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新人教版高中英语必修2Unit 4 History and TraditionsDiscovering Useful Structure教案一

  • 人教版高中数学选修3排列与排列数教学设计

    人教版高中数学选修3排列与排列数教学设计

    4.有8种不同的菜种,任选4种种在不同土质的4块地里,有 种不同的种法. 解析:将4块不同土质的地看作4个不同的位置,从8种不同的菜种中任选4种种在4块不同土质的地里,则本题即为从8个不同元素中任选4个元素的排列问题,所以不同的种法共有A_8^4 =8×7×6×5=1 680(种).答案:1 6805.用1、2、3、4、5、6、7这7个数字组成没有重复数字的四位数.(1)这些四位数中偶数有多少个?能被5整除的有多少个?(2)这些四位数中大于6 500的有多少个?解:(1)偶数的个位数只能是2、4、6,有A_3^1种排法,其他位上有A_6^3种排法,由分步乘法计数原理,知共有四位偶数A_3^1·A_6^3=360(个);能被5整除的数个位必须是5,故有A_6^3=120(个).(2)最高位上是7时大于6 500,有A_6^3种,最高位上是6时,百位上只能是7或5,故有2×A_5^2种.由分类加法计数原理知,这些四位数中大于6 500的共有A_6^3+2×A_5^2=160(个).

  • 人教版高中数学选修3全概率公式教学设计

    人教版高中数学选修3全概率公式教学设计

    2.某小组有20名射手,其中1,2,3,4级射手分别为2,6,9,3名.又若选1,2,3,4级射手参加比赛,则在比赛中射中目标的概率分别为0.85,0.64,0.45,0.32,今随机选一人参加比赛,则该小组比赛中射中目标的概率为________. 【解析】设B表示“该小组比赛中射中目标”,Ai(i=1,2,3,4)表示“选i级射手参加比赛”,则P(B)= P(Ai)P(B|Ai)= 2/20×0.85+ 6/20 ×0.64+ 9/20×0.45+ 3/20×0.32=0.527 5.答案:0.527 53.两批相同的产品各有12件和10件,每批产品中各有1件废品,现在先从第1批产品中任取1件放入第2批中,然后从第2批中任取1件,则取到废品的概率为________. 【解析】设A表示“取到废品”,B表示“从第1批中取到废品”,有P(B)= 112,P(A|B)= 2/11 ,P(A| )= 1/11所以P(A)=P(B)P(A|B)+P( )P(A| )4.有一批同一型号的产品,已知其中由一厂生产的占 30%, 二厂生产的占 50% , 三厂生产的占 20%, 又知这三个厂的产品次品率分别为2% , 1%, 1%,问从这批产品中任取一件是次品的概率是多少?

  • 人教版高中数学选修3条件概率教学设计

    人教版高中数学选修3条件概率教学设计

    (2)方法一:第一次取到一件不合格品,还剩下99件产品,其中有4件不合格品,95件合格品,于是第二次又取到不合格品的概率为4/99,由于这是一个条件概率,所以P(B|A)=4/99.方法二:根据条件概率的定义,先求出事件A,B同时发生的概率P(AB)=(C_5^2)/(C_100^2 )=1/495,所以P(B|A)=(P"(" AB")" )/(P"(" A")" )=(1/495)/(5/100)=4/99.6.在某次考试中,要从20道题中随机地抽出6道题,若考生至少答对其中的4道题即可通过;若至少答对其中5道题就获得优秀.已知某考生能答对其中10道题,并且知道他在这次考试中已经通过,求他获得优秀成绩的概率.解:设事件A为“该考生6道题全答对”,事件B为“该考生答对了其中5道题而另一道答错”,事件C为“该考生答对了其中4道题而另2道题答错”,事件D为“该考生在这次考试中通过”,事件E为“该考生在这次考试中获得优秀”,则A,B,C两两互斥,且D=A∪B∪C,E=A∪B,由古典概型的概率公式及加法公式可知P(D)=P(A∪B∪C)=P(A)+P(B)+P(C)=(C_10^6)/(C_20^6 )+(C_10^5 C_10^1)/(C_20^6 )+(C_10^4 C_10^2)/(C_20^6 )=(12" " 180)/(C_20^6 ),P(E|D)=P(A∪B|D)=P(A|D)+P(B|D)=(P"(" A")" )/(P"(" D")" )+(P"(" B")" )/(P"(" D")" )=(210/(C_20^6 ))/((12" " 180)/(C_20^6 ))+((2" " 520)/(C_20^6 ))/((12" " 180)/(C_20^6 ))=13/58,即所求概率为13/58.

  • 幼儿园小班英语教案:Rabbit

    幼儿园小班英语教案:Rabbit

    二、活动准备 录音、玩具绒兔、小兔头饰若干、大灰狼头饰一个 三、活动过程 1.导入课题,安定情绪。(做律动) (Now, children, please do after me) Hand hand, shake shake shake; Shouldrer shouldrer, shake shake shake; Hip Hip, shake shake shake2.主体部分 师生问好。 T: Hello, boys and girls. C: Hello, Miss Fu. 3.导入新词 T: Now, Listen carefully. I have red eyes, I have short tail, I have long ears, I have carrot. What am I?T: Can you guess it? C: 小兔 T: Yes, you are clever(师出示玩具绒兔)小白兔有个好听的英文名字叫“rabbit”,follow me please(幼儿集体念)

  • 大班英语教案:“sing dance paly”

    大班英语教案:“sing dance paly”

    2、能听懂并会说基本句型:let’s sing. let’s dance .let’s paly 。 3、培养口语表达能力,提高学习英语的兴趣。 活动准备: 教学挂图、卡片、小鸟、小熊的头饰等 活动过程: 一、 日常对话: 1、t: good morning , children! c: good morning , teacher ! 2、sing the song “goodmorning!” 3、t: how are you ,today? c: fine, thank you . how are you ? t: i’m fine , too . 二、 复习旧知: 1、t: last week , we havelearnt something in our schoolbag . now , let’s say them again , ok ? (教师卡片出示学过的学习用品,请幼儿认读) 2、教师出示某一种学习用品,用“do you have a …?”问幼儿,请幼儿用“yes , i do . 和 no , i don’t.”来回答。

  • 大班英语教案:run、play football 、jump rope

    大班英语教案:run、play football 、jump rope

    二.活动准备: 足球一个,绳子一条,跑步动作的图片。 三.活动过程 1、greeting t: hello,good morning,boys and girls! c: hello,good morning,mi su 2, to learn (1)t:what’s do you see? c:足球。(教师出示足球) t:yes, football.read afterme,please. c: football, football, football tk.do you like football? c:yes. tk,let’s plaly football.(做踢足球的动作) c: plaly football. plaly football. plaly football.

  • 大班英语教案:This little pig went to the market

    大班英语教案:This little pig went to the market

    流程: 一、引出儿歌 1、Warm up: 歌曲< To market> 2、(教师出示儿歌背景图片)T: I bring a picturetoday. What do you see? (鼓励幼儿大胆说说图片上的内容。) C:I see a happy pig./ I see a market./ Isee a house and a sleepy pig. 二、理解学习儿歌 1、T:What happened to these little pigs?Let’s listen to the rhyme together! (播放CD)欣赏儿歌第一遍 T:What did you get from the rhyme?

  • 大班英语教案:lion’s birthday

    大班英语教案:lion’s birthday

    场景一:门铃响了,狮子去开门。 l: who? r: i’m ra it. l: good morning, ra its. r: good morning, lion. how are you? l: i’m fine, thank you. come in please. r: thank you. r: ha y birthday. (把礼物给狮子)here you are. we hope youlike. l: thank you. sit down please. please, please(拿出一些吃的请小兔子们吃) r: thank you. teddy bear : hello, everyone. i’m teddy bear.today is lion’s birthday. we prepared a present for him. let’s go lion’shome. (song: teddy bear, teddy bear, walk, walk, walk. teddy bear,teddy bear, hop, hop, hop, teddy bear, teddy bear, run, run, run, teddy bear,teddy bear, jump, jump, jump. )

  • 大班英语教案:go shopping

    大班英语教案:go shopping

    二、教学目的与要求1. 能听懂、会说本篇对话; 2. 能运用会话中的句型进行扩展性的情景会话; 3. 能听懂、会说新单词:purple, size, cool。三、教学重点  能运用所学句型进行扩展性的情景会话。四、教学手段  运用多媒体辅助教学。五、教具准备  一件毛衣,各种文具、食品、服装、玩具和水果等。

  • 大班英语教案These are

    大班英语教案These are

    2、学习These are 句型 教学准备:图片若干,实物若干 教学过程:1、Say good morning 2、T:What day is today? 3、What’s the weather like today? 4、Let’s do a worm up,ok? You have one,I have one Two little children see a big man You have two,I have two Four little children go to school You have three,I have three Six little children plant many trees You have four,I have four Eight little children stand at the door You have five,I have five Ten little children stand in a line

  • 幼儿园小班英语教案:wolf and rabbit

    幼儿园小班英语教案:wolf and rabbit

    2、通过活动,引导幼儿学习新授单词:wolf。 3、 引导幼儿体验英语活动带来的乐趣。 活动准备: 情景创设(森林)、小兔的头饰若干、大灰狼的衣服、磁带 活动过程: (一)情景创设(复习部分动物单词) 出示小兔的头饰,Who is it ? 今天我们就来做rabbit做游戏,(幼儿与教师一起带头饰) Who are you ? We are rabbits. (音乐……):今天我们又要来做游戏了,Are you happy? ( It’s carrot …… go go go ——carrot carrot eat eat eat.It’s grass ……go go go ——grass grass eat eat eat.That’s mushroom …… ——mushroom mushroom eat eat eat(

  • 幼儿园小班英语教案:Cat likes fishing

    幼儿园小班英语教案:Cat likes fishing

    3.初步感知英语歌曲《fish, fish, come here》 课前准备:鱼塘、各种各样的小鱼、鱼桶、鱼杆 小猫的头饰 配乐磁带 活动过程: 1. Introduction the class T:Look, it’s a fine day. Mummy will take you to fishing. Are you ready?happ S:Yes! T:Ok! Let’ go!(Show the big pond with many fish in it.)T:Look, a big pond, there are many fish, you see! Babies, find a gaddi and sit down. Be careful! Don’t crush!(教师先找一块地 垫跪下来,动作幅度大一些。)

  • 小班英语教案 苹果和桔子

    小班英语教案 苹果和桔子

    2、在教师的带领下,让幼儿了解几种水果的英文名称。3、鼓励幼儿能模仿教师说英语。 活动内容:  认识水果apple、orange。由于该内容是幼儿日常生活中比较熟悉的,因此,学习的难度不是很大。在这个活动之前,教师可先复习 “Head andshoulders”这首歌,边唱边做动作,从而让幼儿对五官有进一步的认识和巩固。然后通过教师的引导,认识apple和orange,并且初步理解Yes/No/I like …的含义。其中穿插摘果及品尝水果的游戏活动,让幼儿在快乐中学习。 活动准备:  盒子或小袋子一个,苹果、橘子实物及图片各若干,一幅画有一棵大树的画,刀、碟子、餐纸,磁带、录音机。活动过程:1、热身运动。  教师与幼儿一起欣赏“Head andshoulders”,边听边做动作,以达到课前的活动准备。

  • 幼儿园英语教案Bookbag

    幼儿园英语教案Bookbag

    Teaching aids: colours computer…… Teaching proce : 1.Warming up: song: How is the weather? 2.Daily talk: (1)T:Good moring everyone! C:Good moring teacher! (2) T:Hello! C:Hello! T:How are you! C:Fine , thank you! T:How do you do! C:How do you do! (3) T:Where are you from? C:Hangzhou! (4)T:Nice to see you! C:Nice to see you to! T:Gland to meet you! C:Gland to meet you to! (5) T:What’s your name? C:saly lily…… T:Who is your friend? C:saly lily…… (6) T:What colour do you like? C:I like red\blue\green……

  • 大班英语教案:ZOO FARM

    大班英语教案:ZOO FARM

    2. After you! 班级:大三班人数:33人 时间:2003.10.20 课时:30分钟 教师:朱坤 活动目标:1.理解词语含义,发音准确。 2.喜欢玩游戏,用英语玩角色游戏。 准备:图片、汽车方向盘、售票员。 活动过程: 一.出示图片 1. T: Morning kids. C: Morning 2. T: Today it’s a sunny day? Let’s play together ok? C: Ok! 二.老师带领幼儿一同出去玩。走到图片A处 T: Oh, what’s it? C: panda fox dog…… T: 为什么它们都到这里来了,我们应该把它们送到哪里呢? C: 动物园。 T: Yes zoo. C: Zoo. 老师带领幼儿一起Go to the zoo. T: Ok, This is zoo. Go to the zoo. C: Go to the zoo.

  • 大班英语教案:Words  marker notebook book-bag

    大班英语教案:Words marker notebook book-bag

    2. 了解marker notebook book-bag的中文意思,并能发准其读音。 2. 能大胆、积极的参与英语活动。 Teaching arms : 教学实物(记号笔、软面超、书包)水果教学卡片魔术带一个 Teaching procedures : 一、 Warm up 游戏:Follow me T : Eyes on me , Please. Show me your hands . We’ll play the game “Follow me”. (幼儿跟着老师做动作) 二、To learn 1. Review 出示水果教学卡片,复习句型What is this ? T : Look at me . What is this ? C : A le T : It’s a le. 多次出示水果的卡片,提问:What is this ?复习巩固此句型。

  • 大班英语教案:What do you have

    大班英语教案:What do you have

    1、 学习新句型“what do you have?I have……”并尝试结合以前所学的学习用品的单词来进行表达; 2、 大胆和同伴一起用新句型对话。 Teaching Aids: 每人一个小书包一件小围裙小熊木偶一个 Procedures: I:Warming-up: T:Good morning,boys and girls!We will begin ourcla .Are you ready?(yes!)Let’s sing a song.(Hello song) IIresentation: Tlease close your eyes.One two three.Open youreyes.What’s this?(老师拿出来一只书包) S:It’s a bagpack.

  • 大班英语教案:she is my mother

    大班英语教案:she is my mother

    He is handsome. I love my father.Teaching procedures:A: Revision1. Singing: Hello, How are you? Ilike coffee Teddy Bear2. A chant: grandfather, grandfather, old, grandmother, grandmother, healthy, father, father, handsome, mother, mother, pretty, uncle, uncle, fat, auntie, auntie, slim, sister, sister, smart, brother, brother, naughty, Iam lovely.

  • 大班英语教案:Where are you

    大班英语教案:Where are you

    2.通过英语游戏提高幼儿对英语学习的兴趣。准备:1.圆桌,方桌(各一张)椅子(两把)2.Banana apple cake biscuit cake fish box 3.bag book pencil-box pencil4.cat (头饰)过程:一.出示小猫头饰,引起兴趣。1. Good morning boys andgirls.(Good morning.)2. Who am I ? (cat)3. Yes, I am a cat !AndI am a hungry cat!4. I want to eat somefish .二.寻找小鱼,激发幼儿的积极性。1. Where is it ?Is it on the table ? (No, it isn’t.)What is it ?(It is an apple.)2. Is it under the table?(No, it isn’t.) What is it ? (It is a banana.)3. Is it beside chair?(No, it isn’t.) What is it ? (It is a cake.)

  • 大班英语教案:What's this

    大班英语教案:What's this

    要求:1、能听懂句型“What’s this?”,会用“It’s a……”句型回答问题。 2、复习单词:monky、ra it、cat、dog、panda、elephant、tiger、wolf、bird、fish 3、学习新词:sheep、lion 准备:录音机、磁带、背景图、图片、人手一份动物卡片。 过程:一、Please stand up. Trun back. Let’s say “Good morning,teacher.” There’re many teachers at here,we’re ha yand gay. Now. Let’s sing a song《Hello,Good morning》. Turn back. Sit down please. 二、T: Today is Thursday. What’s the weather like today? C: It’s fine. T: On, it’ fine. Let’s go to the zoo,ok? C: Ok! T: Let’s riding in my car. Are youready?

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