第一篇:高中英语 unit1《Friendship》教案2 新人教版必修1
Period 3 Learning about language Teaching aims: 1.To discover and learn to use some words and expressions.2.To enable students to rewrite sentences using direct or indirect speech 3.To learn more information about Anne.4.To cultivate the spirit of cooperation, self-teaching and self-exploring.Teaching procedures: Step 1 Revision 1.Review something about “Anne’s best friend” by using some True-or-False sentences 1)A friend would laugh at you.()2)Anne lived in Amsterdam in the Netherlands during World War II.()3)She and her family hid away for one year before they were discovered.()4)She kept a diary as others did.()
5)She was fond of nature.()
6)She stayed awake in the night because she couldn’t sleep well.()7)She couldn’t go out as she liked.()2.Collect the sentences students think wonderful or difficult to understand.Sample sentences 1)She and her family hid away for nearly twenty-five months before they were discovered.2)I wonder if it’s because I haven’t been able to be outdoors for so long that I’ve grown so crazy about everything to do with nature.3)There was a time when a deep blue sky, the song of the birds, moonlight and flowers could never have kept me spellbound.4)The dark, rainy evening ,the wind, the thundering clouds held me entirely in their power.5)It was the first time in a year and a half that I’d seen the night face to face.Step 2 Language points 1.grow crazy about sth.对…狂热,痴迷be crazy about …
eg.My cousin grows crazy about computer games.2.go through 1).To examine carefully 仔细阅读或研究
I went through the students’ papers last night.2).To experience 经历,遭受或忍受
You really don’t know what we went through while working on this project.3.stay
v.to continue to be in a particular state or situatioin 系动词,表是状态。后跟名词或形容词,不能用于被动语态和进行时态。eg.He stayed single all his life.4.make/call + O +Noun(as O.C.)5.hide away
用心
爱心
专心
6.discover
Columbus discovered America in 1492.7.set down: to write down something so that you have a record of it: I want to set down my feelings on paper.Other verbal phrases of “set”
set aside: to keep some money or time for a special purpose set off: to start to go somewhere/ to cause a explosion set out: to start a journey/ to talk about something in an organized way set up: to start an organization/ to build something 8.ourdoors / indoors Don’t stay indoors since the weather is so fine.9.well
They speak well of him.Well done.10 on purpose
I came here on purpose to see you.11 in order to
In order to catch the train , she hurried through her work.12 too much/ much too entirely
For him, this will be an entirely new hobby.14 in one’s power / out of one’s powers 15 it was the first/second time that …
It is the first time that he has been in this city.It was the second time that he had made the same mistakes 16 face to face
I rushed out of the office and found myself face to face with the boss.17.far
adv.“过于;…得多” ,表示程度,经常与too或形容词、副词的比较级连用。
eg.She speaks English far better than I.This room is far too warm.cf.very, much, far 18.dare 1)modal.v.多用于否定句、疑问句、条件状语从句、whether(if)等名词性从句或有否定意义的句中,后接动词原形。没有人称和数的变化,其时态只有现在时和过去时。否定式在其后加not.eg.How dare he say such a word!
If you dare do that again, you’ll be punished.2)vt.敢,胆敢。有人称、数和时态的变化。在否定句和疑问句中,dare后的to可保留也可省略。
eg.I wonder how he dare to day such words.19.happen to do sth.用心
爱心
专心
It so(just)happened that…不能用于进行时态。
eg.I happened to be out when he came.= It so happened that I was out when he came.用心
爱心 专心 3
第二篇:英语:unit1《Friendship》教案2(新人教必修1)(精选)
Period 3 Learning about language Teaching aims: 1.To discover and learn to use some words and expressions.2.To enable students to rewrite sentences using direct or indirect speech 3.To learn more information about Anne.4.To cultivate the spirit of cooperation, self-teaching and self-exploring.Teaching procedures: Step 1 Revision 1.Review something about “Anne’s best friend” by using some True-or-False sentences 1)A friend would laugh at you.()2)Anne lived in Amsterdam in the Netherlands during World War II.()3)She and her family hid away for one year before they were discovered.()4)She kept a diary as others did.()
5)She was fond of nature.()
6)She stayed awake in the night because she couldn’t sleep well.()7)She couldn’t go out as she liked.()2.Collect the sentences students think wonderful or difficult to understand.Sample sentences 1)She and her family hid away for nearly twenty-five months before they were discovered.2)I wonder if it’s because I haven’t been able to be outdoors for so long that I’ve grown so crazy about everything to do with nature.3)There was a time when a deep blue sky, the song of the birds, moonlight and flowers could never have kept me spellbound.4)The dark, rainy evening ,the wind, the thundering clouds held me entirely in their power.5)It was the first time in a year and a half that I’d seen the night face to face.Step 2 Language points 1.grow crazy about sth.对…狂热,痴迷be crazy about …
eg.My cousin grows crazy about computer games.2.go through 1).To examine carefully 仔细阅读或研究
I went through the students’ papers last night.2).To experience 经历,遭受或忍受
You really don’t know what we went through while working on this project.3.stay
v.to continue to be in a particular state or situatioin 系动词,表是状态。后跟名词或形容词,不能用于被动语态和进行时态。eg.He stayed single all his life.4.make/call + O +Noun(as O.C.)5.hide away
6.discover
Columbus discovered America in 1492.7.set down: to write down something so that you have a record of it: I want to set down my feelings on paper.Other verbal phrases of “set”
set aside: to keep some money or time for a special purpose set off: to start to go somewhere/ to cause a explosion set out: to start a journey/ to talk about something in an organized way set up: to start an organization/ to build something 8.ourdoors / indoors Don’t stay indoors since the weather is so fine.9.well
They speak well of him.Well done.10 on purpose
I came here on purpose to see you.11 in order to
In order to catch the train , she hurried through her work.12 too much/ much too entirely
For him, this will be an entirely new hobby.14 in one’s power / out of one’s powers 15 it was the first/second time that …
It is the first time that he has been in this city.It was the second time that he had made the same mistakes 16 face to face
I rushed out of the office and found myself face to face with the boss.17.far
adv.“过于;…得多” ,表示程度,经常与too或形容词、副词的比较级连用。
eg.She speaks English far better than I.This room is far too warm.cf.very, much, far 18.dare 1)modal.v.多用于否定句、疑问句、条件状语从句、whether(if)等名词性从句或有否定意义的句中,后接动词原形。没有人称和数的变化,其时态只有现在时和过去时。否定式在其后加not.eg.How dare he say such a word!
If you dare do that again, you’ll be punished.2)vt.敢,胆敢。有人称、数和时态的变化。在否定句和疑问句中,dare后的to可保留也可省略。
eg.I wonder how he dare to day such words.19.happen to do sth.It so(just)happened that…不能用于进行时态。
eg.I happened to be out when he came.= It so happened that I was out when he came.
第三篇:高中英语必修1、2总目录
总目录: 上册:
01、人教版高中英语必修1《Unit 1 Friendship-part1》特级教师辅导视频名师讲解
02、人教版高中英语必修1《Unit 1 Friendship-part2》特级教师辅导视频名师讲解
03、人教版高中英语必修1《Unit 1 Friendship-part3》特级教师辅导视频名师讲解
04、人教版高中英语必修1《Unit 2 English around the world-part1》特级教师辅导视频
05、人教版高中英语必修1《Unit 2 English around the world-part2》特级教师辅导视频
06、人教版高中英语必修1《Unit 2 English around the world-part3》特级教师辅导视频
07、人教版高中英语必修1《Unit 3 Travel journal-part1》特级教师辅导视频名师讲解
08、人教版高中英语必修1《Unit 3 Travel journal-part2》特级教师辅导视频名师讲解
09、人教版高中英语必修1《Unit 3 Travel journal-part3》特级教师辅导视频名师讲解
10、人教版高中英语必修1《Unit 4 Earthquakes-part1》特级教师辅导视频名师讲解
11、人教版高中英语必修1《Unit 4 Earthquakes-part2》特级教师辅导视频名师讲解
12、人教版高中英语必修1《Unit 4 Earthquakes-part3》特级教师辅导视频名师讲解
13、人教版高中英语必修1《Unit 5 Nelson Mandelaa modern hero-part2》特级教师辅导视频
15、人教版高中英语必修1《Unit 5 Nelson Mandela-a modern hero-part3》特级教师辅导视频
下册:01、人教版高中英语必修2《Unit 1 Cultural relics part1》特级教师辅导视频名师教学
02、人教版高中英语必修2《Unit 1 Cultural relics part2》特级教师辅导视频名师教学
03、人教版高中英语必修2《Unit 1 Cultural relics part3》特级教师辅导视频名师教学
04、人教版高中英语必修2《Unit 2 The Olympic Games part1》特级教师辅导视频名师教学
05、人教版高中英语必修2《Unit 2 The Olympic Games part2》特级教师辅导视频名师教学
06、人教版高中英语必修2《Unit 2 The Olympic Games part3》特级教师辅导视频名师教学
07、人教版高中英语必修2《Unit 3 Computers part1》特级教师辅导视频名师教学
08、人教版高中英语必修2《Unit 3 Computers part2》特级教师辅导视频名师教学
09、人教版高中英语必修2《Unit 3 Computers part3》特级教师辅导视频名师教学
10、人教版高中英语必修2《Unit 4 Wildlife protection part1》特级教师辅导视频名师教学
11、人教版高中英语必修2《Unit 4 Wildlife protection part2》特级教师辅导视频名师教学
12、人教版高中英语必修2《Unit 4 Wildlife protection part3》特级教师辅导视频名师教学
13、人教版高中英语必修2《Unit 5 Music part1》特级教师辅导视频名师教学
14、人教版高中英语必修2《Unit 5 Music part2》特级教师辅导视频名师教学
15、人教版高中英语必修2《Unit 5 Music part3》特级教师辅导视频名师教学
第四篇:17_《牛顿第二定律》教案(新人教必修1)
牛顿第二定律
教学目标:
一、知识目标
1.理解加速度与力和质量的关系;
2.理解牛顿第二定律的内容,知道定律的确切含义;
3.知道得到牛顿第二定律的实验过程。
二、能力目标
培养学生的实验能力、分析能力和解决问题的能力。
三、德育目标
使学生知道物理中的一种研究问题的方法——控制变量法
教学重点
1.牛顿第二定律的实验过程;
2.牛顿第二定律。
教学难点
牛顿第二定律的意义。
教学方法
实验法、讲授法、归纳法
教学用具
两辆质量相同的小车,光滑的水平板(一端带有定滑轮);砝码(一盒),细绳、夹子 课时安排 2课时
教学过程
一、导入新课
1.提问:什么是物体运动状态的改变?物体运动状态发生改变的原因是什么?
2.引入新课:
通过上节课的学习,我们已知道:物体运动状态改变时产生加速度,而产生的加速度又和物体的质量及所受力的大小有关,那么:加速度跟物体所受力的大小及物体质量之间有什么关系呢?本节课我们就来研究这个问题。
二、新课教学
(一)用投影片出示本节课的学习目标:
1.理解加速度与力的关系;
2.理解加速度与质量的关系
3.理解牛顿第二定律的内容。
(二)学习目标完成过程:
1、加速度和力的关系:
(1)用投影片出示本节课所用的实验装置,教师进行讲解:图中是两辆质量相同的小车,放在光滑的水平板上,小车的前端各系上细绳,绳的另一端跨过定滑轮各挂一个小盘,盘里放有数量不等的砝码,使两辆小车在不同的拉力下做匀加速运动。
(2)对本次实验中说明的两个问题
a:砝码跟小车相比质量较小,细绳对小车的拉力近似地等于砝码所受的重力。
b:用一只夹子夹住两根细绳,以同时控控制两辆小车。
(3)实验的做法:
a:在两砝码盘中放不同数量的砝码,以使两小车所受的拉力不同。
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b:打开夹子,让两辆小车同时从静止开始运动,一段时间后关上夹子,让它们同时停下来。
(4)需观察的现象,观察两辆车在相等的时间里,所发生的位移的大小。(实验现象:所受拉力大的那辆小车,位移大)
(5)分析推理:
a:由公式s1at2得到在时间t一定时,位移s和加速度a成正比;
2b:由实验现象得到:小车的位移与他们所受的拉力成正比。
c:推理得到结论:对质量相同的物体,物体的加速度跟作用在物体上的力成正比,即:
a1F1或aF a2F2a1F1a2F2
(6)巩固练习:
a.据得到:要使物体在短时间内速度的改变很大,即加速度很大,就必须给物体提供。
b.竞赛用的小汽车,要求起动后几秒钟内速度由零达到60m/s以上,他们为什么要装备功率很大的发动机?
2:加速度和质量的关系:
(1)实验装置同上;
(2)说明与前次实验的不同。
前一次实验中,我们是保持小车质量不变,而改变小车所受力的大小,来研究加速度和力之间的关系的。
本次实验是使两辆小车所受拉力相同,而在一辆小车上加放砝码的,以增大质量,研究加速度和质量之间关系的。
(3)实验现象:
在相同的时间里,质量小的那辆小车的位移大。
(4)分析推理,得到结论:
在相同的力作用下,物体的加速度跟物体的质量成反比,即
a1/a2=m2/m1或a∝m3:牛顿第二运动定律
(1)综合上述实验中得到的两个关系,得到下述结论:
物体的加速度跟作用力成正比,跟物体的质量成反比,且加速度的方向跟引起这个加速度的力的方向相同。
(2)公式表示:
a∝F或者F∝ma m即:F=kma
a:如果每个物理量都采用国际单位,k=1;
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b:力的单位(牛顿)的定义:使质量为1千克的物体产生1m/s2的加速度的力叫做1牛顿。
(3)推广:上面我们研究的是物体受到一个力作用的情况,当物体受到几个力作用时,上述关系可推广为:
物体的加速度跟所受的合力成正比,跟物体的质量成反比,加速度的放心跟合力的方向相同。即F合=ma。
(4)介绍F合和a的瞬时对应关系
a:只有物体受到力的作用,物体才具有加速度。
b:力恒定不变,加速度也恒定不变。
c:力随着时间改变,加速度也随着时间改变。
d:力停止作用,加速度也随即消失。
4:例题分析(课本例题)
(1)学生阅读例题内容
(2)分析:
质量m已知必须先求F1和F2的合力,而合力的大小可
要求物体的加速度以用作图法求解,也可以用计算法求解。
(3)用投影片展示解题过程:
如图所示,建立平面直角坐标系,把力F1和F2分别沿x轴和y轴的方向分解F1的两个分力为:
F1xF1xcos60o,F2yF2sin60o
F2的两个分力为:F2xoF2cos60o,F2yF2sin60
F1y和F2y大小相等,方向相反,相互抵消,F1x和F2x的方向相同,所以:
F合F1xF2xF1cos60oF2cos60o5N5N10N
已知合力F合和质量m,据F合=ma,即可求得:
10NaF合5m/s2
2kg
三:小结
1:本节课的研究方法——控制变量法
2:牛顿第二运动定律确定了a和F之间的大小关系,也确定的a和F的方向关系
3:求解合力时,可采用建立平面直角坐标系,将各个力沿x轴和y轴分解,最后求合力的方法。
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四、作业
课本P53练习二
五、板书设计:
定律的实验条件(控制变量法)
1、m一定时,aF1
2、F一定时,am
3、把Fma改写成,在F,m,a取国际单位的条件下k1牛顿第二定律内容:物体运动的加速度与合外力成正比,与质量成反比,且加速度与合外力方向相同F合和a的方向关系1N1kgm/s2单位关系:物理意义:瞬时对应关系因果对应关系
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第五篇:高中数学《指数函数》教案1 新人教A版必修1
3.1.2指数函数
(二)教学目标:巩固指数函数的概念和性质 教学重点:指数函数的概念和性质 教学过程:
本节课为习题课,可分以下几个方面加以练习: 备选题如下:
1、关于定义域
x(1)求函数f(x)=11的定义域
9(2)求函数y=1x的定义域
51x1(3)函数f(x)=3-x-1的定义域、值域是……()
A.定义域是R,值域是R
B.定义域是R,值域是(0,+∞) C.定义域是R,值域是(-1,+∞) D.以上都不对(4)函数y=1x的定义域是______ 5x11(5)求函数y=ax1的定义域(其中a>0且a≠1)
2、关于值域
(1)当x∈[-2,0]时,函数y=3x+1-2的值域是______(2)求函数y=4x+2x+1+1的值域.(3)已知函数y=4x-3·2x+3的值域为[7,43],试确定x的取值范围.(4).函数y=3x3x1的值域是() A.(0,+∞)
B.(-∞,1) C.(0,1)
D.(1,+∞)
(5)函数y=0.25x22x12的值域是______,单调递增区间是______.3、关于图像
用心 爱心 专心 1
(1)要得到函数y=8·2-x的图象,只需将函数y=(12)x的图象()
A.向右平移3个单位
B.向左平移3个单位 C.向右平移8个单位
D.向左平移8个单位
(2)函数y=|2x-2|的图象是()
(3)当a≠0时,函数y=ax+b和y=bax的图象只可能是()