思维、建模等方面的能力。

通过对函数概念形成的探究过程,培养学生发现问题,探索问题,不断超越的创新品质。

三、重难点分析确定

根据上述对教材的分析及新课程标准的要求,确定函数的概念既是本节课的重点,也应该是本章的难点。

四、教学基本思路及过程

本节课《函数的概念》是函数这一章的起始课。概念是数学的基础,只有对概念做到深刻理解,才能正确灵活地加以应用。本课(借助小黑板)从集合间的对应来描绘函数概念,起到了上承集合,下引函数的作用,也为进一步学习函数这一章的其它内容提供了方法和依据。

⑴学情分析

一方面学生在初中已经学习了变量观点下的函数定义,并具体研究了几类最简单的函数,对函数已经有了一定的感性认识;另一方面在本书第一章学生已经学习了集合的概念,这为学习函数的现代定义打下了基础。

函数在初中虽已讲过,不过较为肤浅,本课主要是从两个集合间对应来描绘函数概念,是一个抽象过程,要求学生的抽象、分析、概括的能力比较高,学生学起来有一定的难度,加上学生数学基础较差,理解能力,运算能力等参差不齐等。

⑵教法、学法

1、本节课采用的方法有:

直观教学法、启发教学法、课堂讨论法。

2、采用这些方法的理论依据:我一方面精心设计问题情景,引导学生主动探索,另一方面,依据本节为概念学习的特点,以问题的提出、问题的解决为主线,设置问题,倡导学生主动参与,通过不断探究、发现,在师生互动、生生互动中,让学习过程成为学生心灵愉悦的主动认知过程,充分体现“教师为主导,学生为主体”的教学原则。

3、学法方面,学生通过对新旧两种函数定义的对比,在集合论的观点下初步建构出函数的概念。在理解函数概念的基础上,建构出函数的定义域、值域的概念,并初步掌握它们的求法。

⑶教学过程

(一)创设情景,引入新课

情景1:提供一张表格,把本班中考得分前10名的情况填入表格,

我报名次,学生提供分数。

情景2:西康高速汽车的行驶速度为80千米/小时,汽车行驶的距离

y与行驶时间x之间的关系式为:y=80x

情景3:安康市一天24小时内的气温随时间变化图:(图略)

提问(1):这三个例子中都涉及到了几个变化的量?(两个)

提问(2):当其中一个变量取值确定后,另一个变量将如何?(它的

值也随之唯一确定)

提问(3):这样的关系在初中称之为什么?(函数)引出课题

[设计意图]在创设本课开头情境1、2的时候,我并没有运用书中的前两个例子。第一个例子我改成提供给学生一张中考成绩统计单。是为了创设和学生生活相近的情境,从而引起学生的兴趣,调节课堂气氛,引人入胜,第二个例子我改成一道简单的速度与时间问题,是因为学生对重力加速度的问题还不是很熟悉。同时这两个例子并没有改变课本用三个实例分别代表三种表示函数方法的意图。

这样学生可以从熟悉的情景引入,提高学生的参与程度。符合学生的认知特点。

(二)探索新知,形成概念

1、引导分析,探求特征

思考:如何用集合的语言来阐述上述三个问题的共同特征?

[设计意图]并不急着让学生回答此问,为引导学生改变思路,换个角度思考问题,进入本节课的重点。这里也是教师作为教学的引导者的体现,及时对学生进行指引。

提问(4):观察上述三问题,它们分别涉及到了哪些集合?(每个问题都涉及到了两个集合,具体略)

[设计意图]引导学生观察,培养观察问题,分析问题的能力。

提问(5):两个集合的元素之间具有怎样的关系?(对应)

及时给出单值对应的定义,并尝试用输入值,输出值的概念来表达这种对应。

2、抽象归纳,引出概念

提问(6):现在你能从集合角度说说这三个问题的共同点吗?

[设计意图]学生相互讨论,并回答,引出函数的概念。训练学生的归纳能力。

板书:函数的概念

上述一系列问题,始终倡导学生主动参与,通过不断探究、发现,在师生互动,生生互动中,在学生心情愉悦的氛围中,突破本节课的重点。

3、探求定义,提出注意

提问(7):你觉得这个定义中应注意哪些问题(两个非空数集,唯一对应等)?

[设计意图]剖析概念,使学生抓住概念的本质,便于理解记忆。

2、例题剖析,强化概念

例1、判断下列对应是否为函数:

(1)

(2)

[设计意图]通过例1的教学,使学生体会单值对应关系在刻画函数概念中的核心作用。

例2、(1);

(2)y=x—1;

(3);

(4)

[设计意图]首先对求函数的定义域进行方法引导,偶次方根必需注意的地方,其次,通过(2)(3)两道题,强调只有对应法则与定义域相同的两个函数,才是相同的函数。而与函数用什么字母表示无关,进一步理解函数符号的本质内涵。

例3、试求下列函数的定义域与值域:

(1)

(2)

[设计意图]让学体会理解函数的三要素:定义域、值域、对应法则。

4、巩固练习,运用概念

书本练习P25:练习1,2,3。P28:练习1,2

布置作业:A组:1、2。B组1。

5、课堂小结,提升思想

引导学生进行回顾,使学生对本节课有一个整体把握,将对学生形成的知识系统产生积极的影响。

6、板书设计:借助小黑板,时间的合理分配等(略)

五、教学评价及反思

我通过对一系列问题情景的设计,让学生在问题解决的过程中体验成功的乐趣,实现对本课重难点的突破,教学时间分配合理,为使课堂形式更加丰富,也可将某些问题改成判断题。在学生分析、归纳、建构概念的过程中,可能会出现理解的偏差,教师应给予恰当的梳理。

本节课的起始,可以借助于多媒体技术,为学生创设更理想的教学情景(结合各学校的硬件条件)。

GZ85.com扩展阅读

三字经课件5篇


资料的定义范围较大,可指代生产资料。当一次学习即将开始时,我们通常会接触到一些资料。有了资料才能更好的在接下来的工作轻装上阵!所以,关于资料你究竟了解多少呢?经过搜索整理,小编为你呈现“三字经课件5篇”,欢迎大家参考阅读。

三字经课件【篇1】

关于《三字经》教学教案

通过学习《三字经》,体会和理解《三字经》中积极的道理,感受中华民族的优秀文化传统。

教学内容:介绍《三字经》

教学目标: 交流《三字经》的诵读与理解,激发学生爱诵读三字经,初步感受中华传统文化的丰富内涵。

教学过程:

一、引入 、介绍《三字经》

《三字经》自南宋以来,已有七百多年历史,是学习中华传统文化不可多得的'儿童启蒙读物,共一千多字,可谓家喻户晓。三字一句的韵文极易成诵,内容包括了中国传统的教育、历史、天文、地理、伦理和道德以及一些民间传说,广泛生动而又言简意赅。现

被联合国教科文组织列入《世界儿童道德教育丛书》。

《三字经》的内容分为六个部份,每一部份有一个中心。 从“人之初,性本善”到“人不学,不知义”,讲述的是教育和学习对儿童成长的重要性,后天教育及时,方法正确,可以使儿童成为有用之材; 从“为人学,方少时”至“首孝悌,次见闻”强调儿童要懂礼仪、要孝敬父母、尊敬兄长,并举了黄香和孔融的例子; 从“知某数,识某文”到“此十义,人所同”介绍的是生活中的一些名物常识,有数字、三才、三光、三纲、四时、四方、五行、五常、六谷、六畜、七情、八音、九族、十义,方方面面,一应俱全,而且简单明了。

《三字经》内容的排列顺序极有章法,体现了作者的教育思想。作者认为教育儿童要重在礼仪孝悌,端正孩子们的思想,知识的传授则在其次,即“首孝悌,次见闻”。训导儿童要先从小学入手,即先识字,然后读经、子两类的典籍。经部子部书读过后,再学习史书,书中说:“经子通,读诸史”。

二、小结:同学们,听了老师的介绍,你知道了什么呢?能给大家说说吗?

三字经课件【篇2】

教学目标:

1、理解并背诵《三字经》从“人之初,性本善”到“人不学,不知义”。[]以文章内在含义指导自己的行为,为学生创设传统文化的氛围,激发学生学习传统文化知识的兴趣。

2、明白教育和学习对儿童成长的重要性,后天教育及时,方法正确,可以使儿童成为有用之材;强调儿童要懂礼仪要孝敬父母、尊敬兄长。 教学流程:

一、谈话导入

教师:《三字经》是传统中国社会众多的儿童启蒙读物中最著名、最典型的一种。宋朝之后的读书人基本上由此启蒙。

《三字经》让我们懂许多礼仪之道,今天老师就带大家学习《三字经》中第一部分从“人之初,性本善”到“人不学,不知义”。看看你平时做的哪些事和《三字经》中的一样?

二、多种方式诵读

(一)、静心自读;

(二)、指名接读;

(三)、齐读;

三、理解含义

1、今天我们学的这段里你知道哪一句的含义,给老师和同学们讲一讲,指名讲含义。

2、今天我们学的这段里你不知道哪一句的含义,提出来讨论。

三字经课件【篇3】

三字经是中国古代经典教材之一,被广泛用于儿童教育中。解读三字经教案的相关主题范文如下:

题目:通过解读三字经,实现儿童道德教育的有效途径

一、引言

三字经作为中国传统经典之一,具有浓厚的道德教育内涵。如何利用这一经典材料,有效实施儿童道德教育,一直是教育者关注的问题。本篇主题范文将从三个方面分析解读三字经教案在儿童道德教育中的重要性和有效性。

二、主体

1. 儿童道德的重要性

儿童时期是道德建设的关键时期,良好的道德品质能够对孩子未来的发展和生活产生重要的影响。儿童道德教育旨在培养孩子的良好品德、行为规范和价值观念,帮助他们成为有责任感、懂公德心、有担当的人。

2. 三字经课堂的设计与执行

解读三字经教案是一种有效的儿童道德教育途径。教师可以通过以下方式设计和执行三字经课堂:

- 创设情境:通过故事、图片、视频等形式,创设情境,引起孩子的兴趣和共鸣,加深对三字经内容的理解。

- 互动讨论:鼓励孩子提出问题和疑惑,进行课堂互动讨论,帮助他们探索真理、理解道德道理。

- 引导思考:通过提问和反思引导孩子思考,培养他们的批判性思维和判断能力,帮助他们理解道德是如何在现实生活中运用的。

3. 教案中的教学内容

解读三字经教案应注重培养孩子的思辨能力和实践能力。通过三字经中的道德故事和规范,教育孩子正确的价值观和道德观,激发他们的责任感和公德心,培养良好的品德和行为习惯。

4. 教案的评估与改进

在课程实施过程中,应对解读三字经教案进行评估与改进。教师可以通过观察孩子日常行为和表现,进行定期评估并记录孩子的发展变化。同时,教师还可以与家长和同事进行交流和合作,共同改善教案的执行效果,提高儿童道德教育的质量。

三、结论

解读三字经教案是实施儿童道德教育的有效途径。通过三字经的解读和讨论,可以潜移默化地引导孩子领悟道德原则和规范,培养他们的道德情操和品德修养。然而,教师在实施教案时应重视创设情境、引导思考以及评估改进的策略,以确保教学效果的最大化和持续性。只有通过儿童道德教育的有效途径,我们才能培养出有担当、有责任心的下一代,为社会的进步和发展做出贡献。

三字经课件【篇4】

一、教学内容

苏老泉,二十七,始发愤,读书籍。彼既老,犹悔迟,尔小生,宜早思。

二、教学目标

1. 引领学生诵读“苏老泉,二十七,始发愤,读书籍。彼既老,犹悔迟,尔小生,宜早思”,理解基本意思。

2. 通过诵读,增强学生的学习意识,培养学生从小珍惜时间、热爱学习的良好习惯。

3. 感受中华文化的魅力,体会古文凝练、深厚的语言美和抑扬顿挫的音律美。

三、教学重难点

1. 引导学生主动探索“苏老泉,二十七,始发愤,读书籍。彼既老,犹悔迟,尔小生,宜早思”的意思。

2. 通过诵读,引导学生懂得从小珍惜时间、刻苦学习的重要性。

四、课时安排

1 课时

五、教学过程

1. 复习导入

(1)《三字经》在中华大地上流传了千年之久,几乎家喻户晓。书中的文化博大精深,是古时孩子的蒙学教材。近年来,联合国教科文组织把《三字经》等列入“世界儿童道德教育丛书”,可见其影响之深远……今天我们来继续学习《三字经》。

(2)前面我们已经背了《三字经》中的很多内容,现在我们来比比谁记得多、记得牢、记得巧。(不仅要背,还要说说怎么记的。)

[建议]

古文距离学生是遥远的,但是,游戏能激起学生的兴趣,引起学生探索的欲望,使学生情不自禁地进入学习的过程之中。

2. 理解句意

(1)今天我们继续学习《三字经》里的一段:“苏老泉,二十七,始发愤,读书籍。彼既老,犹悔迟,尔小生,宜早思。”自己读,读正确,并思考句子的意思。

(2)指名读,正音。

(3)小组交流字词的意思,以及对句子的理解。

(4)教师组织交流,重点点拨。

[建议]

新课标强调学生积极自主探究合作的学习方式,因此,此处句子的教学,采用引导学生自己阅读、思考、质疑,然后小组合作、讨论,最后一起交流的学习过程。既调动了学生的自主性,又使学生互助合作,教师适时的点拨又恰到好处地解答了学生的疑惑。

3. 拓展阅读

(1)朗读相关典故,帮助深入理解句子的含义。

《大器晚成的苏洵》和《韩愈苦读》(见《三字经》第108-109页)

(2)你还知道哪些“大器晚成”的故事?请给大家讲一讲。

(齐白石、越王勾践、刘邦、吴承恩)

(3) 读读下列与本文相关的古诗词,说说你的感受。

长 歌 行

汉乐府

青青园中葵,朝露待日晞。

阳春布德泽,万物生光辉。

常恐秋节至,焜黄华叶衰。

百川东到海,何时复西归?

少壮不努力,老大徒伤悲。

劝学

[唐]颜真卿

三更灯火五更鸡, 正是男儿读书时。

黑发不知勤学早, 白首方悔读书迟。

劝学

[唐]孟郊

击石乃有火, 不击元无烟。

人学始知道, 不学非自然。

万事须已运, 他得非我贤。

青春须早为, 岂能长少年。

题弟侄书堂

[唐]杜荀鹤

何事居穷道不穷,乱时还与静时同。

家山虽在干戈地,弟侄常修礼乐风。

窗竹影摇书案上,野泉声入砚池中。

少年辛苦终身事,莫向光阴惰寸功。

寒夜读书

[宋]陆游

韦编屡绝铁砚穿,口诵手钞那计年。

不是爱书即欲死,任从人笑作书癫。

观书有感

[宋]朱熹

半亩方塘一鉴开,天光云影共徘徊。

问渠那得清如许?为有源头活水来。

(4)摘抄诗中表示珍惜时间、勤奋学习的诗句,并有感情地诵读。

(5)只要我们能坚持珍惜时间,刻苦勤学,就一定能成才。让我们牢记这几句话,背诵今天所学的《三字经》。

[建议]

新课标非常重视小学生古诗词的积累和文化的熏陶。这一部分的教学希望通过学生对相关内容的阅读、背诵、感悟等多种形式,帮助学生了解、学习、积累、深化对本次所学《三字经》中相关内容的理解,同时领略祖国传统文化的丰厚,进而激发他们对祖国语言文字的喜爱之情。

4. 自由创编

(1)《三字经》是我国流传很广、家喻户晓的启蒙读物,是我国古代历史文明送给每个中国人的遗产。它三个字为一句,每一句所表达的意思都不相同。虽然每句只有三个字,但简洁明了,含义深刻,又能让我们一读就懂。

现在,我们是新时代的孩子,我们也来模仿,学着编几句流畅的《三字经》。

(2)交流,比比谁编得更好,先在小组内交流,选出最佳作品。

(3)每组的代表朗读,评出班级“小作家”。

(4)自由选读同学的优秀作品。

[建议]

新课标指出,语文教学应致力于学生语文素养的形成与发展,着眼于学生语言能力的形成,并力求培养学生的创新精神和创造能力。所以,“创编”环节的设计目的就是让学生在诵读、积累的基础上有所创新。

5. 总结延伸

(1)读读今天学的《三字经》,然后进行背诵比赛。

(2)课后,自由组合成小组,为自己创编的“新三字经”编歌、编曲,并歌唱。

[建议]

为语文学习增添乐趣,并培养学生的综合能力,同时又识记了学习内容,可谓一举多得。

三字经课件【篇5】

教学过程:

一、初读感知。

师:今天,我们继续学习《三字经》!(出示句子)先听一段录音!(播放录音)

师:瞧,他读得多好呀!有小朋友已经跃跃欲试了,谁先来读读看?

师:谁敢来跟他比试比试?注意读准字音!

师:这里有几个生字,我们来认识它们,跟着老师读;

龄 能 融 让 梨 弟 (领读)

师:还有谁比他们读得还好?请举手!

师:这么多的小朋友愿意读呀!这样,咱们男女生交叉读,女生读红颜色标注的部分,男生读蓝颜色标注的部分。女生先读,香九龄——(引读)

师:我们一起把这段话快速地读出来!香九龄——(引读)

师:放慢速度,再来读读看!香九龄——(引读)

二、讲解故事。

其实,这段话蕴藏着两个小故事呢!先来看第一个故事吧!

配乐,结合动画叙述黄香温席的故事。

1、师:古时候,有一位叫黄香的小朋友。九岁时,母亲去世了,他与体弱的父亲相依为命。他知道父亲养育自己的艰辛,非常心疼父亲。夏天天热,每晚他都先把父亲的枕席扇凉,以便让父亲安睡。冬天天冷,每晚他都先上床,用体温把被褥捂热,以免父亲着凉。正因为黄香有此孝心,才使他长大后在做人、求学上都取得了很大的成就。

师:多懂事的孩子呀,咱们也要向他学习!《三字经》里是怎样写他的?打开书到第4页,找找看!

相机出示句子:“香九龄,能温席。孝于亲,所当执。”

师:谁再来试试?

师:女生学着她的样子一起读!香九龄——(引读)

2、师:第二个故事讲的是谁呢?先来认识一下主人公吧!(出示孔融的图片)他叫孔融!大家都听过孔融让梨的故事吧?谁来说说?

师:听了刚才的故事,一定有聪明的小朋友能在课文中找出相关语句来,谁来说?

师:对呀,孔融让梨的故事这么长,可古人只用了十二个字就概括了,真神奇呀!(出示句子:融四岁,能让梨。弟于长,宜先知。)

一起来读!

师:小孔融在很小的时候,就知道要把大梨让给哥哥们吃,他对兄弟是多么友爱!

过渡:在刚才的句子中,我们知道了一个人必须要懂得做人做事的道理。首先要孝顺父母、恭敬兄长,其次才是学习各种常识。这就是《三字经》中所说的——(出示句子:首孝弟,次见闻。知某数,识某文。)

三、指导背诵。

过渡:这么好的句子,老师相信小朋友们一定已经熟记在心了。现在,老师就要考考你们了,会的小朋友一起回答!先准备准备,自己读读!

师:现在来看大屏幕!

(1) 你能把它们补充完整吗?

香九龄,_________。孝于亲,_________。

融四岁,_________。弟于长,_________。

首孝弟,_________。知某数,_________。

(评:字字正确!)

(2) 这样,你还会填吗?

香九龄,_________。孝于亲,_________。

融四岁,_________。弟于长,_________。

首孝弟,_________。知某数,_________。

(评:很有感情!)

(3)(出示黄香的图片)《三字经》中是怎样写他的?

一起背!香九龄——(引读)

(出示孔融的图片)你能背出和这幅图有关的句子吗?

一起背!融四岁——(引读)

首孝弟,___________。_____________,______________。

(4)师:小朋友们在这么短的时间内就能把这几句背下来,真用心!我们一起来背!拍着小手,摇着脑袋。香九龄——(引读)

四、课外延伸。

学了刚才的句子,我们认识了两位可爱的小朋友黄香和孔融。他们都是孝顺父母、团结兄弟姐妹的好孩子。你们身边也一定有许多这样的小黄香、小孔融。利用下课时间,去收集他们的故事,下节课在班上讲给同学们听听!

高三课件(系列15篇)


发现“高三课件”这个领域,让我们开启了一扇通往全新世界的大门。接下来,请继续阅读更多内容,希望您能够将这些知识应用到学习和工作中。教师们在工作中包括制作教学大纲和课件等内容,因此需要认真仔细地准备。学生的反馈可以帮助老师更好地调整教学计划,以更好地适应学生的需求。

高三课件【篇1】

Unit 14 The Language of Honey Bees教学设计

本篇课文The language of honey bees 是新编英语教材第三册的第14单元,是一篇科技性说明文。讲述了一位科学家对蜜蜂交流食物信息途径的研究。涉及到蜜蜂如何通过舞蹈传递食物的远近和距离等内容。就本单元Zoology而言,reading部分是本单元的中心,一方面有warming- up 和 speaking 当中学到的有关动物的知识为其作铺垫,另一方面此课的学习又为下面的Primates 打下基础,使学生能在reading 中学到的关于动物的信息和探索的科学方法,以及阅读中获得的阅读技巧得到更好的应用和发挥。就本册教材而言前四个单元都是有关对自身极限和对自然界的探索,在第十单元又涉及到了成功的关键,这就为本课的学习奠定了情感基础。另一方面,这是第十三单元的课文,已接近本册书的结尾,所以在语言能力的各个方面学生也都有了一定的积累。因此,从内容上看,本节课是对前面所学单元主题的再现与升华。本课的学习可以进一步培养学生的探索能力,推理能力和空间的想象力。.

相对而言,理科班的学生英语要弱一些,而本篇文章的很多句子和段落的语言不够清晰明了,对他们来说是有一定的难度的。但由于本文涉及到了蜜蜂的舞蹈,是属于动物学的问题,从内容上看应该是理科班的学生更感兴趣的话题。

为了使学生更好地理解本篇文章,达到教学目的,就必须通过将抽象的语言用图片或动画表现出来以减小语言上给他们带来的压力,同时又要激发他们原有的对动物的兴趣。

1. Enable the students to know the communicating ways of bees.

2. Enable the students to understand how Professor Karl Von Frisch’s experiment is done.

Skill objectives:

1. Improve students’ reading ability, especially in exploring the implied information.

2. Improve students’ thinking ability, especially deducing.

Moral objective: to promote the spirit of scientific thin king and cooperation and loving animals.

四.Key points : to improve students’ reading ability and skills

Difficult points: the ways bees use to communicate information of food

Multi-media method, acting ect.

Computer, recorder.

1、Show a group of pictures of animals on the screen. Ask the students to speak out the names of the animals.

2、Ask the students to say as many proverbs or sayings containing the name of an animal as possible.

When the is away, the will play.

Step 1: fast reading and do T or F

All bees do not live in trees.

Honey-bees interested scientists most.

Bees communicate the news of food to other bees outside their hive.

There are three dances mentioned in the text.

The number of wagging dances per minutes told the direction to the feeding place.

Task 1: reading the text and match the main idea with the right paragraph.

Task 2: find out the ways bees used to communicate information of food

Para2-3 1.What the scientist assume first?

2. What did they do for their assumption? Was it proved?

3.What kind of a dance was found?( flash)

4. What was the conclusion?

Para 4-5 5. What was the other dance?(flash)

6.What information did it convey?

7.What’s the difference between the two dances ?

A circle dance Food is near.

A wagging dance Food is far away.

Para 6 8.What do you think the remaining question is

2. Doing some reading comprehension

Karl Von Frisch got a noble Prize together with his partner.

Now suppose we are at a rewarding ceremony, one of you is Karl Von Frisch,

the others are reporters from different TV stations.

Find out the way to communicate direction.

高三课件【篇2】

1. 话题:Talking about the mystery.

2. 词汇:reception, considerate, cigar, splendid, astonish, coincidence, tension, elegant, bachelor, prescription, drawer, theft, religious, stubborn, enquiry, assistance, vital. guilty, stain, banquet, convince, assume, cancel, meanwhile, remark, innocent, commit, straightforward, roundabout

Maybe you could… You ought to…

If I were you I'D. .. Why don't you…?

It might be a good idea if you… Have you thought about…?

I suggest you… You must…

4. 词组:

2) in an act of revenge =in order to revenge

3) pass on… to sb. =hand sth. down to sb.

5) fasten… to…

7) be stubborn in doing…=insist on doing s

9) turn out (to be) guilty / that…

11) be desperate for sth/ to do sth…

= in great need of sth/ to do sth

12) have no choice but to do…

do nothing but do…

can't help but do…

can not choose but…

16. be considerate of/ to/toward …对…体贴 17. be astonished at / to do…

18. be guilty about/ over/for/of…

19. be cursed with …

20. be convinced of/ that…坚信……

21. be mistaken about sth/sb. 弄错

22. prove sth. to sb. 证实……

prove to sb. that…

take the trouble to do sth…

24. pay a high price for…

be engaged in politics/ business

26. as for…=with regard to sb. /sth

1) When he died he left the Moonstone to his sister's daughter, in an act of revenge, passing on his bad fortune to her.

2) His move to quit smoking cigars to please her is seen by the servants as evidence that he is in love with Rachel.

3) Is it coincidence or is it the moonstone's bad luck that causes the tension and strange things that happen during the rest of the evening?

4) Franklin's reply that doctors just guess which drug they should recommend, makes Dr Candy extremely angry.

5) The detective believes that she may have taken the diamond either from force of habit or to cause a disagreement between Rachel and Franklin.

6) Rachel is stubborn in resisting his enquiries about the Moonstone to the degree that she makes it seem as if she does not want the mystery to be solved.

7) I was convinced that she had taken her own diamond, and that Rosanna had assisted her.

set : 1) 放,安放(to put) He set his hand on my should.他把手放在我的肩上。

2) 布置,安排 (to put into order for use) Please set the table for dinner

3)制定,确定(to fix or determine a rule, time, etc)

Have you set the time for the meeting?

4) (太阳等)下落(to go down)The sun rises in the east and sets in the west.

5) 镶嵌于(to fix…into)He set a diamond in a ring.

6)设置(书本,戏剧,电影等)的背景 The novel is set in the gold rush

act v. Think before acting . 三思而后行

The medicine was taken for a long time, but it failed to act. .这药服了很长时间了,但还未见效。

(1) 当action 作可数名词时,常与act 同义。a kind act/ action 仁慈的行为

(2) 但act 多指具体的,短时的的行为或行动;action多指复杂的,持续的行为或行动。

(3) 在某些固定词组中,如an act of cruelty (残忍的行为),an act or war (战争行为),an act of mercy(仁慈的行为)等中,不能用action. 又如:take action (采取措施) 也是固定搭配。

He was interested in his book to such a degree that he thought about nothing else.他对工作是如此感兴趣,以至于从不想别的事情

To a certain degree he likes his job. 在某种程度上他喜欢他的工作。

Chinese fans love Yao Ming to the degree that they will try to watch any match that Yao Ming competes in.

(1) 像……一样He doesn't like skating as much as he used to.他不像以前那么喜欢滑冰了。

(2) 照……方式I have told the story just as it happened.我已如实讲了这件事。

(3) 因为,既然 As you object, I’ll reconsider the plan. 既然你反对,我就重新考虑一下这个计划。

(4) 虽然 Much as I like the book, I can't afford to buy it.

(1) whoever 既可引导名词性从句,又可引导让步状语从句。

Give the book to whoever (=anyone who) would like to read it.(whoever在从句中作主语)

Give the book to whomever (=anyone whom) you like. (whomever 在从句中作宾语)

Whoever comes to the meeting will be welcome. =Anyone who comes to the meeting will be welcome.

Whoever comes to the meeting, he will be welcome. =No matter who comes to the meeting, he will be welcome.

(2). no matter who 只能引导状语从句。No matter who you are, you can't go without permission.

considerate adj.体贴的 (of, to, toward )+ n.

Franklin is very considerate toward Rachel.

in ~ of 考虑到…,顾及…

on no ~ 决不…

3) consider sb./sth. as sth. 视某人(物)为He is considered a weak leader.

investigate vt. 调查,侦查investigation n. 调查,探究investigative adj. 调查的,

Her absence of hair could hardly escape remark.

她的脱发无法回避他人的议论。

1)当remark 做及物动词表示“注意、说到”时,常接宾语从句或名词;表示“评论”时,常用于 remark on(upon) sb. / sth.

It was rude to remark to his/her appearance. 对别人品头论足是不礼貌的。

2)remarkable adj. 引人注目的,突出的, 不平常的

She is a woman of remarkable imagination.

He was caught in the act of pickpocket(扒窃).

astonish (1) vt. 使惊讶,使惊愕常用于被动语态,不用于进行时

The news astonished everybody. 这消息令大家惊讶。

(2) vi. 被…惊讶I was astonished at/to hear the loud sound.

adj. 惊讶的 astonished adj. 令人惊讶的 astonishing n. 惊奇,惊愕 astonishment

to one’s astonishment 令人感到惊讶的是…

To my astonishment, the dog jumped at me suddenly.

(3)自觉有罪的,自知有过错的,内疚的(about/over/for/of + n.)

He was found guilty. 他被判有罪。

I was guilty of a slip of memory. 我记错了。

I feel guilty about having told a lie. 我说了谎话而感到内疚。

may 表示推测,“或许,可能”常用于肯定句中,may+动词原形表示对现在的情况进行推测。 It may rain tomorrow.

may not + v. 表示“可能不” can not + v. 表示“不可能”

may/must+can’t+have+done 表示对过去发生的事情的推测

He may have gone home. 他可能已经回家了。

(2) adj. 无邪的,天真烂漫的as innocent as baby 像婴儿般天真

(3) n. innocence 无辜 His friends proved his innocence.

.desperate (1)adj. (for+n.) 对…渴望 ,(to do)要做…(不置于名词前)

adj.不顾一切的,亡命的He was desperate for fame. 他极度渴望成名。

but是个介词,作“除了”解, 后面跟动词的不定式。

We had no choice but to wait.

comfort vt.安慰(某人)comfort a dying man安慰垂死的人

The child ran to his mother to be comforted.那个孩子跑到母亲身边以求得到安慰。

comfortable adj. 适合的,令人安逸的,舒适的a comfortable bed 舒适的床

The patient was comfortable after his operation.病人手术后非常安逸。

The witchdoctor cursed him,his son and his grandson.巫师诅咒他、他儿子和他孙子。

She cursed him for ruining her life.她诅咒他破坏了她的生活。

She was cursed with stammer all her life.她一生受口吃之苦。

He is a stubborn boy who won’t obey his mother.他是一个固执的孩子,他不会听母亲的话的。

Tom is stubborn in accepting new things.汤姆不容易接受新鲜事物。

The lock is rather stubborn; it needs oiling.这把锁相当难开它需要加油了。

She wasn’t really crying;she was only pretending.她不是真哭,只是在假装。

She pretended to be reading when her mother came in.当母亲进来的时候,她假装正在读书。

高三课件【篇3】

Unit 13 The mystery of the moonstone

话题:Talking about the mystery.

词汇:reception, considerate, cigar, splendid, astonish, coincidence, tension, elegant, bachelor, prescription, drawer, theft, religious, stubborn, enquiry, assistance, vital. guilty, stain, banquet, convince, assume, cancel, meanwhile, remark, innocent, commit, straightforward, roundabout

Maybe you could… You ought to…

If I were you I'D. .. Why don't you…?

It might be a good idea if you… Have you thought about…?

I suggest you… You must…

in an act of revenge =in order to revenge

pass on… to sb. =hand sth. down to sb.

fasten… to…

be stubborn in doing…=insist on doing s

turn out (to be) guilty / that…

be desperate for sth/ to do sth…

= in great need of sth/ to do sth

have no choice but to do…

do nothing but do…

can't help but do…

can not choose but…

16. be considerate of/ to/toward …对…体贴 17. be astonished at / to do…

18. be guilty about/ over/for/of…

19. be cursed with …

20. be convinced of/ that…坚信……

21. be mistaken about sth/sb. 弄错

22. prove sth. to sb. 证实……

prove to sb. that…

take the trouble to do sth…

pay a high price for…

be engaged in politics/ business

26. as for…=with regard to sb. /sth

When he died he left the Moonstone to his sister's daughter, in an act of revenge, passing on his bad fortune to her.

His move to quit smoking cigars to please her is seen by the servants as evidence that he is in love with Rachel.

Is it coincidence or is it the moonstone's bad luck that causes the tension and strange things that happen during the rest of the evening?

Franklin's reply that doctors just guess which drug they should recommend, makes Dr Candy extremely angry.

The detective believes that she may have taken the diamond either from force of habit or to cause a disagreement between Rachel and Franklin.

Rachel is stubborn in resisting his enquiries about the Moonstone to the degree that she makes it seem as if she doe not want the mystery to be solved.

I was convinced that she had taken her own diamond, and that Rosanna had assisted her.

Step 1 Pre-reading:

1.What do you already know about the story The Moonstone?

2.How many main characters in the novel? Who are they?

Characters :

Rachel Verinder : a beautiful and wealthy young woman, who lives with her mother and several servants in a fine house in England.

Godfrey: a successful bachelor with many lady admirers, who asks Rachel to marry him .

Franklin Blake: Rachel’s childhood friend.

Dr. Candy: a local doctor who has a quarrel with Franklin about a prescription.

The Indians They follow the Moonstone around the world wait for an opportunity to take it back .

Rosanna: Rachel’s maid who seems fond of Franklin.

Make the students try summing up the main ideas of some paragraphs, then show them some suggested ones.

Para 1 : sth about the moonstone

Para 2: some information about Rachel

Para 3 : the tension and strange things caused by the moonstone

Para 4 : sth happened at Rachel’s birthday party

Para 5 : the miss of the moonstone and Sergeant Cuff’s discovering

Analyse the structure of the passage:

Part 1 ---- Paragraph 1 : How Rachel gets the Moonstone as her present.

Part 2 ---- Paragraph 2: Rachel’s happy life before her eighteenth birthday party.

Part 3 ---- Para 3-4: What happens at the party.

Part 4 ---- Para 5: the Moonstone is missing and Sergeant Cuff is asked to investigate the case.

Part 5 ---- Para 6-9: how Sergeant Cuff analyse the case

Part 6 ---- Para.10 the last paragraph: Sergeant Cuff finds a vital clue of the theft ---- a smear in the wet paint on the door.

1.Who gave Rachel the Moonstone ?Why did he give it to her ?Where did her uncle get the Moonstone ?

Rachel’s uncle gave her the Moonstone .He wanted to pass on his bad fortune to her in an act of revenge .He stole the diamond from the temple in India.

2.What happened to the diamond after the birthday party ?

It was gone .

Sergeant Cuff thought many people might have stolen the diamond .Who do you think stole the diamond ?

1.Why did the man who stole the Moonstone give it to his sister’s daughter ?

A. Because he wanted to help her

B. Because he had no other relatives

C. Because he wanted to pass on his bad fortune to her

2. Why did Franklin quit smoking ?

A. Because smoking damaged his health

C. Because he wanted to please Rachel

3. Why did Godfrey ask Rachel to marry him ?

A. Because he wanted to get the Moonstone because of his heavy debt

C. Because he didn’t wish Rachel to marry Franklin

D. Because he wanted to destroy her family

4. The word “ vital ” is closest in meaning to ______ .

A. deadly B. important C. curious D. clear

5. Why didn’t Rachel answer the detective’s question ?

A. Because she loved him and she wanted to protect him

B. Because she didn’t see him move the Moonstone

C. She was afraid of being killed by Franklin

6. Who moved the Moonstone at night ?

A. Dr. Candy B. Franklin C. Godfrey D. Rachel’s mother

7. You can find out the topic of the text simply from ______ .

A. the title B. the first paragraph

C. the second paragraph D. the last paragraph

8. When did the real story of the Moonstone take place ?

A. In the 1890s B. In the 1790s C. In the 1840s D. In the 1800s

9. In your opinion , who might kill Godfrey ?

A. Franklin B. Dr. Candy C. Rachel D. The Indians

10. How many people saw Franklin move the Moonstone to his bedroom ?

Step 4 Post-reading:

1. Rachel’s birthday party was not a success. Why not?

Several arguments and strange things happened: Godfrey proposed marriage to Rachel and was turned down, Franklin argued with Mr. Candy, and Indian entertainers arrived but gave poor entertainment. The passage also suggests a reason why the party was not successful might be the bad luck of the Moonstone.

Why did Sergeant Cuff think Franklin might have stolen the diamond?

He is enthusiastic to help the investigation even though this makes Rechel very angry. Is he covering up hid guilt?

A list about the suspects and reasons :

They followed the Moonstone around the world waiting for an opportunity to take it back to India .

He might have stolen the Moonstone as revenge for loss of face ,because Rachel turned down his proposal of marriage .

As with Godfrey, he lost face because of the quarrelling with Franklin.

Perhaps she had debts that needed to be paid .

She might have taken the diamond either from force of habit ,for she was a thief before Rachel’s mother gave her a job or cause a disagreement between Rachel and Franklin

He gave the detective assistance.His enthusiasm was the reason why he was suspected ,because it was not his business.

Step 5 What are the main clue of the story?

The detective story develops completely following the structure: the appearance of the Moonstone (receiving from Rachel’s uncle) ---- the loss of the Moonstone ---- the investigation of the Moonstone (and the person who might have stolen it )---- discovery of the truths or facts.

Integrating Skills Solving the mystery of the moonstone

In reading part, sergeant cuff had several suspects and it was difficult for him to make certain who was the theft. For the sake of the clue mentioned by cuff, can you guess the real theft?

Scan the passage and make out how the story develops:

Part 1---- Paras 1-2: how puzzled Sergeant Cuff was at the case before he knew the truth.

Part 2---- Paras3-7: the things that happened after the diamond had been stolen.

Part 3----Paras 8-9: the result of the case: Sergeant Cuff discovered the thief.

Part 4----: the feeling and thoughts Sergeant Cuff has about the case.

Step 2 Read the passage and finish the exercise

Get the students to read the passage and ask some questions:

1.Who was it that wrote the passage? _______

A Rachel B Rosanna C Franklin D the sergeant

2. Why did Rachel cancel the wedding after her accepting Godfrey? Because _____

A Rachel never loved him that much.

B Rachel sensed Godfrey loved her great wealth extremely. C The Indians attacked Godfrey.

3. According to the text, who made the sergeant not suspect Franklin any more?______

A Rachel and Rosanna B Dr. Candy C Franklin himself and Dr. Candy

4. We are told who the real theft was.__________

A Rachel and Franklin B the Indians C Godfrey D. Sergeant Cuff

5.Which one is correct in the following?

A Godfrey bought the moonstone at a high price.

B Sergeant Cuff didn’t know the reason for Godfrey’s death so he wasn’t a professional detective.

C The moonstone was gone without any cause at last.

D The passage is about how the sergeant finished the case of the moonstone.

Language points : 1. The novel the Moonstone is set in England in 1848, but the story really began 50 years later. Set: 设置(书本,戏剧,电影等)背景。如: The book is set in France in the eighteenth century. 这部书是以18世纪的法国为背景的。 This novel is set in the gold rush. 这部小说是以淘金热为背景的。 Set 其他意思: He set his hand on my shoulder. 他把手放在我的手上。 Please set the table for dinner. 请摆好餐桌准备就餐。 Have you set the time for the meeting?你们把开会时间定下来了吗?

The sun rises in the east and sets in the west. 太阳从东方升起在西方落下。 He set a diamond in a ring. 他把一块宝石镶嵌在戒指上。 2. curse n. 诅咒, 咒语, 祸根, 祸因 vt. 诅咒, 咒骂, 降祸, 使受罪 Our tribe is under a curse. 我们的部族正遭天谴。 Foxes can be a curse to farmers. 狐狸可给农民带来祸害。 It is essential for us to try to decide whether television is a blessing or a curse. 我们有必要来评断电视到底是福还是祸。 Selfishness is the greatest curse of the human race. {William Ewart Gladstone} 自私是人类最大的祸根(威廉尤尔特格拉德斯通)

V. She cursed him for ruining her life.她诅咒他破坏了她的生活。

She was cursed with stammer all her life.她一生受口吃之苦。

3. as the story develops … As 意思是“随着”。 如: As time went by, he began to realize that he should have studied hard.

随着时间的推移, 她开始意识到他本该好好学习的。

As 其他用法(作为连词) a.像……一样He doesn't like skating as much as he used to.他不像以前那么. 喜欢滑冰了。

b.照……方式I have told the story just as it happened.我已如实讲了这件事。C.因为,既然 As you object, I’ll reconsider the plan. 既然你反对,我就重新考虑一下这个计划。

d.虽然 Much as I like the book, I can't afford to buy it.4. to …degree达到。。。的程度 He was interested in his work to such a degree that he thought about nothing else. 他对工作如此感兴趣,以致于他从来不想别的事情。 To a certain degree he likes his job. 在某种程度上他喜欢他的工作。

Chinese fans love Yao Ming to the degree that they will try to watch any match that Yao Ming competes in.

To what degree are you fond of botany?5. guilty 惭愧(about),有过失的,有罪责的(of) I felt guilty about not visiting my parents more often. 我因没有常去看望父母而感到内疚。 John had a guilty look on his face. John 脸上显出惭愧的表情。 The jury found the defendant not guilty of the offence. 陪审团裁决被告无罪。 We’ve all been guilty of selfishness at some time in our lives.

我们每个人都有过自私自利的过失。 6. resist 抵制,阻挡 The bank strongly resisted cutting interest rates. 银行强烈反对降低利率。 (用于否定句) 忍住,抵挡 He couldn’t resist showing off his new car. 他忍不住炫耀起了他的新车。

7. .considerate adj. 考虑周到的, 体谅的,体贴的 consider v. consideration n.

considering prep.& conj. 考虑到,就…而言

be considerate toward/of /to sb.

It is /was considerate of sb to do

①He is always polite and considerate towards his employees.

②It was considerate of you not to play the piano while I was having a sleep.

③He bought his car at a considerable expense

④She is very active , considering her age.

⑤When marking Dan’s exam papers, the teacher took his long illness into consideration.

⑥The award is considered a great honor.

8. convince v. 使信服,使坚信,使确信;说服 convinced adj. convincing adj.

convince sb/oneself of sth.

sb.that clause…

convince sb. to do = persuade sb to do

①他使我相信他是无辜的.

He convinced me of his innocence.

②什么说服你为他们投票?

What convinced you to vote for them?

9.assume v.假定,假设,认为; 承担(责任),就职;呈现;假装

assume responsibility/office/a smile/an air of concern

①普遍认为,紧张是工作过中所致.

It is generally assumed that stress is caused by too much work.

②在未听到对他不利的证据之前,我们假定他是无罪的.

We assume him to be innocent before hearing the evidence against it.

10. meanwhile adv./n. 同时, 其间,(两方面)对比之下 The doctor will see you again next week. Meanwhile, you must rest as much as possible. Stress can be extremely damaging to your health. Exercise, meanwhile, can reduce its effects.

压力对你的健康非常有害,而锻炼会减少这种害处。 in the meanwhile 在此其间,与此同时 I hope to go to medical school eventually. In the meanwhile, I am going to study chemistry. 我希望最终能上医学院,这其间我打算学化学。 11. desperate 冒险的,绝望的, The prisoners grew increasingly desperate. 非常需要,渴望 ~ (for sth)| ~ (to do sth) He was so desperate for a job he would have done anything. I was absolutely desperate to see her. 12。 While 用法 while 表示让步,通常位于句首,意思是“尽管;虽然”。又如: While I agree with your reasons, I can’t allow it. 尽管我同意你的理由,但我不允许你这样做。 While he loves his stuents, he is very strict with them. 虽然他爱他的学生,可是他对学生们很严格。 While 其他用法归纳如下: 1)引导时间状语从句,意思是“当。。。的时候,和。。。同时”。从句中谓语通常是延续性动词。 如:Mary watched TV while she ate her supper. 玛丽边吃饭边看电视。 While she was listening to the radio, she fell asleep. 她听着收音机睡着了。 2)表示对比或转折,意思是“而,然而”。此时,while 一般谓语句中。 如: Some people waste food while others haven’t enough. 有人浪费粮食,而有人却吃不饱。 高考相关: I do every single bit of housework ____ my husband Bob just does the dishes now and then. A since B while C when D as

(2) adj. 无邪的,天真烂漫的as innocent as baby 像婴儿般天真

(3) n. innocence 无辜 His friends proved his innocence.

He is a stubborn boy who won’t obey his mother.他是一个固执的孩子,他不会听母亲的话的。

Tom is stubborn in accepting new things.汤姆不容易接受新鲜事物。

The lock is rather stubborn; it needs oiling.这把锁相当难开它需要加油了。

He was caught in the act of pickpocket(扒窃). 16. astonish (1) vt. 使惊讶,使惊愕常用于被动语态,不用于进行时

The news astonished everybody. 这消息令大家惊讶。

(2) vi. 被…惊讶I was astonished at/to hear the loud sound.

adj. 惊讶的 astonished adj. 令人惊讶的 astonishing n. 惊奇,惊愕 astonishment

to one’s astonishment 令人感到惊讶的是…

To my astonishment, the dog jumped at me suddenly.

(A)Fill in the blank with proper words or phrases

1.The police made _____________ about the stolen car.

2.Don’t make rude _____________ about her appearance.

3. The medicines are not available without a ________________.(药方)

4.What a _______________! I wasn’t expecting to see you here.

5. She can be as _____________ as a mule.

6 He was set free , for he was found ______________of any crime.

7. We feel some ______________ before we take the exam.

8. When we went to visit her, she happened to be out. We wrote a note and _________it______ the door.

9. The novel ______________ France in the eighteenth century.

10. He was interested in his work ___________________ that he thought about nothing else.

11. Be good to me and don’t ______________________me. I had my hair cut off and sold it out of love for you.

12. Frightened by the two robbers with guns in their hands , the little girl ____________________ cry.

1. ____ it rains tomorrow, what shall we do?

A. Pretending B. Thinking C. Assuming D. Believing

2. He was put in prison. He______ a crime.

A. must commit B. must have committed C. should have committed D. might commit

3. He makes it ______ if this is one of the most delicious meals _____ he has ever enjoyed.

A. seems like, that B. seem as, that C. seemed as, which D. seem like, which

4. Give the book to _____ would like to read it.

A. no matter who B. anyone C .whoever D. whomever

5. It is _____ of you to turn down the radio while I was asleep.

A. considerate B. considerable C. considered D. considering

6. It was hard to _____ you that we could not afford a new car.

A. persuade B. suggest C. convince D. advise

7.The meeting is beginning at 8 o’clock. ________ let’s make some preparations for it.

A. At the same time B. While C. During D. Meanwhile

8.If you buy more than ten, they knock 20 pence off____.

A. a price B. price C. the price D. prices

9.The discovery of new evidence led to ____.

A. the thief having caught B. the thief being caught C. catch the thief D. the thief to be caught

10.---Where will they meet?

---They are ___ to meet in Beijing.

A. suggested B. hoped C. engaged D。insisted

11.Those who suffer depression are likely to ___ suicide.

12.___from this point of view, the question will be of great importance.

A. Considered B. Considering C. Consider D. To consider

13.I have been making some ___ about it.

A. inquiry B. inquiries C. inquire D. enquire

14. As a Chinese saying goes, it is never too late to ___ for a man.

A. revenge B. revenge others C. revenge oneself D. revenge for oneself

15.I _____ that we were doing the right thing.

A. was believed B. was convinced C. was no doubt D. persuaded

16. The Chinese film,____ Tang Dynasty, is well received by many foreign viewers.

A. is set in B. setting in C. set in D. be set in

17 .__ no one has thought of this before.

A. I astonish that B. I am astonishing C. It astonishes me that D. It is astonished that

18..I find it quite___ that none of you likes play.

A. astonished B. astonishment C. astonishing D. astonish

高三课件【篇4】

原子核结构

新课标要求

1、知识与技能

(1)知道原子核的组成,知道核子和同位素的概念。

2、过程与方法

(1)通过观察,思考,讨论,初步学会探究的方法;

(2)通过对知识的理解,培养自学和归纳能力。

3、情感、态度与价值观

(1)树立正确的,严谨的科学研究态度;

(2)树立辨证唯物主义的科学观和世界观。

教学重点:原子核的组成。

教学难点:如何利用磁场区分质子与中子

教学方法:教师启发、引导,学生讨论、交流。

教学用具:投影片,多媒体辅助教学设备

1、原子核的组成

问提:质子:由谁发现的?怎样发现的? 中子:发现的原因是什么?由谁发现的?(卢瑟福用 粒子轰击氮核,发现质子。查德威克发现中子。发现原因:如果原子核中只有质子,那么原子核的质量与电荷量之比应等于质子的质量与电荷量之比,但实际却是,绝大多数情况是前者的比值大些,卢瑟福猜想核内还有另一种粒子)

小结:

①质子(proton)带正电荷,电荷量与一个电子所带电荷量相等,

中子(nucleon)不带电,

②数据显示:质子和中子的质量十分接近,统称为核子,组成原子核。

提问:③原子核的电荷数是不是电荷量?④原子荷的质量数是不是质量?

提示:③不是,原子核所带的电荷量总是质子电荷的整数倍,那这个倍数就叫做原子核的电荷数。

④原子核的质量几乎等于单个核子质量的整数倍,那这个倍数叫做原子核的质量数。

小结:③原子核的电荷数=质子数=核外电子数=原子序数

④原子核的质量数=核子数=质子数+中子数

⑤ 符号 表示原子核,X:元素符号;A:核的质量数;Z:核电荷数

一种铀原子核的质量数是235,问:它的核子数,质子数和中子数分别是多少?(核子数是235,质子数是92,中子数是143)

2、同位素(isotope)

(1)定义:具有相同质子数而中子数不同的原子,在元素周期表中处于同一位置,因而互称同位素。

(2)性质:原子核的质子数决定了核外电子数目,也决定了电子在核外的分布情况,进而决定了这种元素的化学性质,因而同种元素的同位素具有相同的化学性质。

提问:列举一些元素的同位素?

提示:氢有三种同位素:氕(通常所说的氢),氘(也叫重氢),氚(也叫超重氢),符号分别是: 。

碳有两种同位素,符号分别是 。

高三课件【篇5】

Goals:

a. Achieve language skills and related knowledge about the topic of environment protection;

b. Learn to express causes and effects:

c. Vocabulary in this unit:

the words and expressions listed on the teacher’s book

d. Grammar:

Review Direct and Indirect Speech

Lesson 1

Main points

1.Words

in danger; fur; cut down; left;sometimes;discuss; make sure; find out

2.Sentence patterns

...,tigers can no longer hide and hunt.

ctional item

Questions and answers

Difficult points

No longer&no more

Teaching procedures

Step 1 Lead-in

Ss tell the reasons why some animals have died out.

T:We know there are far fewer kinds of animals in the world than before.They have died out for different reasons.

Ask several students to tell the reasons.Get Ss to know about the fact many animals have died because of human beings.

Step 2 Warming up

1.Ss talk about the three pictures.

What kinds of animals are they?

Why are they in danger?

Why do people hunt them?

2.Divide the class into groups and discuss the three questions.

3.Several groups report their answers.

Step 3 Listening

One of the reasons why animals are in danger is pollution.Next you will listen to a report about pollution to know how serious it is.

1.Go through each task and understand what to do.

2.Play the tape two times as necessary.Pause at important points and give the students help.

3.Let the Ss discuss their answers in pairs.

4.Check the answers.

5.Discuss Part Two in groups for a few minutes and then report the answers.

Step 4 speaking

1.Read the instructions.

2.Ss practise asking and answering in pairs.

3.Ask two pairs to act out.

Step 5 language points

1.no longer/no more

no longer =not ...any longer

no more=not...any more

It is later. I can't wait any more.

Time lost will not return any more.

2.make sure(that)

Ep: Make sure that you understand what your teacher says.

Ep: Arrive early at the cinema to make sure of(getting) a seat

Homework

Practise asking and answering questions.

Lesson 2

Main points

1.Words

die out, act, measure, original, respond, vaheatle , keep...from...,live a better life, that is, first of all, by doing, pick up.

2.Sentence patterns

...but we don’t always do as we say...

The good news is that there is a lot we can do to help.

Difficult points

the predicative clause

Teaching procedures

Step 1. Revision

Check the homework

Step 2. Pre-reading

1.Q:What do plants and animals need to survive?

A:Encourage the students to compare animals and humans.Animals and plants also have basic needs and animals live in social groups.

2.Q:What do animals do to survive in places where it is very hot or cold,where there isn't much water?

A:Animals adapt to change in their habitat and try to learn to survive when the conditions of their habitat change.

Step 3 Reading

T:From last period we know many animals are in danger.Then do you know why some plants are in danger and even human beings? Let's try to find the answer to the question above from the text and what we can do to stop it.

Ask students to read quickly in silence and find the answer to the following question.

Q:What can we do to protect the environment?

A:We should create more space for animals and plants.We should stop pollution.

Step 4 Post-reading

Ask students to read the text again and answer the following questions.

1.Why do animals and plants become endangered?

A:Animals and plants become endangered when their habitat is destroyed or when conditions in the habitat change too quickly or too drastically.The text lists three main reasons: habitat change,the arrival of new species in the habitat,and the overuse of the species itself or the resources in the habitat.

2.A species can become endangered when its habitat is changed or destroyed. Can you think of things human beings do that may destroy or cause change in a habitat?

A:Various answers are possible. Encourage the students to think of human behaviour that can cause problems:pollution, land use, hunting, farming, etc.

Step 5 Language points

1.as conj.

When in Rome do as the Romans do.

Do you have to feed plants as you feed chickens?

2.take action

I didn't take immediate action.

active adj.

He was active in the 1798 revolution.

3.measure v.&n.

(1)vt.&vi.

We measured the room and found it was 200 feet long and 15 feet wide.

Can you wait till I have finished measuring?

(2)n.

An inch is a measure of length.

Step 6 Listening to the tape

Homework

Review words and language points in the text.

Lesson 3

Main points

Words

devote...to...; at present; common; set...free; in the wilds; give a talk; what kind of; explain sth. to sb.; hope&wish; however; one day,some day&another day; stop doing&stop to do...

Difficult points

hope&wish

Teaching procedures

Step 1 Revision

1.check the homework

2.Ask several students to say something about the wildlife endangerment.

Step 2 Word study

Get students to know something about word formation and go over the use.

1.hope&wish

(1)hope

①for+n.

②to do...

③that...

(2)wish

①for+n.

②to do...

③sb./sth.+adj./done/to do...

④sb. sth.

⑤that...

2.stop doing&stop to do

He stopped smoking.(=He didn't smoke any more.)

He stopped to smok.(=He paused and began to smoke.)

Step 3 Grammar

1.Revise the rules for the Direct Speech and Indirect Speech.

2.Practice

(1)Read the news story on P68 in book.Pick out the sertences and then change them into Direct Speech.

(2)Do excercise on P141 in book. Grammar Ex 1.

Homework

1.Go over all words and expressions.

2.Preview: New words and phrases in next part.

Lesson 4

Main points

1.Words

energy; reduce; amount; harmful; material; organize; attractive; be careful with...; throw away; in fact; end up as waste; share; show sth. to sb.

2.Sentence patterns

It is important to do ...

Choose an environmental problem that you think is important.

Teaching porcedures

Step 1 Revision

1.Review the Direct Speech and Indirect Speech.

Change the sentences into Indirect Speech.

2.Make sentences with the following words and expressions.

hope&wish; stop doing&stop to do ; set...free

Step 2 Lead - in

Ss list some ways to protect the environment.

T:There are mays to protect the environment.List some of them.Next we will read a passage to find more ways of protecting environment.

Step 3 Presentation

1.Help the students understand what the passage tells us.

2.Divide the class into groups and discuss to find the answers.

3.Several groups report their answers.

Step 4 Language points

1.It is important to do...

(1)It is+adj./n.+to do sth.

It is wonderful to have a walk in the woods.

(2)It is+adj.+for sb. to do sth.

It was easy for me to answer the question.

(3)It is+adj.+of sb. to do sth.

It's kind of you to think so much of us.

sth. to sb.=show sb. sth.

He showed me a photo of him.

3.be careful with...

be careful with+n.

be careful in+v-ing.

Step 5 Listening

Homework

Revise all the words and expressions in this unit and revise the new words in next unit.

高三课件【篇6】

一、 说教学内容

本节课的授课内容是高三物理八模考试(陕西省20xx届第二次模拟考试)试卷I卷讲评。

二、 说学生现况

理综物理I卷共8个选择题,其中涉及力学部分考点的有4道题,涉及电磁部分考点的有4道题。从学生的答题情况看,力学部分得分率较高,最好的是15题追及和相遇问题,电磁部分得分率较低,最差的是20题的电磁感应现象的判断和小计算。I卷集中反映出学生两个问题,一是电磁部分掌握较差,二是复习不扎实,考虑问题不全面。

三、 说教学目的

1、知识目标:通过分析试卷,查漏补缺,明确问题,矫正错误,并寻找出现错误的原因。

2、能力目标:通过典型错误的分析、矫正,掌握正确的思考方法和解题策略,培养分析问题、解决问题的能力。

3、情感目标:通过试卷评讲,增强学习信心;培养认真审题,仔细做题的好习惯。

四、 说教学重点、难点

教学重点:典型错误出错原因的剖析与矫正

教学难点:典型题目解题思路探究与解题方法分析

五、 说教学方法

启发引导、合作探究、讲练结合

六、 说教学过程

三段:自主阶段——合作阶段——反思阶段

(一)自主阶段

一、教师试卷分析

1、学生得分情况与考查知识点:(PPT展示)

2、老师评析总体答题情况,表扬取得较好成绩的学生。

二、学生自主纠错

要求:对基础性的试题,概念性的问题由学生参考课本及辅导书在个人能力范围之内先独立纠错。

(二)合作阶段

三、小组合作讨论

要求:小组内互助,对自己还不能改正的题目,主动向小组其他同学请教,鼓励答题正确的同学将自己的解题思路、方法讲给本组答题错误的同学,重点是探索方法和思路。

四、师生共同探究

目的:知识建构,方法建构

要求:对小组不能解决的问题,说出自己错误的思路、解题方法,其它小组有能力帮助解决的请代表进行讲评,学生之间都不能解决的或分析不清的,教师重点讲评。

五、考点补偿训练

要求:限定时间,完成对点训练题

六、反思总结提升

要求:学生根据《八模考试自我分析报告单》,对本次考试涉及的考点,自己的致错原因、对存在问题的反思、近期目标、对老师的期望和建议等进行反思总结。

【课堂小结】 检查教学目标的.落实

1、错因归纳 2、知识建构、方法建构

【作业布置】完成本次考试的考试分析报告单

七、说设计意图

高三课件【篇7】

知识目标

使学生了解自然界中水的分布状况;

水与工农业生产和人民日常生活的密切关系;

水污染的后果及防止水体污染;

了解水的组成及物理性质。

能力目标

培养学生发散思维及查阅媒体资料,获取信息的能力。

情感目标

培养学生树立节水观念,增强环境保护意识,为可持续发展做出自己的贡献。

培养学生团结协作的团队意识。

教学建议

本节内容大致可以分为:水对人类的影响,水的物理性质及水的组成,在处理这一节教材时,要充分以日常生活中的常见事例作为研究的线索。有条件的学校可以在课前布置研究课题,给学生一周的时间查找相关资料,特别是突出媒体信息量大的优势,通过互联网输入关键字词搜索相关信息,并要求学生对获取的信息进行加工,每2-3个学生为一个小组,通过课前准备发表自己的见解,可制作成powerpoint演示文稿或展板展示自己的研究成果。

通过这种组织形式可以提高学生学习化学的兴趣,特别是展示成果,无论对哪类学生来说,只要付出劳动,都会有收获,真正体现初中义务教育的全员性和教育的全过程性。特别对初中学生来说,强烈的表现_成为其学习过程的根本动力。水资源的有限,人类对水的需求的日益增加,工业化进程对水体的污染,对学生来说,有的可能了解很多,有的学生会一无所知,教师课堂上简单的介绍对增强学生的环境保护意识来说是远远不够的。让学生亲身去体验现实生活中,在我们生活中,水资源的浪费、水质的日益恶化等,使学生有一种危机感,自觉地从我做起是环保事业大众化的具体体现。

水的组成是本节课的另一个重点内容,它应包含两方面内容:

1.水的宏观组成,即:定性水的元素组成。

2.水的微观构成,即:定量。每个水分子所含原子的数目,从而得到水的分子式。这两个过程应有意识地加以区分,这样有助于学生了解化学学科研究物质组成的一般方法,为今后学生进行学习打好基础。电解水的实验是完成上述两个任务的经典实验,可以结合有关物理知识介绍实验装置,特别是电极的极性,两极产生气体的体积,两极产生气体的性质,然后结合有关数据帮助同学进行推导,从而得出结论。在这些过程中,应注意严谨性。

高三课件【篇8】

Step 1 Translate

1 匆忙的,慌忙的 2 随文化的不同而变化

3 直视着某人 4 把头靠在手背上

5 摆脱困境 6 感到闷闷不乐

7 按顺序排放 8 拆除 ;拆毁

9 使某人突然想到 10 把。。。集中于。。。

11 详细地 12 疯狂的想法

13 弯腰 14 把A 和B 搞混

15 与某人联络 16 帮某人一个忙

17 把手指放在嘴上 18 朝某人挥拳头

19 十指交叉合掌 20 耸耸肩

21 高昂着头 22 面部表情

Step 2 Grammar (-ing)

一、动名词和不定式的区别

1、作主语

(1)两者可互换, 但表示一次性的动作多用不定式,表示一般性、经常性的动作多用动名词

如:眼见为实。

抽烟是难以该掉的一种习惯。________________________________________

你今天抽这么多烟不好。 ____________________________________________

(2) It’s no use good + V-ing 只能用动名词 ;It’s + adj. +(for sb.) + to do 一般用不定式

如:In a shop, it is important ____________________. (使顾客满意是重要的)

It is no use __________________________. (现在考虑它没有用)

2、作宾语

(1)常用动名词作宾语的及物动词有:mind, finish, enjoy, excuse, imagine, keep

practice, suggest, miss, consider, prevent, appreciate, advise, avoid 等

如:我们班长建议对这个题目进行讨论。___________________________________

(2)常见的跟动名词作宾语的短语有:give up, can’t help, insist on, devote to, stick to, be fond of, set about, look forward to, depend on, feel like, be proud of, be used to, prevent sb. from, succeed in, pay attention to, get to 等

如:我们都盼望着访问你们国家。_______________________________________

(3)常用不定式作宾语的动词有:want, wish, agree, decide, begin, learn, pretend, ask, promise, plan, expect, refuse 等

如:他们计划明年来中国。______________________________________

(4)一些动词既可用动名词也可用不定式,意思差不多:begin, start, continue, prefer, propose等

如:I prefer_______/ ___________ (go) there this evening.

(5)一些动词既可用动名词也可用不定式,意思不一样:

①like, love, hate,不定式作宾语常表一次性动作,动名词作宾语常表习惯性动作

如:他喜欢游泳,但他今天不喜欢游。__________________________________

②remember, forget, regret to do 要做而没做

doing做过了

如:我忘记关灯了。_________________________

我记得已了关灯了。__________________________________

3、作表语 动名词、不定式作表语具有名词性质,说明主语内容。主语是名词时,表示一次性的动作,表语多用不定式;表示一般性、经常性的动作,表语多用动名词。

如:我今天的工作是给花园里的花浇水。_________________________________

我的工作是教英语。_______________________________________

4、逻辑主语:不定式的逻辑主语一般由for/ of 介词短语构成,而动名词的逻辑主语由形容词性物主代词(或宾格代词)和名词的所有格(或名词的普通格)来构成。

如:It is important________________________________(我们学习计算机很重要)

Would you mind ________/ ________ (I) opening the window?

_________ (Mary) being late delayed our meeting.

5、完成式 动名完成式表示的动作发生在谓语动词之前; 一些动词可用动名词的一般式代替完成式:remember, forget, regret, excuse, thank, apologize 等;动名词的完成被动式常可用其一般式来代替

如:He hated himself for not ___________ (work) hard.

She didn’t remember ________/________ (meet) him before.

He still remembers ___________/______________(praise) by a famous scientist.

6、否定式 动名词的否定式是在其前面加“not”, 动词不定式的否定式为:not +to do

如:I must apologize for _________ (not let)you know ahead of time.

She pretended ______________ (not see) me when I passed by.

二、与动名词连用的一些常用句式

(1)idea / method / habit / purpose +of +V-ing

(2)way / pleasure / time / chance/ plan/ power +of+V-ing

(3)have + difficulty / trouble / problem/ fun/ pleasure/ a good time + (in)+ V-ing

(4)There is no need / use / harm / hurry / need + (in) + V-ing

(5)On + V-ing (一。。。。。就。。。。)

如:他知道一种学习英语的新方法。

我没打算告诉他真相。

我们在开车通过雪地时遇到一些困难。

没有必要等了,他不会来了。

一听到这个消息,他禁不住笑了起来。

Step 3 Correction

1、I don’t feel like to go to the cinema tonight.

2、She is used to live in the village.

3、We hoped he being here would make the work easier.

4、I regret having not worker harder while young.

5、I’m thinking of go to visit my aunt.

6、I began knowing about the danger of pollution.

7、Remember posting the letter.

高三课件【篇9】

Teaching aims:

1. Develop the students’abilities of listening,speaking and reading

2. Learn the new words and some important drills

Teaching aids: a tape recorder,some slides for shows,

exercises for Lesson 1,pictures

Teaching Procedures:

Step 1: Revision

Greet the class. Ask “What’s the date today?”

Check the homework

Revise some questions in pairs

Step 2: Presentation

Talk about one student from the class. Teach “full name”

Write an English name and a Chinese name on the Bb to help the students to see the difference between English and Chinese names

Step 3 : Practice

Tell the students that Jim is giving a talk tomorrow.

Ask “What is Jim thinking about?

Play the tape for the ss to find the answer

Practise the dialogue in pairs

Step 4 : Reading

Ask “How many names do English people usually have?

Discuss Chinese names: What do Chinese people call each other for short?

Step 5: Exercises in class

根据句意及所给首字母完成下列句子

1.The t _____ must stop when the lights are red.

2.This afternoon's meeting is very i_____ .Everyone must be at the meeting.

3.Can you tell me the d_____ between Chinese and English names?

4.He's going to give us a t_____ on how to learn English well.

5.I think the s_____ lesson is very interesting.

Step 6: Important words

1.Call 1) call sb / give sb. a call

2) call one’s name 3) call him Jim

2. be short for… / for short 3.give a talk /talk about

4.be different from…/the difference between A and B

5.mean (v.) meaning (n.)

Blackboard Design

Lesson Two

the second lesson

give a talk think about

for example full names

given name be different from

be short for for short

the difference between Chinese and English names

高三课件【篇10】

Aims and demands:

通过本单元的教学,学生应能熟练地运用表示“禁止和警告”的常用语;复习定语从句和同位语从句;了解蜜蜂的习性,培养学生对科学研究的兴趣。

Importance and difficulty:

1. words and expressions: one after another, to his astonishment, come up, come to light

2. sentences:

A. Among the different types of bee, it is the honey bee that has most interested scientists because of the “language” they use to communicate wit each other.

B. To answer this question, Von Frisch and his co-worker set up a feeding place close to the hive.

C. Back at the hive they watched the wagging dance closely.

3. Grammar: Attributive and appositive clause

A. I still remember the time when I joined the army.

B. The pen which you are using is mine.

C. There is no doubt that this is the only way out.

D. I have no idea whether I will leave or not.

4. Useful expressions:

A. You can’t / mustn’t

B. Look out!

C. Be careful!

D. You’d better not do …

E. Don’t ….

Lesson 85 The language of honey bees (1)

Aims and demands:

Develop the Ss’ reading ability and have a better understanding of the text.

Deal with the language points:

Importance and difficulty: Understanding and the usage of the language points.

Teaching aid: tape recorder

Teaching procedure:

Step 1. Warming up ( picture showing )

T: What are these? ------ bees

T: What kind of people are compared to bees? ---- hard working people

T: Do you know what bees feed on? ----- pollen ( 花粉 ) and nectar ( 花蜜 )

T: Do you like bees? Why or why not?

Ss: People can collect honey made by the honey bees.

I am afraid of being stung / bitten.

T: All female bees have a sting.( bite – bit – bitten )

T: What are these bees doing ? ----- dancing

T: Some are making a circle dance and some are making a semicircle dance.

What do these dances mean?

----The circle dance meant that food was near. The wagging dance meant that food was far away.

Step 2. Reading

Read the text and find out the answer and do the comprehension 2.

Step 3. Careful reading and do the other comprehension

Wb, paper comprehension , Questions.

Reading completion for Unit 21 (Lesson 85)3B DDABD DDBD

1. Which of the following statements is right?

A. All the bees live together.

B. Most bees live together.

C. Many bees live together.

D. Some bees live together.

2. The scientists can study the language of honey bees only after the development of ___.

A. the modern beehive B. experiments

C. dishes of honey D. both A and B

3. You can find out the main idea of the text simply from ___.

A. the title

B. the first sentence of paragraph 1

C. the first sentence of paragraph 2

D. the first sentence of paragraph 3

4. The phrase “tell the bees apart” in paragraph 2 means ____.

A. let the bees live separately

B. tell one bee from the other

C. drive the bees away

D. tear the bees into pieces

5. Karl bon Frisch made an experiment to research __.

A. the food of honey bees

B. the dance of honey bees

C. the hive of honey bees

D. the ways honey bees communicate

6. The marked bee told the other bees by ___.

A. making a circle to the left

B. making a circle to the right

C. performing a circle dance

D. all of the above

7. After the marked bee danced, the other bees ___.

A. danced together B. became very excited

C. seemed not to notice it D. both A and B

8. Different dances indicate different __.

A. food B.feeding places C.steps D.semicircles

9. The circle dance communicates ___.

A. the distance of food B. the information of food C. the amount of food D. both A and B

Step 4. Listen toe the tape and deal with the language points.

1 . It is the honey bee that has most interested scientists.

The scientists are most interested in the honey bee.

The honey bee is most interesting.

2. communicate with : pass information to sb. or to and animal

3. The development of the modern beehive in 1851 made it possible to design.

我发现学习英语口语是很重要的。

I found it important to learn spoken English.

我认为掌握一门外语是很难的。

I think it difficult to master a foreign language.

暴风雨使他们不可能准时出发。

The storm made it impossible for them to start / set out on time.

4. spend…in doing sth.

spend …on sth

5. 先行词是way 的定语从句中,引导词可以是:that , in which , / .

eg. I don’t like the way he acts. ( that he acts. / in which he acts. )

6. again and again

over and over

over and over again

7. one after another

one by one

8. tell… apart : be able to know one from another

The twins are so much alike that we can hardly tell them apart.( tell one from another)

你能辨别这两件东西吗?

Can you tell the two things apart?

9. to one’s astonishment

to one’s surprise

10. The dance seemed to excite the surrounding bees.

The surrounding bees seemed to be excited by the dance.

11. troop: come or go together in a group

12. faraway adj. adv. 作定语时连写,作表语时常分开

nearby adj. adv. prep. 作定语时连写,作其他时有板有3 种形式

nearby , near-by , near by

13. wag: to shake quickly and repeatedly from side to side 摇摆

The dog wagged its tail with pleasure.

Step 5. Wb.

Homework

Lesson 86 The language of honeybees (2)

Aims and demands: Develop the Ss’ reading ability

Importance and difficulty: Have a deeper understanding of the text and develop their reading skill

Teaching aids: tape recorder and slides

Teaching method: reading and writing

Teaching procedure:

Step 1. Revision

T: Do all the bees live in groups? (No.)

Where do other types of bee live? (In holes in the ground, in holes in the rocks or trees.)

What was the name of the scientist who did research into bees? (Karl Bon Frisch.)

Was Bon Frisch a New Zealander ? (No, he was Austrian.)

What was special about the beehive he built for his research? (it had only one honeycomb and a glass wall.)

How did he mark the bees? ( With spots of colour.)

What did the wagging dance mean? (It meant that food was far away.)

What dance means food was near? ( Circle dance.)

Step 2. Reading

Read the text and do the comprehension exercises:

Text comprehension 2

Workbook Ex 1

Paper comprehension

Reading comprehension for Unit 22 Lesson 86 (3B)

1. Skim the passage to figure out what the different dance dances mean and them make a choice.

Dances Meanings

A. a circle dance

B. a wagging dance

C. a faster wagging dance

D. a slower wagging dance 1.Food is closer.

2.Food is farther away.

3.Food is near.

4.Food is far away.

II. Further comprehension (Lesson 86) CCBDC

1. Which is Wrong about the further information the professor and his men discovered?

A. The closer the feeding place is, the faster the wagging dance is.

B. Bees fly a maximum distance of 3.2 km between their hive and a feeding place.

C. The speed of the wagging dance can tell about the amount of food.

D. The direction of the wagging dance tells the direction of the feeding place.

2. Professor Von Frisch did his third experiment to discover ___.

A. whether the wagging dance showed direction

B. how far bees can fly between their hive and a feeding place

C. whether the wagging dance told the bees how far away a feeding place was

D. how the straight part of the wagging dance was different when the sun’s position changed

3. “So another astonishing fact came to light .”The underlined part can be replaced by ___.

A. came up B. was discovered

C. remained unknown D. needed to be checked out

4. ____ can show the different position of the sun.

A. The right part of the wagging dance

B. The left part of the circle dance

C. The straight part of the circle dance

D. The straight part of the wagging dance

5. What can be inferred from the fourth paragraph?

A. Honey bees can pass news of food at high speed.

B. Man can communicate in the same way as honey bees do.

C. Man can learn something from animals’ behavior.

D. The expression “to make a beeline for someone or something” was used centuries ago.

Step 3. Language points

Underline the language points

Step 4. Practice

Practice 3

Note making 4

Wb. Ex 2

Homework : Note making 4

Wb Exercises

Unit 22 Lesson 85~86 Language points

Correct the mistakes if any.

1. It was in this house which we lived last year. that

2. Where was it Mr. Smith met his friend yesterday? That

如何区分定语从句和强调句型

3. It is this house that we lived in last year. 定语从句 (此句的主句为一般现在时,从句为过去时,显然不是强调句。)

4. It was in this house that we lived last year. 强调句。强地点状语

5. It was this house that we built last year. 强调句。 强调宾语

6. The development of modern beehive in 1851 made that possible to design experiments to research the language pf honey bees. it

7. The music made this possible for you to fall asleep. it

a. It 在句中可作代词(前面提到过的事物或一个句子, 或一个部分)

---- Look at that girl on the stage . She is already fifty.

----You are joking. She doesn’t look it.

b. it 也可作强调 it

c. It 作形式主语或形式宾语

8. Many people criticized me , but I did what I thought it was right.

9. The twins are so much alike that we can hardly say them apart. tell

tell 常与 can, could , be able to 连用表示区分。识别。

tell…apart

tell… from

10. I don’t like the way which he acts ./ he speaks to his mother. That . in which . /

11. I don’t like the way in which he told me to learn English.

he learned English. Which . that

在定与从句中,当先行词是 way 时,如果在从句中作状语用 that, in which, /;

而在从句中作宾语则用 that , which.

11. In his surprise , he found nobody in the classroom. To

to one’s surprise , astonishment, pleasure, anger, disappointment, joy , delight , happiness…

12. The game was over and the players trooped to home .

go home

troop home

on one’s way home

14. The house is not faraway. Far away

Faraway :作定语时常连写;作表语、状语时则分开。

Nearby : 可作定语、状语,既可连写(nearby)也可分开(near by ) 还可加连字符号( near-by )

15. I saw her going to a near-by post-box before lunch.

16. They live nearby ---- less than a kilometer.

17. He gave up his seat to the old man standing near by.

18. What I want is to get farther education. Further

19. Translate:

The farther away the feeding station was, the slower the dance was.

喂食地点越远,蜜蜂舞跳得越慢。

它给孩子们的越多,他们想要的就越多。

The more he gives his children , the more they want.

你越早做那事就越好

The sooner you do it, the better it will be.

20. So another astonishing fact came into light. To

21. 这笔钱直到那位老人临死才透露出来。

The money didn’t come to light until the old man was going to die.

21. The number of students in our class are 53. is

22. A number of students in our class is out by the lake. are

23. Now we have flew a distance of about kilometers. flown

24. As he spoke he made a beeline to the door. for

make a beeline for 走直路, 走近路

head for 前往(某地)

Step 2. Exercises (useful expressions )

Fill in the blanks with a proper word.(Unit 22)

1. In order to tell the bees apart, he painted some bees with little spots of colour.

2. We set out in search of / for the lost child on a stormy night.

3. A new hospital will be set up next to our school.

4. After a short while , a line of bees fly to and from the hive like a thin stream.

5. Go upward along the path, you’ll find the temple on the top of the hill.

6. The students came into the classroom one after another.

7. He cares more for music than for anything else.

8. When Jack arrived there, he learned Mary had been away for almost an hour.

9. We’ll play a game . Please stand in rows.

10. Don’t get close to the river. It’s dangerous.

11.We solve the problems as soon as they came _up__.

12. Where was it _that__ Mr. Smith met his friend yesterday.

13. The suggestion was made _that__ shops remain open till ten in the evening.

14. Was it because of illness _that__ Tom was absent from school?

Step 3. Practice

Correct the mistakes if any ( Lesson 85~86)

1. It was in this house which we lived last year.

2. Where was it Mr. Smith met his friend yesterday?

3. It is this house that we lived in last year.

4. It was in this house that we lived last year.

5. It was this house that we built last year.

6. The development of modern beehive in 1851 made that possible to design experiments to research the language pf honey bees.

7. The music made this possible for you to fall asleep.

8. ---- Look at that girl on the stage . She is already fifty.

----You are joking. She doesn’t look so.

9. Many people criticized me , but I did what I thought it was right.

1. The twins are so much alike that we can hardly say them apart.

2. I don’t like the way which he acts ./ he speaks to his mother.

3. I don’t like the way in which he told me to learn English./he learned English.

4. In his surprise , he found nobody in the classroom.

15. The game was over and the players trooped to home .

16. The house is not faraway.

17. I saw her going to a near-by post-box before lunch.

18. They live nearby ---- less than a kilometer.

19. He gave up his seat to the old man standing near by.

20. What I want is to get farther education.

21. 译:The farther away the feeding station was, the slower the dance was.

它给孩子们的越多,他们想要的就越多。

你越早做那事就越好。

22. So another astonishing fact came into light.

这笔钱直到那位老人临死才透露出来。

23.The number of students in our class are 53.

24. A number of students in our class is out by the lake.

25. Now we have flew a distance of about 2000 kilometers.

26. As he spoke he made a beeline to the door.

Homework

高三课件【篇11】

成都市新都区第二中学 熊友林

高二下册第20单元考古之综合技能教学设计

Teaching Design for Integrating Skills, Untit20 Archaeology, Book 2B

教材内容分析

Integrating skills仍然围绕本单元的中心话题“考古学”展开的,由阅读和写作两方面内容组成。阅读部分探寻了中华文明的源头,介绍了四川的考古发现-金沙和三星堆两个古文化遗址。两个遗址中所发现的大量文化遗迹,对研究古蜀国的地貌﹑气候﹑环境和历史文化都具有极其深远的意义。我国拥有神秘而又博大精深的文明,很能激发学生的民族自豪感。作为古蜀人的后代,我们更为先人所创造的灿烂文明而骄傲。通过学习,讨论考古发现,激发学生的好奇心和求知欲望。写作部分让学生们讨论在发现古文物时,该做什么,不该做什么。要求学生编流程图并增强学生保护文物的意识。学生分析

1. 经过前面几个课时的学习,学生对考古学方面的知识有了一定的了解和兴趣,但对我们的身边的考古文化和古老文明了解还比较有限;

2. 学生多数来自农村,虽然离金沙遗址和三星堆遗址很近,但很少有学生去参观过,加之信息渠道很有限,对其了解不多;

3. 学生具备一定的阅读理解能力,但在有限的时间内查找特定的信息和分析处理的能力还有待提高;

4. 以前接触过流程图,有一定的基础,但自己编写流程图还是第一次;

5. 课堂上学生活动积极,但人数多,调控有一定的困难。

教学目标(Teaching aims)

1. Learn and master the following:

quantity, serve as, mask, dig up, accompany, vast, square, triangle

2. Help the students to read a passage using the skills of fast reading and careful reading and create a flow chart.

3. Help the students to build up their integrating skills.

4. Help them to build up the ability to make use of information and process it according the demand and cooperate in a team and enjoy learning English

5. Help students realize the importance of the relics , inspire their pride of our country for her rich ancient culture and have correct sense to protect them.

其中,第1点为语言知识目标,第2点为语言技能目标,第3点和第4点是能力目标,第5点为德育目标。

设计思想

根据《高中英语教学大纲》的要求,在课堂教学中,必须以学生为主体,为中心进行教学,教师在教学中起主导作用。因此我采用任务型教学方式,每一部分都设有一定的任务,引导学生自主或者合作完成。教学过程由两张文物图片开始,引入本课阅读文章,进行所设计的快速阅读和仔细阅读活动,对文章进行相应要求的理解。阅读活动由整体入手,由易到难,步步推进,层层深入。接着进行听力活动,并观看三星堆的视频资料,旨在让学生对古蜀文明有一个更直观的了解,增强他们对家乡和祖国的自豪感。讨论部分旨在引导学生有正确的文物保护观和做法,并为写作流程图打下铺垫。在讨论的基础上进行流程图的写作指导便是水到渠成的事了。整个教学活动以教材为载体,以学生为中心。学生参与活动贯穿始终。学生既有个人活动,又有小组活动和班级活动。

在课堂教学中,学生应该跟老师学学习方法,提高阅读速度和阅读技巧,查找﹑分析﹑处理信息的能力以及写作能力。积极参与小组的各项活动,展现自己和小组的能力,并培养团队协作能力。在整个教学活动中,学生充分调动其各个感官进行听、说、读、写,积极主动的学习。

教学媒体1.the multimedia teaching system

2.the blackboard

教学过程(Teaching Procedures )(40 ms)

教师活动内容﹑方式 活动内容﹑方式 备注

Step 1 Leading in

Good morning, class. We’ve learned the rich culture in England . As you know, we Chinese have a long history with a rich and colorful culture, too, which we are take pride in. Let look at two pictures of unearthed objects somewhere in China.

Show students the pictures of unearthed objects in Sanxingdui and Jinsha Village, and ask them questions:

1. Have you seen the pictures?

2. What do you know about them?

3. When and where were they found?

Step2. Fast reading

China has a brilliant culture of about 5 000 years. Do you know the roots of Chinese culture? Now, let’s turn to page 78 and read the passage about roots of Chinese culture. Ask the students to read the text quickly and answer the questions

1. What cultural relics sites are talked in the text?

2. What objects have been dug up in the sites?

Show the first form on the screenShow the pictures of the objections for Q2

Step3. Careful reading

Just now we learnt something about the two sites. At present let’s read the passage carefully and learn more about them.

1. Where are the two sites located in?

2. When were they discovered?

3. Who discovered them?

4. What places did Sichuan have trade links with?

5. What do archaeologists hope to discover at the Sanxingdui site?

Show the second form on the screenShow the location of Sanxingdui and Jinsha

Ask the students to pay attention to the new words and phrases:

quantity, serve as, mask, dig up, accompany, vast, square

(write them down on the blackboard)

Step4 Listening & watch

A. Listening

Let’s listen to the text and decide which of the following statements are true and which false.

1. The relics found at Jinsha are a bit alike those at Sanxingdui, so it gives archaeologists a good chance to study the Chinese culture.

2. Ivory and animal bones can serve as materials to study climate and the environment in ancient times in Sichuan.

3. It is believed that Sichuan had trades with Japan 3000 years ago.

4. Cong, a piece of jade found at Jinsha was made in Chengdu.

5. It is said that many relics found at Jinsha date back to between 5,000 BC and 3,000 BC.

6. The Sanxingdui Site covers so large an area that the digging work will last until .

Step 5 Discussion

1. Yan Kaizong accompanying his grandfather gave the precious relics to the government in 1953. Is it foolish of him to do so? Why?/Why not?

Suppose you were construction workers working at Jinsha Village, and you discovered some jade or gold objects in the field, what action would you take and what decision would you make?Ask students to discuss it and write down the important steps and decisions

Step6. Writing

After construction workers found ivory and jade in the mud when they were building roads there. What steps and decisions did they take?

Ask three groups to write down their steps on the blackboard and then collect all the steps and decisions on the blackboard. (write down)

1. Ask the students to decide in which order steps and decisions are taken.

2. Ask the students to create different shapes for different types of action, for example: triangles for decisions, circles for the discoveries, boxes for things that are going on and diamonds when calling in other people.

3. Then ask the students to draw the arrows to show the direction of the flow.

4. Ask the students to check for missing steps.

Show the example on the screen

Step 7. Homework

Chengdu Plains has a long history. The ground contains cultural relics and important archaeological objects almost everywhere. Make a poster showing a flow chart of the things you should do when you have discovered some old things in the ground.

Individual activity. Enjoy the pictures and answer the questions

Individual activity.

Read quickly and fill in the form. Enjoy the pictures

Individual activity.

Read quickly and fill in the form. Look at the map and make it sure where they are.

Listen and finish the task

Watch the video.

Group activity.

Discuss in a group and share the information

Group activity.

Discuss in a group ,write down the steps and report to the class

Group leaders write down their steps on the blackboard.

Group activity.

Discuss and finish the task step by step following the tips

板书

如果已过15分钟,就把语言点留到下堂课

承上启下,关系写作进行,根据学生反馈机动调整

板书

评价与反思(assessment and reflection)

教师反思

1. Have all the teaching aims been reached? _________________

1. Have all the students learnt something in the lesson? ________________

2. What can be improved? _______________________

学生反思

1. What impressed me most in the class? ________________

2. what haven’t I understood yet? ________________

3. In what aspect do I need improvement? ________________

学生课堂活动评价

Class: Name: Score:

Items Understandable 5 4 3 2 1

Logical 5 4 3 2 1

Creative 5 4 3 2 1

Active 5 4 3 2 1

Cooperative 5 4 3 2 1

Others 5 4 3 2 1

高三课件【篇12】

长辛点铁路中学 王雅芳

Type of lesson:integrating skills(reading and writing)

Teaching aims:

1. Understand the text

2. Learn how to write a description of a place

Teaching aids: writing material,computer

Teaching Procedures

StepⅠ:Leading-in

Ask the Ss to look at the picture and ask them the following questions:

―――What can you see in the picture?(the cathedral)

―――Where is it ?(in Salisbury)

―――Which country does the city belong to?(England)

StepⅡ:Reading

1. Ask the Ss to read the text and then answer the following questions:

1) What do we see in the landscape around Salisbury?

2) What historical and cultural relics can be found around the city?

3) What can we see in the city?

4) How do the people live and work?

5) What does the landscape in the suburbs of Salisbury look like?

2. Discussion:What did the author write in each of his paragraph?

→→ →

StepⅢ:Writing

1. Pre-writing

Ask the Ss to discuss how to describe a place

Give them some information:

2.While-writing

Ask the Ss to write a passage by answering the questions

1) where is your hometown?(south-east of China)

2) is it big? How many people are there in your hometown?(no,a small city, a population of about 200,000)

3) are there any historical relics in the city?(yes,a temple built in Ming Dynasty)

4) what is the main industry in the city?(soap industry)

5) What do you think of the people in the city?(warm,friendly)

6) What is in the wild beautiful countryside near the city ?(many hills and streams)

7) How do you find your hometown?

3. Post-writing

In this step,help the Ss realize that self-evaluation is very important, and at the same time tell them how to do the self-evaluation

Ask the students to evaluate their passage according to the following points and make necessary corrections

1) Are the punctuation and capitalization correct?

2) Is the spelling correct?

3) Are there any grammatical structures you need to improve?

(tense,voice,sentence structure)

4) Is it well organized?(conjunctions)

5) Are your ideas expressed clearly?(the usage of the verb)

6) Do you write in complete sentence?

Key points Grammar: Language:

( )sentence1

( )sentence 2

( )sentence 3

( )sentence4

( )sentence 5 ( )capitalization

( ) Spelling

( ) Punctuation

( ) Tense ( )词汇准确

( )句式正确

( )逻辑清晰

Ask the students to do peer-evaluation

Key points Grammar: Language:

( )sentence1

( )sentence 2

( )sentence 3

( )sentence4

( )sentence 5 ( )capitalization

( ) Spelling

( ) Punctuation

( ) Tense ( )词汇准确

( )句式正确

( )逻辑清晰

Ask the students to do class-evaluation

(Choose one of the students’s writing)

Key points Grammar: Language:

( )sentence1

( )sentence 2

( )sentence 3

( )sentence4

( )sentence 5 ( )capitalization

( ) Spelling

( ) Punctuation

( ) Tense ( )词汇准确

( )句式正确

( )逻辑清晰

One possible version:

My hometown lie in the south-east of China. It is a small city, with a population of about 2000,000 people.

In the city ,there is a temple built in Ming Dynasty .The main industry is soap industry. And the people are warm and friendly. There are many hills and streams in the wild beautiful countryside near the city.

My hometown has a blue sky, green water and a bright future, she is a charming city, I love my hometown.

4).Conclusion

Ask the Ss to list the main sentence structure that can be used to describe a place and people

lie in/on/to be in/on/to there be

bewarm/friendly/kind/hardworking/generous/ nice/pleasant/honest/independent/easy-going/brave/optimistic…

StepⅤ: homework

Ask the Ss to write a passage about their own hometown

高三课件【篇13】

Aims and demands:

通过本单元教学,学生应能熟练地运用表示“邀请”的常用语;复习谓语,情态动词和实义动词的时态;了解应如何地阅读,以及怎样做一个好的听者。

Importance and difficulty:

1. Words and expressions:

dip into, look our for, refer to , get at , respect, enlarge, digest, come across

2. Important sentences:

1) Imagine that you have found a good story, and , what is even more important, the time to enjoy it.

2) Do not start a book unless you can see from the first few pages that it is one you can easily read and understand.

3) The more we practise, the better we get at listening to speech in a foreign language.

4) Then it will be someone else’s turn.

3. Grammar:

1) If he comes, I will let him know.

2) You’re always making the same mistake.

3) I didn’t expect to meet you here.

4) If you have finished reading the magazine before I leave, please give it back to me.

5) He suddenly remembered that he hadn’t locked the door.

6) Given more time, we could finish it.

7) The ground is wet. It must have rained last night.

4. Useful expressions:

1) Would you like to …?

2) I’d like to invite you to…?

3) Have dinner with us , will you?

4) Yes, I’d love to ….

5) I’d love to , but……

Aims and demands:

1. Develop the Ss’ four skills , listening , speaking, reading and writing ability.

2. Let them know how to read different kinds of books.

Importance and difficulty:

Let them have a good understanding of the text and do the deeper understanding comprehension .

Teaching methods:

Teaching aids:

Teaching procedure:

Discussion: 1. What do you enjoy reading most?

2. What do you enjoy reading least?

3. What good books have you read recently?

4. What good stories have you read?

Read it quickly and find the answers to the two questions at the top of the text.

1. What are the three methods of reading which are described?

Tasting, swallowing, and chewing-and-digesting.

2. What is the most important piece of advice in the text?

Enjoy your reading.

Read it carefully and have a good understanding of the text.

Complete the following form on reading .

If you pick up a travel book just to read it before going to sleep It is enough for you to dip into it and read bits here and there. This is “tasting”.

If you have found a good story and the time to enjoy it You might go over it quickly from the beginning to the end, for it is so good that you cannot put it down. This is “swallowing”.

If the book you have is on a subject that you are interested in You will want to “chew and digest it”.

Read it slowly and carefully.

If it is not a story You may get an idea of the organization of the book. Read the back cover and the introduction. Look at the pictures and the short texts below them. Turn to the front of the book and look at the contents.

When you read a book for the first time You read a chapter quickly to get a general idea. Then, if you wish, you can read it once again more slowly.

When you want to use a dictionary You should know that you use it when necessary. Do not stop every time you come to a work or phrase you do not know. Quite often you will find the unknown word appears again, perhaps several times, and by the end of the chapter you will have guessed its meaning.

If you do not know what to read You may start by making a list of all the types of books that you enjoy reading in Chinese.

Number these subjects in the order in which they occur in the text.

Page 14.

Step 6. Note making.

Write down in your own words the advice the writer gives in the text. Page 14

Step 8. Comprehension exercises---- paper

Step 9. Listening and find out the importance and difficulty

Lesson 58 The art of being a good listener

Aims and demands:

1. Develop the Ss’ four skills: listening , speaking , reading and writing ability.

2. Teach them how to be a good listener.

Importance and difficulty:

Have a deeper understanding of the text and do the comprehension exercises.

Teaching methods: reading and speaking

Teaching aids: tape recorder and some slides .

Teaching procedure:

Ask Ss what they have learnt about reading in the previous lesson.

Ask them to talk about any techniques of their own which they find useful.

Step 2. Presentation and reading for general understanding

Read the title of the text aloud and get the Ss to talk about the Chinese character ting in the picture.

聽 Read the two comprehension questions aloud, then allow the Ss enough time to read the text and compare their answer in pairs.

1) Mainly about listening to people.

2) Both advice and information.

When you listen to someone,

what should you do?

Look at the speaker as Listen with complete

a sign of respect . attention, and with

the other person.

You should look at the speaker as a sign of respect while you are listening.

You should listen with complete attention , and with complete respect for the speaker.

More tips on First …

becoming a Second …

good listener Third …

1)Take turns to listen.

Don’t all try to speak at the same time when you are in a group.

Listen without interrupting, and stop other people from interrupting.

2)Do not give advice when your friends have problems. Ask some questions instead, such as “What do you want? How do you feel about it? What are you afraid might happen?”

3) Listen and be quiet while others are talking.

Step 4. Note making and discussion

Step 6. Comprehension exercise ----paper exercises

Aims and demands:

Grasp the language points.

Importance and difficulty:

Let them know the usage of the language points.

Teaching aids:

Some slides and a small blackboard.

Teaching procedure:

1. 有些书是应当尝尝滋味的,有些书是应当吞下去的,有少数书是应当咀嚼和消化的。

Some books are to be tasted , others to be swallowed, and some few to be chewed and digested

be +不定式的被动式结构表示“某事应当/ 必需如何做”的意思,常用在通知和说明书里。

The books you borrowed are to be returned before July 5. (应当于7月5日前归还)

This medicine is to be taken three times a day after meals. (此药一日三次,饭后服用)

子女“下达命令”。be +不定式结构通常用来表示“按计划或安排将要做的事情”,或表示上级对下级,父母对子女“下达命令”。

The train is to arrive in Beijing at 10:30.

你得完成作业后才能看电视。

You are to finish your homework before you watch TV.

I’m to meet him at the station. (双方约好)

I’m going to meet him at the station.(个人打算)

2.这种书只要浏览一下,这儿读一下,那儿读一下,也就够了。

It is enough to dip into this kind of book (it) and read bits here and there.

I haven’t read that book seriously , I’ve only dipped into it. (翻阅)

Each student dipped a finger into the mixture and sucked it. (伸入)

3.不要一遇到不认识的单词或短语就停下来。

Don’t stop every time you come to a word or phrase you don’t know.

every time 一。。。就。。。(从属连词,引出表示时间的状语从句)

每当他碰到一个好的句子,他就把它抄下来。

He copies it down every time he comes to a good sentence.

Make a sentence……

4.你有什么特别嗜好或特别喜爱的体育运动吗?如果有, 你就该找一些有关的书籍,文章或杂志来读。

Are there any hobbies or sports you particularly like ? If so, look out for books , articles or magazines about them.

He has been looking out for a new job for half a year.

He has been looking for a job for half a year.

5.“听的能力”这个词组有两个意思。一个是指我们学习外语时所作的那种听力练习。另一个意思是指善于倾听别人讲话的艺术。

There are two meanings of the phrase “listening skills”. One refers to the type of listening practice which we do when learning a foreign language .The other meaning is about / (refers to) the art of being a good listener to other people.

refer to …

when doing…

6.我们练习得越多,就越能更好地听懂用外语所说的话。be good at listening to speech

The more we practice, the better we get at listening to speech in a foreign language.

get better at doing = be better at doing … 更善于做…

7.因此,当你听某人说话时,你要一心一意地听,对别人完全尊敬。

So when you listen to someone , you should listen with complete attention, and with complete respect for the other person.

with complete attention (作方式状语,修饰listen)

show / have respect to (for ) sb. (对……尊敬)

8.我们常常需要的是一位能倾听我们“畅叙衷肠”的好朋友。

Often, all we need is a good friend who will listen to us while we “talk things through” .

We talked the plan through for nearly an hour.

我们对计划讨论了将近一个小时。

After three long meetings , the question seemed to be talked through.

经过三次长时间的会议后,这个问题似乎已经详细讨论过了。

高三课件【篇14】

一、教材分析

本册书中,第十七章《欧姆定律》是电学中的基本定律,是进一步学习电学知识和分析电路的基础,是学习电功率、家庭电路等后续章节的必备知识。本章本身就具有承上启下的作用,是电学的重点之一。而《电流与电压和电阻的关系》一节十分重视科学方法的渗透,重视科学探究过程,主要是引导学生进行探究性实验,让学生在探究过程中体验方法、学习方法,利用“控制变量法”对“电流、电压、电阻”三者的关系进行一个定性分析,是了解得出欧姆定律的过程,因此,这是学生在学习了电流、电压、电阻等概念以及电压表、电流表、滑动变阻器使用方法之后的进一步总结深入,也是掌握电学最重要规律之一《欧姆定律》的前提。

同时,本节内容的探究实验是一个比较完整的探究,它涵盖了探究的七个基本要素:提出问题、猜想与假设、制订计划与设计实验、进行实验与收集证据、分析论证、评估、交流与合作。通过这部分的学习使学生深刻领悟科学探究的意义,掌握研究问题的科学方法,培养了小组合作的交流意识。通过本节课学习,主要是为了让学生掌握同一电路中电学的三个基本物理量之间的关系,进一步了解运用“控制变量法”研究多个变量间的关系的实验方法,为进一步学习电学知识打下基础。

二、学情分析

在之前的学习中,学生已经掌握电流、电压、电阻等电学基本知识,为我们本节对“电流、电压、电阻”三者的定性关系进行探究做了铺垫。但由于学生对已有知识的理解层次有所差别,而且存在一定的能力差距,所以常出现“一听就懂,一丢就忘,一用就错”的问题,主要是因为目前学生在分析处理问题时缺乏具体的思路与方法。

根据本学段学生心理和年龄特点及学生的实际水平,针对教材的地位和作用。依据课程标准我拟定了以下教学重点与难点。

三、重点与难点

根据对教材的详细分析,本节课是通过学生自主探究实验,发现电流与电压和电阻的关系,从而对实验数据进行分析,得出结论。因此,运用控制变量法进行实验设计与连接实际电路既是本节的重点,也是难点之一。与此同时,组织好学生运用表格法、图像法等科学方法进行实验数据的处理分析,也是本节的难点之一。

四、教学目标

根据对教材的分析与学生实际情况分析,为有效突破本节教学重点与难点,我从知识与技能、过程与方法和情感态度与价值观三方面设置了本节的教学目标:

1.知识与技能:

通过实验探究电流与电压、电阻的关系,让学生经历科学探究的全过程,掌握连接实际电路的方法与技巧。

2.过程与方法:

①在教师以递进式设问方式的引导下,能够利用“控制变量法”进行实验设计,从而掌握“控制变量法”的运用;

②通过实验数据的处理,掌握实验数据处理的常用方法。

3.情感态度与价值观:

①通过学生自身经历探究实验过程,培养学生实事求是的科学态度;

②通过小组探究实验,培养学生合作交流意识。

五、教学方法

为成功达到教学目标,根据学生实际情况,在教与学方面,本节课主要牵涉到以下方法:

1.教法方面

针对本节以实验为基础的特点,在教学过程中不能只限于探究的形式,而必须充分发挥学生的主体作用,教师的主导作用。主要采用在教师的指导下让学生自主实验探究的方法进行教学。通过引导探究实验,让学生亲身经历探究的过程。具体方法包括:递进式提问法、讨论法、分组探究法、师生互动法等。通过学生分组实验,相互讨论交流,相互启发,相互促进,培养学生的动手能力、分析综合能力,并且通过具体的实验设计掌握利用“控制变量法”研究问题的方法,达到共同进步的目的。

2.学法方面

本节课的主体是学生,主要内容是学生进行探究性实验,得出结论。因此在学习本节内容时,学生主要使用的学习方法有:小组实验法、自主探究法、讨论法等。学生通过利用各种学习方法,能够顺利完成课堂内容的同时,培养了自身的综合能力。

六、教学设计

针对前面的分析,依据学生实际情况,设计以下教学环节:

1.引入环节:结合学生已有知识,以提问“电流的影响因素”引入,有效降低学生学习难度。

2.新课讲授:结合“电流的影响因素”,对“控制变量法”进行讲解,同时引导学生分析得出进行探究实验的方法——保持R不变,改变U,观察I或者保持U不变,改变R,观察I。

3.实验设计:利用递进式提问方法,引导学生进行实验设计:

设问目的

在探究电流与电压的关系时,如何保持电阻R不变?

明确选用定值电阻R

如何改变定值电阻两端电压U?

明确滑动变阻器在本实验中的作用

需要用到哪些实验器材?

让学生明白实验器材的选择方法

如何连接所选用的实验器材?

锻炼学生设计实验电路的能力

马上要开始实验了,实验前我们还要准备什么?

锻炼学生设计实验步骤的能力,理清实验思路

根据大家的实验步骤,有什么特别要注意的地方吗?

提醒学生实验注意事项,培养学生严谨的思维能力

4.分组探究实验:教师组织学生开始分组探究实验,现场进行指导,及时帮助学生解决遇到的各种问题,协助完成探究实验。

5.评估交流:教师引导学生以小组为单位,对自己的探究活动进行展示、回顾、分析,思考设计方案有无不合理的地方,操作有无失误,测量结果是否可靠?

七、教学效果设想

因本节课是在充分分析了教材、学生情况等进行了重点、难点的拟定、教学方法的选择以及教学环节的设置,在学生已有知识的基础上,以递进式提问的方式引导学生顺利进行实验设计、完成实验。应该说,学生对本节课的学习难度大幅度下降,更容易掌握新知识,同时也能够从本节课的学习中进一步掌握“控制变量法”以及为下一节《欧姆定律》的学习奠定了基础。这样的课堂设计,会比较有效地达到所设定的教学目标,学生学习积极性较高。

高三课件【篇15】

教学重点:

理解等比数列的概念,认识等比数列是反映自然规律的重要数列模型之一,探索并掌握等比数列的通项公式。

教学难点:

遇到具体问题时,抽象出数列的模型和数列的`等比关系,并能用有关知识解决相应问题。

教学过程:

一、复习准备

1、等差数列的通项公式。

2、等差数列的前n项和公式。

3、等差数列的性质。

二、讲授新课

引入:

1、“一尺之棰,日取其半,万世不竭。”

2、细胞分裂模型

3、计算机病毒的传播

由学生通过类比,归纳,猜想,发现等比数列的特点

进而让学生通过用递推公式描述等比数列。

让学生回忆用不完全归纳法得到等差数列的通项公式的过程然后类比等比数列的通项公式

注意:

1、公比q是任意一个常数,不仅可以是正数也可以是负数。

2、当首项等于0时,数列都是0。当公比为0时,数列也都是0。

所以首项和公比都不可以是0。

3、当公比q=1时,数列是怎么样的,当公比q大于1,公比q小于1时数列是怎么样的?

4、以及等比数列和指数函数的关系

5、是后一项比前一项。

列:1,2,(略)

小结:等比数列的通项公式

三、巩固练习:

1、教材P59练习1,2,3,题

2、作业:P60习题1,4

三年级周长课件5篇


一般情况下,教师会提前准备好教案和课件,以便更好地进行授课。因此,如果想随意潦草地写教案,教师们就应该引起重视了。撰写详尽的教案和课件可以让教师更好地讲解课程内容,那么我们应该从哪些方面来撰写呢?小编精心为您挑选了题为“三年级周长课件”的文章,相信一定能够让您满意。希望这篇文章能够帮助到大家!

三年级周长课件 篇1

教学目标:

1.结合具体情境,探索并掌握正方形周长的计算方法。

2.能够运用正方形的周长计算方法解决实际生活中的简单问题,感受数学在日常生活中的应用。

3.培养学生通过数学实践活动,进行探究性学习的能力。

教学重点:探索正方形周长的计算方法。

教学难点:能用正方形的周长的计算方法解决生活中的简单问题。

教具准备:正方形、实物(地砖)、题单、课件。

学具准备:实物(地砖)、尺子。

教学过程:

一、复习旧知。

1.师:同学们,前两天大家已经初步认识了图形的周长,那谁能用一句话告诉老师,什么是周长?怎样求图形的周长?

2.出示正方形。

师:请说出图形的名称。

正方形的特点是什么?

如果要计算正方形的周长,需要测量它的哪些边的数据?

师:真是一群能干的孩子,那现在林老师遇到了一些问题,你们愿意用你们学到的这些本领来帮助林老师,做一个能干、又有爱心的孩子吗?

二、创设情境,教学新知。

1.谈话引入新课

师:同学们,老师有一个非常可爱的小女儿,名叫丫丫,就快满五岁了,和你们一样,她非常非常渴望拥有一间属于自己的漂亮房间,所以呢,我按照装修师父的要求买了一些材料,需要同学们来帮助老师测量和计算一些数据,你们可以吗?

2.教学正方形周长的计算方法。

A.展示实物(地砖),请生观察其形状。(板书:地砖的)

B.学生分组测量地砖边长数据,(提示:测量是尽可能的取整厘米数。)并用至少两种不同的方法计算出地砖的周长。抽生说算理,师板书。

方法一:10+10+10+10=40(厘米)

方法二:102+102=40(厘米)

方法三:104=40(厘米)

C.全班讨论:你觉得那种方法最好记忆,最简便?为什么?

如果正方形的边长是20厘米、30厘米、40厘米呢?

由此得出:(板书)

正方形周长的计算=边长4

生齐读公式两遍,并在题单上默写。

师:边长代表什么?4代表什么?

师:要求正方形的周长,必须知道什么?知道正方形的边长,就可以求出什么?

三、练习。

1、基础练习。

判断题:

(1)正方形的周长等于它的边长的4倍。

(2)两个正方形的边长相等,周长也相等。

(3)边长5厘米的正方形,周长是25厘米。

(4)一个正方形的周长是24米,边长是6米。

2、数学与生活:

丫丫的一张正方形照片,边长30厘米,要给这张照片做一个边框,边框有多长?

丫丫的正方形窗帘,边长为100厘米,给三边做漂亮的花边,需要多长的花边?如果做两层呢?

3、实践活动:

(1)学生分组用2个地砖拼大的长方形。

(2)计算其周长。

(3)请生说说想法。

(4)与原来两块地砖的周长相比,拼成的长方形的周长发生了怎样的变化?

三年级周长课件 篇2

一、教材分析

本节课选自人教版小学数学第五册第四单元《四边形》认识部分中的第5课时。这一课时是在学生研究平面图形、长度单位和初步感知了什么是物体的周长及掌握了各种平面图形的周长计算方法的基础上,进行教学的。

这一课之前,教材安排了让学生去测量课桌、黑板、树干的周径、圆形花圃、篮球场等不同形状的物体的边长,并要求计算出边长的总和是多少,通过大量的感受活动使学生对图形的周长有了较深的感性认识,并具备了测量、比较的理念和动手的能力,在这样的基础上再进一步学习《长方形和正方形的周长计算》,根据教材内容的特点,设定了如下的教学目标:

知识目标:

(1)用不同的方式探索长方形周长的计算方法,总结周长计算公式。

(2)能利用长方形的周长计算公式解决实际生活中有关周长计算的问题。

情感目标:

(1)培养学生清楚表达自己的意见的能力,以及观察,比较和归纳的能力。

(2)培养自主探究,合作交流的良好习惯和能力。

教学重点:让学生通过自主探索、小组合作以及和全班同学的合作交流,总结长方形周长计算公式。

教学难点:总结长方形周长公式

二、教法、学法

教法:针对几何知识教学的特点、以及小学生以形象思维为主、空间观念薄弱的特点,我打算采用创设情境法以及分组讨论、合作学习的形式,并运用多媒体教学课件辅助教学,让学生在观察、感知的基础上,分组讨论、合作学习,老师恰当点拨,适时引导,多媒体课件及时验证结论,激发学生的学习兴趣,调动学生的学习积极性,突出学生的主体性,以学生发展为本,转变学生的学习方式,从而达到培养学生的创新精神和实践能力的目的。

学法:苏霍姆林斯基说:“唤醒人实行自我教育,按照我的深刻信念,乃是一种真正的教育。”在学法指导上,我将充分发挥学生的主体精神,创设时间和空间激发他们主动探索。借鉴杜威“做中学”的思想,让学生动起来,活起来,让学生在观察、测量、实践操作、问题解决等过程中,经历想一想,算一算等活动,努力营造协作互动、自主探究、议论纷纷的课堂教学氛围,将课堂真正还给学生,让学生在自主活动中得以发展。

三、教学过程

(一)创设情境、引入新课

1、复习长方形的特点,为新知的学习做好准备:利用身边的长方形(数学书的封面、课桌面)引导学生复习长方形的特点,变抽象为直观。

2、复习周长:出示学生的生活照,引起学生注意,设疑:老师遇到了一个小麻烦,老师想把这张照片装饰一下,镶上花边,让它变得更加漂亮,花边要多长呢?引出周长,进而复习周长的含义,让学生指出长方形的周长,借助课件演示让学生初步感知:长方形的周长就是四条边之和。

(二)提出问题、确定目标

根据学生的回答顺势提出问题:这节课我们就来研先来研究怎样计算长方形的周长。前面学生在学习周长时已经学会用工具测量出周长了,这里开篇点题,让学生明确学习目标:计算。

(三)实践探究、获取新知

1、讨论算法:通过设问,让学生明确知道了长和宽就能计算出长方形的周长即先量后算。

2、出示长方形的长和宽的长度,小组合作研究长方形的周长的计算。

①向学生说明活动要求。

②学生分组交流想法,然后在自学本上写出自己的算法,能写几种就写几种。

学生小组活动,教师巡视指导。

③交流算法。

(1)各小组派一名代表说算式(师板书算式),小组间互相补充。

(2)全班交流算法,课件演示,归纳算法。

(3)小结要算长方形的周长必须要知道它的长和宽。

由于学生对长方形周长计算方法非常多,所以在课堂上让学生在各抒己见的基础上,形成一个热烈、民主、交流的学习氛围,老师在“放”的同时又要注意“收”。

(四)应用新知,达成目标

1、出示一个长6厘米,宽2厘米的长方形。学生用喜欢的方法计算。

①一人上台板演,其余的在本上列式计算。

②集体订正,优化计算方法。(让学生经过体验后更能体会哪种方法更好)

2、出示两只兔子在赛跑的情境图,(正方形边长4厘米,长方形长为5厘米,宽为3厘米).

①让学生猜猜看哪个长方形的周长更长。

②验证猜想。(分男、女生组比赛计算周长)

③引导发现:正方形的周长计算方法。周长一定时,它的长和宽是不相同的。

积极为学生创设主动学习的机会,提供尝试探索的空间,使学生乐于、善于自主学习,能主动从不同方面,不同角度思考问题,寻求解决问题的途径。

3、学生作业:第42页及43页做一做第1题。

从图形题上升到文字题

由于长方形是一种空间图形,用文字来表述题意,是要学生从题意中转换为图形,从而训练了学生的空间思维能力。

4、选作:第42题做一做第2题

(五)回顾小结,教师评价

通过今天的学习,有哪些收获?有什么感受?

让学生谈一谈这节课的收获,培养学生的小结能力。

附:板书设计

长方形和正方形的周长

6+6+4+4=20(厘米)6+4+6+4=20(厘米)正方形的周长=边长×4

6×2+4×2=20(厘米)(6+4)×2=20(厘米

长方形的周长=长×2+宽×2长方形周长=(长+宽)×2

三年级周长课件 篇3

教材分析:

本节课的内容是苏教版教材三年级(上册)《周长是多少》。这是一次实践活动。教材设计了用线围一围、用小棒摆一摆、用小正方形计算相应的周长、以及量一量、估一估等丰富的活动,旨在通过活动,巩固对长方形、正方形的特征以及周长的含义和计算方法的认识,同时在发现和解决问题的过程中,培养和发展学生的数学思考以及合作交流能力。

学生分析:

本课时的教学是在学生已经认识了长方形和正方形的特征,已经掌握了周长的意义和计算方法的基础上教学教学,本节课的内容旨在让学生通过动手操作动脑思考,相互交流,可以进一步明确周长的含义,并有创意地解决实际问题,同时通过小组交流的形式,发展学生的空间观念和口头表达能力,并使学生熟练灵活地掌握计算长方形和正方形的`周长的方法。

教学目标:

1、通过实践加深对周长含义的认识,增强计算长方形、正方形等平面图形周长的能力。

2、在实践活动中坦步提高动手操作水平,发展数学思考,培养创新意识和学习数学的积极情感。

教学重点:

通过实践加深对周长含义的认识,增强计算长方形、正方形等平面图形周长的能力。

教学难点:

在实践活动中坦步提高动手操作水平,发展数学思考,培养创新意识和学习数学的积极情感。

教学准备:

课件

教学过程:

一、创设情境,激趣导入。

这节课,老师给大家带来了一份礼物,你们想知道是什么吗?

只要今天能获得三颗星的小朋友就可以看到老师奖励的礼物了。

你们每个人面前都有一个信封。请你打开,看一看,里面有哪些学具?你能告诉老师吗?

今天,老师和大家一起用这些学具来研究一些平面图形的周长。

板书课题:周长是多少

二、操作实践,解决问题。

(一)围一围。(多媒体出示课本上的插图)

1、师:看,图中的小朋友们正在围着自己喜欢的图形呢!

(钥匙、松树、五角星、三角形)

2、师:你能用一根丝线围出你喜欢的图形吗?请大家拿出信封里的线围一围。

要求

(1)要把老师给你的线都用完。

(2)把你围好的图形形状填在作业纸第一张表格里。

(3)学生操作,教师指导。

3、师:说一说,你围的是什么图形。

展示学生的作品。同学们用线围成的图形真好看。

4、师:用手指一指你围成的图形的周长好吗?

想一想,围成的图形周长是多少?怎样量最方便?

(把线拉直,用尺量一量)

学生围图形、量周长、填表格,在小组内交流。

5、评价:完成老师要求的小朋友可以在评价表里贴好第一颗星。

设计说明让每个学生自己动手操作,用线围出美丽的图形。进一步明确周长的含义,并有创意地解决实际问题。

(二)摆一摆。(多媒体出示课本上的插图)

1、师:图上的小朋友在干什么?

2、师:请你拿出信封里的小棒。

量一量:4根短的长度是多少厘米?4根长的长度是多少厘米?

3、师:你打算用几根小棒,怎样摆成正方形或长方形呢?

先想一想,想好了再摆一摆。

把你围好的结果填在作业纸第二张表格里。

交流:我摆的是长方形,它的长是( )厘米,宽是( )厘米,周长是( )厘米。

我摆的正方形,它的边长是( )厘米,周长是( )厘米。

4、互相评价:同桌两人交流、评价。为成功的小朋友在评价表里画上第二颗星。

设计说明给学生足够的时间操作学具,独立地摆出自己想象的长方形和正方形,发展学生的空间观念和口头表达能力。

(三)估一估。

同学们的表现真不错,我们一起用纸头来玩游戏吧。

老师帮我们每人准备了一张小纸片(长:10厘米,宽:6厘米),你能从这张纸上看出有哪些数学问题,并提问出来让其他同学来回答吗?

生:这是什么图形的纸?回答:长方形的。

生:长方形有什么特点?回答:有4条边、对边相等;有4个角,都是直角。

(生评价同学回答的问题)

生:它的周长是多少?回答:长大约~厘米,宽大约~厘米,周长大约是30厘米。

师:要确切知道这张纸的周长,怎么办?(量一量)

请大家测量一下这个长方形,并汇报你是怎么量的,看看这个长方形的周长是多少?(学生动手测量长方形的周长)

学生汇报结果及方法。

(1)102+62=32

(2)10+6=16 162=32

设计说明学生作为学习的主人自己提出问题,请同学回答,评价同学的回答。给他们留出了广阔的思维空间,让他们在提问、猜测、评价、验证中体验成功的喜悦

(四)剪一剪。

师:如果老师让你在这张长方形纸上剪下一个最大的正方形,你知道这个正方形的边长是多少?

(边长是6厘米。边长就是原来长方形的宽。)

师:对,在长方形里剪一个最大的正方形,长方形的宽其实就是这个最大正方形的边长。(板书:宽是正方形的边长)

师:下面请大家动手折一折,把这个正方形剪下来,注意不要剪歪了。

学生动手剪正方形。

师:你会计算这个正方形的周长吗?(64=24厘米)

师:你能再把这个正方形剪成两个完全相同的长方形吗?

学生动手剪。

师:现在,每个小长方形的周长是多少呢?你是怎么算出来的?

方法一:46=24(厘米) 242=12(厘米) 12+6=18(厘米)

方法二:62=3(厘米) 3+6=9(厘米) 92=18(厘米)

方法三:移一移,63=18(厘米)

小结:大家刚才想出了几种方法,这说明解决问题的途径很多,只要我们换一个角度去思考,就会有新的发现。

设计说明增加的剪一剪的内容,充分让学生在折、剪中体会长方形和正方形的联系和区别,掌握它们的特征,熟练周长的计算。让学生体会从不同的角度来思考解决问题的方法。

(五)拼一拼。(多媒体出示课本上的插图)

1、看一看,你们的桌子上还有什么学具我们没用呢?

师:读要求:用12个边长是1厘米的正方形拼成一个长方形。

拿出12个边长是1厘米的小正方形。

先想一想,商量一下怎样拼,小组合作,小组长记录填表格。

2、小组交流。(课件出示)

一排摆几个?摆几排?长是多少?宽是多少?周长是多少?

3、师:请你观察一下这些数据,说说你有什么发现?

4、师:都是由十二个小正方形组成的,周长怎么会不一样呢?

5、师:在我们拼出的3种长方形里,它们的周长哪个最长,哪个最短?

提问:你发现了什么规律?

(排出的图形越长,它的周长越长,排出的图形越方,它的周长越短。)

设计说明:小组合作拼一拼,培养学生协作解题的能力。让学生在拼图形和计算的过程中进一步理解周长的含义,在观察、比较、找规律的过程中,发展数学思考能力。

三年级周长课件 篇4

教学内容

义务教育教科书三年级上册,第85页的内容。

教材分析

本课的教学是在学生建立了周长的概念以后,着重研究两类规则图形——长方形和正方形的周长计算的问题。

学生分析

在前面的学习中,学生对周长的含义已经有了一定的认识和理解,在自己的头脑中对“封闭图形一周的长度”也建立了相应的概念,这就为本课的学习奠定了非常重要的认知基础,本课教学内容的知识生长点也就在此处。

教学目标

1、通过教学,使学生理解长方形、正方形周长的计算方法,掌握计算公式,培养学生抽象概括的能力。

2、使学生熟练掌握长方形、正方形的周长的计算方法,并能运用所学知识解决生活中的实际问题。

3、通过合作学习,培养学生积极参与数学学习活动,对数学有好奇心和求知欲。

教学重点、难点

1、探索并掌握长方形和正方形周长的计算方法。

2、正确计算长方形和正方形的周长。

教学流程

一、激趣设疑

同学们都听过龟兔赛跑的故事吧!自从兔子失败之后,它一直很不服气,就想找个机会证明自己的实力,这一天,在遥远的森林里,动物们又举行了一次龟兔赛跑。

比赛马上就要开始了,裁判员猴哥宣布比赛路线。说:“请运动员小兔沿第一块草坪跑一圈,运动员乌龟沿第二块草坪跑一圈。”小兔一看着急地说:“不公平!不公平!我跑的路程比乌龟的长!”

师:到底小兔跑的路程是不是比乌龟的长呢?咱们一起看一看。(出示多媒体课件)

你有办法判断出谁跑的路程长吗?

预设:

生1:有,可以量一量。生2:算一算他们的周长……

师:他们的周长应该怎样计算呢?这节课我们就来研究长方形和正方形周长的计算。板书课题《长方形和正方形周长的计算》

二、小组合作,解决问题。

1、探索长方形周长的计算公式

师:兔子的路线有什么特点?(长方形)

长方形的特征是什么呢?(对边相等,四个角都是直角。)

乌龟的路线有什么特点?(是正方形)

正方形有什么特点?(四条边相等,四个角都是直角。)

怎么算长方形和正方形的周长呢?

请同学们拿出你们准备好的长方形或正方形卡片,小组合作,想一想、量一量、算一算长方形或正方形的周长应该怎样计算?你们小组能想出几种计算方法?你认为哪种计算方法更好?(注意在讨论之前要先选好记录员、测量员和监督员和汇报员。)

(1)生合作解决以上问题

(2)小组汇报解决方法,师板书并归纳出长方形、正方形周长的计算公式。

师:好,哪组先来汇报一下你们小组讨论的结果。

预设:

生1:我们小组讨论的是长方形卡片的周长的计算。我们先量出这个长方形卡片的长是6厘米,宽是4厘米,因为长方形有两个长边和两个宽边,所以这个长方形卡片的周长是:6×2+4×2=20(厘米)。(师板书)

师:哪个小组计算的这个长方形卡片的周长的方法和他们小组的方法和结果都一样?

师:哪个小组计算的长方形卡片的周长的方法和他们不一样?

生2:6+6+4+4=20(师板书)

生3:(6+4)×2=20(师板书)

师:哪个小组讨论的是正方形卡片的周长,汇报一下你们的结果?

预设:

生4:我们小组讨论的是正方形卡片的周长的计算。我们先量出正方形卡片的一条边长是5,根据正方形的特点,用5+5+5+5=20(厘米)。

生5:5×4=20

师:通过上面的讨论,我们发现求长方形卡片的周长有这么多的方法,那么现在谁能来总结一下一般长方形周长的计算方法呢?

预设:

生:长+宽+长+宽=周长宽+宽+长+长=周长

宽×2+长×2=周长(长+宽)×2=周长

(随着学生的汇报,师板书)

师:有这么多方法来计算长方形的周长,每一种方法都很棒,在今后的计算中你喜欢哪种方法就用哪种方法。那你觉得哪种方法更简单呢?

引出:长方形的周长=(长+宽)×2

这就是长方形周长的计算公式。(齐读2遍)

师:长方形周长的计算公式我们总结出来了,下面小组讨论一下正方形的计算公式?

生:正方形的周长=边长×4(齐读2遍)

师:知道了长方形和正方形周长的计算公式,下面我们一起来计算一下兔子和乌龟赛跑的路程吧?

2、比较他俩的路程的长短,得出结论:他们跑的路程一样长。

师:开始小兔子说“比赛不公平”,它这种没有经过计算就下结论的做法对不对?这时小兔子会怎么做?

师:是呀,小兔子知错就改,真棒!希望我们也能像小兔那样做一个知错就改的好学生。

三、巩固深化,联系生活,解决实际问题

师:在这次比赛中,兔子吸取了以往的教训,一心一意的和乌龟比赛,最终取得了胜利。在裁判员猴哥宣布比赛结果的时候,乌龟又不服气了,说:“跑得快算什么,我们一起来比比智力吧!”同学们,你们愿意和他们一起比赛吗?(愿意)好,那我们就一起来看看比赛题目吧!

1、小小判官。(课件出示)

(1)长方的周长=长+宽×2。()

(2)正方形的周长是它边长的4倍。()

(3)长方形的周长一定比正方形的周长长。()

(4)一个长方形的长是5米,宽是4厘米,这个长方形的周长是70米。()

(5)用边长相等的两个正方形拼成一个长方形,这个长方形的周长一定是其中一个正方形周长的2倍。()

2、求下面图形的周长。(课件出示)

3、量一量,算一算。

测量并计算课本封面的周长。(学生测量、计算。)

4、拼一拼,算一算。

两人一组,把两块长10厘米、宽5厘米的长方形纸板拼起来,算一算所拼图形的周长。

5、分一分。把一个正方形分成两个相等的长方形,求出每个长方形的周长。(课件出示)

四、课堂总结。

师:和我们一样,这时候兔子和乌龟的智力比赛也结束了,在比赛中,乌龟取得了胜利。兔子跑得快,乌龟更聪明,兔子和乌龟各有所长,我们用掌声为它们祝贺!其实每个人也都各有所长,我们应该互相学习,对不对?

兔子和乌龟的比赛结束了,我们这节课也要接近尾声了,请同学们想想:本节课你都学到了什么?你有什么收获?你能用简短的话告诉大家吗?

五、课后延伸,解决实际问题。

师:这节课,同学们的收获真不少,课下请同学们:

1、寻找生活中哪些地方用到周长的知识?

2、小组为单位,搜集数据计算教室门、窗、课桌、凳子面的周长。

六、板书设计:

长方形、正方形周长的计算

长方形的周长=(长+宽)×2

正方形的周长=边长×4

三年级周长课件 篇5

一、教材分析:

本节课是小学数学苏教版国标本三年级的教材。这局部教材是在同学认识了周长和长方形、正方形的特征的基础上教学长方形、正方形周长的计算。我从同学熟悉的故事情景境引入,提出问题,为同学创设探究学习的情景,吸引同学探索的欲望,引导同学在合作、探索、交流中学习新知。

二、教学目标:

根据本课的具体情况,考虑到同学已有的认知结构和心理特征,我制订如下教学目标:

1、有条理地总结出长方形和正方形周长的计算公式。

2、培养同学观察、推理、分析、综合、笼统、概括的能力和解决简单的实际问题的能力。

3、通过长方形和正方形周长计算公式的推导过程,培养同学的探索精神和合作精神。

三、教学重点、难点、关键点:

本着课程规范,我在认识了本节课教材在整个知识结构中所处的地位,考虑同学认知情况的基础上,我确立了如下教学重点、难点、关键点。

教学重点:推导、归纳长方形和正方形周长的计算公式。

教学难点:理解并掌握长方形、正方形周长的计算方法。

教学关键点:让同学在自身的计算和解决问题的过程中体会和理解算法。

四、教学方法:

依据同学的认知规律,我在本节课的教学方法中力求体现以下几个方面的理念:

1、从同学爱听的故事动身,为同学创设探究学习的情景;

2、联系生活实际,让同学体会数学与生活的联系;

3、改变同学的学习方式,运用合作学习,培养同学的协作能力;

4、运用电化教学手段增加教学的新颖性,引导同学以多种感官参与学习的全过程。

我主要采用:创设情境引入新课、师生互动研讨新知、引导同学总结、点拨同学迷惑等教学方法。

五、同学的学法:

“同学是学习的主人,教师是学习的组织者、引导者与合作者”,那么,如何体现新课程所提倡的学习方式呢?设计教学时我遵循同学学习数学的心理规律,强调从同学已有的生活经验动身,让同学经历自主探索、合作交流的过程。

通过动手操作、独立考虑和开展小组合作交流的活动,总结规律,完善自身的想法,形成良好的学习方法。

通过联系生活实际解决问题来增加同学对数学的兴趣,并体验数学的乐趣。

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