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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.
【高教版】中职数学拓展模块：3.5《正态分布》教学设计
教学目的：理解并熟练掌握正态分布的密度函数、分布函数、数字特征及线性性质。教学重点：正态分布的密度函数和分布函数。教学难点：正态分布密度曲线的特征及正态分布的线性性质。教学学时：2学时教学过程:第四章 正态分布§4.1 正态分布的概率密度与分布函数在讨论正态分布之前，我们先计算积分。首先计算。因为(利用极坐标计算)所以。记，则利用定积分的换元法有因为，所以它可以作为某个连续随机变量的概率密度函数。定义 如果连续随机变量的概率密度为则称随机变量服从正态分布,记作,其中是正态分布的参数。正态分布也称为高斯（Gauss）分布。
高教版中职数学基础模块下册：8.4《圆》教学设计
教 学 过 程教师 行为学生 行为教学 意图时间 *揭示课题 8．4 圆（二） *创设情境 兴趣导入 【知识回顾】 我们知道，平面内直线与圆的位置关系有三种（如图8-21）： （1）相离：无交点； （2）相切：仅有一个交点； （3）相交：有两个交点． 并且知道，直线与圆的位置关系，可以由圆心到直线的距离d与半径r的关系来判别（如图8-22）： （1）：直线与圆相离； （2）：直线与圆相切； （3）：直线与圆相交. 介绍 讲解 说明 质疑 引导 分析 了解 思考 思考 带领 学生 分析 启发 学生思考 0 15*动脑思考 探索新知 【新知识】 设圆的标准方程为 ， 则圆心C(a，b)到直线的距离为 ． 比较d与r的大小，就可以判断直线与圆的位置关系． 讲解 说明 引领 分析 思考 理解 带领 学生 分析 30*巩固知识 典型例题 【知识巩固】 例6 判断下列各直线与圆的位置关系： ⑴直线, 圆； ⑵直线,圆． 解 ⑴ 由方程知，圆C的半径，圆心为． 圆心C到直线的距离为 , 由于，故直线与圆相交． ⑵ 将方程化成圆的标准方程，得 ． 因此，圆心为，半径．圆心C到直线的距离为 , 即由于，所以直线与圆相交． 【想一想】 你是否可以找到判断直线与圆的位置关系的其他方法？ *例7 过点作圆的切线，试求切线方程． 分析 求切线方程的关键是求出切线的斜率．可以利用原点到切线的距离等于半径的条件来确定． 解 设所求切线的斜率为，则切线方程为 ， 即 ． 圆的标准方程为 ， 所以圆心，半径． 图8－23 圆心到切线的距离为 ， 由于圆心到切线的距离与半径相等，所以 ， 解得 ． 故所求切线方程（如图8-23）为 ， 即 或． 说明 例题7中所使用的方法是待定系数法，在利用代数方法研究几何问题中有着广泛的应用． 【想一想】 能否利用“切线垂直于过切点的半径”的几何性质求出切线方程？ 说明 强调 引领 讲解 说明 引领 讲解 说明 观察 思考 主动 求解 思考 主动 求解 通过例题进一步领会 注意 观察 学生 是否 理解 知识 点 50
【高教版】中职数学拓展模块：2.1《椭圆》优秀教学设计
本人所教的两个班级学生普遍存在着数学科基础知识较为薄弱，计算能力较差，综合能力不强，对数学学习有一定的困难。在课堂上的主体作用的体现不是太充分，但是他们能意识到自己的不足，对数学课的学习兴趣高，积极性强。 学生在学习交往上表现为个别化学习，课堂上较为依赖老师的引导。学生的群体性小组交流能力与协同讨论学习的能力不强，对学习资源和知识信息的获取、加工、处理和综合的能力较低。在教学中尽量分析细致，减少跨度较大的环节，对重要的推导过程采用板书方式逐步进行，力求让绝大多数学生接受。 1.理解椭圆标准方程的推导；掌握椭圆的标准方程；会根据条件求椭圆的标准方程，会根据椭圆的标准方程求焦点坐标. 2.通过椭圆图形的研究和标准方程的讨论，使学生掌握椭圆的几何性质，能正确地画出椭圆的图形，并了解椭圆的一些实际应用。 1.让学生经历椭圆标准方程的推导过程，进一步掌握求曲线方程的一般方法，体会数形结合等数学思想；培养学生运用类比、联想等方法提出问题. 2.培养学生运用数形结合的思想，进一步掌握利用方程研究曲线的基本方法，通过与椭圆几何性质的对比来提高学生联想、类比、归纳的能力，解决一些实际问题。 1.通过具体的情境感知研究椭圆标准方程的必要性和实际意义；体会数学的对称美、简洁美，培养学生的审美情趣，形成学习数学知识的积极态度. 2.进一步理解并掌握代数知识在解析几何运算中的作用，提高解方程组和计算能力，通过“数”研究“形”，说明“数”与“形”存在矛盾的统一体中，通过“数”的变化研究“形”的本质。帮助学生建立勇于探索创新的精神和克服困难的信心。
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超几何分布教学设计
探究新知问题1：已知100件产品中有8件次品，现从中采用有放回方式随机抽取4件．设抽取的4件产品中次品数为X，求随机变量X的分布列.（1）：采用有放回抽样，随机变量X服从二项分布吗？采用有放回抽样，则每次抽到次品的概率为0.08，且各次抽样的结果相互独立,此时X服从二项分布,即X～B(4，0.08).（2）：如果采用不放回抽样，抽取的4件产品中次品数X服从二项分布吗？若不服从，那么X的分布列是什么？不服从，根据古典概型求X的分布列.解：从100件产品中任取4件有 C_100^4 种不同的取法，从100件产品中任取4件，次品数X可能取0,1,2,3,4.恰有k件次品的取法有C_8^k C_92^(4-k)种.一般地，假设一批产品共有N件，其中有M件次品．从N件产品中随机抽取n件(不放回），用X表示抽取的n件产品中的次品数，则X的分布列为P(X＝k）＝CkM Cn－kN－M CnN ，k＝m，m＋1，m＋2，…，r.其中n，N，M∈N*，M≤N，n≤N，m＝max{0，n－N＋M}，r＝min{n，M}，则称随机变量X服从超几何分布．
人教版高中数学选修3正态分布教学设计
3.某县农民月均收入服从N(500,202)的正态分布,则此县农民月均收入在500元到520元间人数的百分比约为 . 解析:因为月收入服从正态分布N(500,202),所以μ=500,σ=20,μ-σ=480,μ+σ=520.所以月均收入在[480,520]范围内的概率为0.683.由图像的对称性可知,此县农民月均收入在500到520元间人数的百分比约为34.15%.答案:34.15%4.某种零件的尺寸ξ(单位:cm)服从正态分布N(3,12),则不属于区间[1,5]这个尺寸范围的零件数约占总数的 . 解析:零件尺寸属于区间[μ-2σ,μ+2σ],即零件尺寸在[1,5]内取值的概率约为95.4%,故零件尺寸不属于区间[1,5]内的概率为1-95.4%=4.6%.答案:4.6%5. 设在一次数学考试中,某班学生的分数X~N(110,202),且知试卷满分150分,这个班的学生共54人,求这个班在这次数学考试中及格(即90分及90分以上)的人数和130分以上的人数.解:μ=110,σ=20,P(X≥90)=P(X-110≥-20)=P(X-μ≥-σ),∵P(X-μσ)≈2P(X-μ130)=P(X-110>20)=P(X-μ>σ),∴P(X-μσ)≈0.683+2P(X-μ>σ)=1,∴P(X-μ>σ)=0.158 5,即P(X>130)=0.158 5.∴54×0.158 5≈9(人),即130分以上的人数约为9人.
【高教版】中职数学拓展模块：2.3《抛物线》教学设计
一、教学目标(一)知识教育点使学生掌握抛物线的定义、抛物线的标准方程及其推导过程．(二)能力训练点要求学生进一步熟练掌握解析几何的基本思想方法，提高分析、对比、概括、转化等方面的能力．(三)学科渗透点通过一个简单实验引入抛物线的定义，可以对学生进行理论来源于实践的辩证唯物主义思想教育．二、教材分析1．重点：抛物线的定义和标准方程．2．难点：抛物线的标准方程的推导．三、活动设计提问、回顾、实验、讲解、板演、归纳表格．四、教学过程(一)导出课题我们已学习了圆、椭圆、双曲线三种圆锥曲线．今天我们将学习第四种圆锥曲线——抛物线，以及它的定义和标准方程．课题是“抛物线及其标准方程”．首先，利用篮球和排球的运动轨迹给出抛物线的实际意义，再利用太阳灶和抛物线型的桥说明抛物线的实际用途。
【高教版】中职数学拓展模块：2.2《双曲线》教学设计
教学准备 1. 教学目标 知识与技能掌握双曲线的定义，掌握双曲线的四种标准方程形式及其对应的焦点、准线．过程与方法掌握对双曲线标准方程的推导，进一步理解求曲线方程的方法——坐标法．通过本节课的学习，提高学生观察、类比、分析和概括的能力．情感、态度与价值观通过本节的学习，体验研究解析几何的基本思想，感受圆锥曲线在刻画现实和解决实际问题中的作用，进一步体会数形结合的思想．2. 教学重点/难点 教学重点双曲线的定义及焦点及双曲线标准方程．教学难点在推导双曲线标准方程的过程中，如何选择适当的坐标系． 3. 教学用具 多媒体4. 标签
新人教版高中英语选修2Unit 5 Reading for writing教学设计
你校英语报计划出版一期急救常识专刊,现面向全校学生公开征集稿件,你有意参加。请你根据下面提示内容,用英语写一篇短文,介绍在车祸现场对伤者进行急救的方法和步骤。1.确保现场的安全;2.询问伤者,确保其呼吸正常;3.检查伤口,如流血则应采取止血措施;4.如需急救,确保其处于康复位置。注意:1.词数80左右;2.可以适当增加细节,以使行文连贯。参考词汇:康复位置 recovery positionAs we all know, having a knowledge of first aid can make a great difference in our daily life. If a traffic accident happens and someone is injured, the following steps can be used to treat the injured.In the first place, we should make sure that the accident scene is safe so that we won’t get hurt. We should ask the injured person if he is OK, and see if he is breathing. What’s more, we should check for cuts and wounds. If he is bleeding badly, it is vital that we should try to stop the bleeding by applying pressure to the injury. This is because if a person loses too much blood, he may die. If necessary, take the injured person to the hospital as soon as possible.Do remember: when giving first aid, please be sure to place the person in a recovery position.
新人教版高中英语必修3Unit 1 Festivals and Celebrations教学设计三
*wide range of origins(= a great number of different origins, many kinds of origins)*It featured a parade and a great feast with music, dancing, and sports. (=A parade and a great feast with music, dancing, and sports were included as important parts of the Egyptian harvest festival.)*.. some traditions may fade away and others may be established.(= Some traditions may disappear gradually, while other new traditions may come into being.）Step 6 Practice(1) Listen and follow the tape.The teacher may remind the students to pay attention to the meaning and usage of the black words in the context, so as to prepare for the completion of the blanks in activity 5 and vocabulary exercises in the exercise book.(2) Students complete the text of activity 5 by themselves.The teacher needs to remind the students to fill in the blanks with the correct form of the vocabulary they have learned in the text.Students exchange their answers with their partners, and then teachers and students check their answers.(3)Finish the Ex in Activity 5 of students’ book.Step 7 Homework1. Read the text again, in-depth understanding of the text;2. Discuss the origin of festivals, the historical changes of related customs, the influence of commercial society on festivals and the connotation and essential meaning of festivals.3. Complete relevant exercises in the guide plan.1、通过本节内容学习，学生是否理解和掌握阅读文本中的新词汇的意义与用法；2、通过本节内容学习，学生能否结合文本特点快速而准确地找到主题句；3、通过本节内容学习，学生能否理清论说文的语篇结构和文本逻辑，了解节日风俗发展与变迁，感悟节日的内涵与意义。
新人教版高中英语必修3Unit 2 Morals and Virtues教学设计三
The joke set her crying.这个玩笑使她哭起来。Step 5 ReadingActivity 31. Students read the small text in activity 3. The teacher provides several small questions to check whether students understand the content of the text and the ideographic function of the -ing form in the text.*Where are those people?*Why did Dr Bethune come to China?*How did he help the Chinese people during the war?*What did Chairman Mao Zedong say about him?2. Ss try to rewrite some sentences using the -ing form. Then check the answers. When checking the answers, the teacher can ask different students to read the rewritten sentences and give comments.Answers:1. he became very interested in medicine, deciding to become a doctor.2. …after hearing that many people were dying in the war.3. Helping to organise hospitals, he taught doctors and nurses, and showed people how to give first aid./ He helped to organise hospitals, teaching doctors and nurses, and showing people how to give first aid.4. …praising Dr Bethune as a hero to be remembered in China.Step 6 PracticeActivity 4Students complete grammar activities 2 and 3 on page 69 of the workbook.Step 6 Homework1. Understand and master the functions and usage of the -ing form;2. Finish the other exercises in Using structures.1、通过本节内容学习，学生是否理解和掌握动词-ing形式作宾语补足语语和状语语的功能和意义；2、通过本节内容学习，学生能否正确使用动词-ing形式描述人物的行为、动作及其经历；3、通过本节内容学习，学生能否独立完成练习册和导学案中的相关练习。
新人教版高中英语必修3Unit 3 Diverse Cultures教学设计四
该板块的活动主题是“介绍一个有显著文化特征的地方”( Describe a place with distinctive cultural identity)。该板块通过介绍中国城继续聚焦中国文化。本单元主题图呈现的是旧金山中国城的典型景象, Reading and Thinking部分也提到中国城,为该板块作铺垫。介绍中国城的目的主要是体现中国文化与美国多元文化的关系,它是美国多元文化的重要组成部分。中国城也是海外华人的精神家园和传播中国文化的重要窗口,外国人在中国城能近距离体验中国文化。1. Read the text to understand the cultural characteristics of Chinatown in San Francisco and the relationship between Chinese culture and American multiculturalism;2. Through reading, learn to comb the main information of the article, understand the author's writing purpose and writing characteristics;3. Learn to give a comprehensive, accurate, and organized description of the city or town you live in;Learn to revise and evaluate your writing.Importance:1. Guide the students to read the introduction of Chinatown in San Francisco and grasp its writing characteristics;2. Guide students to introduce their city or town in a comprehensive, accurate and organized way;3. Learn to comb the main information of the article, understand the author's writing purpose, and master the core vocabulary.
新人教版高中英语选修2Unit 4 Reading and thinking教学设计
【词汇精讲】highlight n.最好或最精彩的部分 vt.突出;强调;使醒目One of the highlights of the trip was seeing the Taj Mahal.这次旅行的亮点之一是参观泰姬陵。Your resume should highlight your skills and achievements.你的简历应该突出你的技能和成就。The report highlights the major problems facing society today.报告强调了当今社会所面临的主要问题。I’ve highlighted the important passages in yellow.我用黄色标出了重要段落。7.Edmonton is freezing cold in winter,with daily temperatures averaging -10 ℃.埃德蒙顿冬季寒冷,日平均气温为-10°C。【词汇精讲】freezing adj.极冷的;冰冻的Leave a basin of water outside in freezing weather.在冰冻的天气里,放一盆水在室外。It’s freezing cold outside so wear a warm coat.外面超冷的,所以穿一个暖和一点的外套吧。8.It was not until 9:30 a.m.that they finally reached the capital of Ontario,Toronto.直到上午9时30分,他们才终于到达多伦多的首府安大略省。【句式剖析】本句是一个强调句,强调的是句子的时间状语until 9:30。含有not...until...的句子的强调句为It is not until...that...,that后面的句子要用肯定形式。It was not until then that I suddenly realized nobody was happier than I was.直到那时我才突然意识到没有人比我更幸福了。
新人教版高中英语选修2Unit 2 Learning about Language教学设计
The activity theme of this section is to design various activities around the key words in the first text. Therefore, the activities require students to pay attention to the spelling of words. On the other hand, let students grasp the meaning of words more accurately through sentences and short texts. This kind of teaching design also helps to improve the ability of using English thinking.1. Cultivating students' ability to use word formation to induce and memorize vocabulary, and the ability to use lexical chunks to express meaning.2. Guide the students to think independently and use the correct form of words to complete sentences3. Cultivate students' habit of using lexical chunks to express language completely, guide students to draw words in sentences quickly, pay attention to word collocation, so as to accumulate more authentic expressions4. Instruct students to create sentences with the chunks.1. Enable students to use the language points in the real situation or specific contexts flexibly and appropriately.2. Guiding the Ss to use unit topic words and the sentence patterns in a richer context.Step1: Think of a word that best fits each definition.1. to remember sth2.to accept, admit, or recognize sth or the truth/existence of sth3. the process of changing sth or yourself to suit a new situation4 .to make sb feel less worried or unhappy5. a strong desire to achieve sth
新人教版高中英语选修2Unit 2 Reading and thinking教学设计
Her tutor told her to acknowledge __________ other people had said if she cited their ideas, and advised her _______（read） lots of information in order to form __________wise opinion of her own.Now halfway __________ her exchange year, Xie Lei felt much more at home in the UK. She said __________ (engage) in British culture had helped and that she had been__________ (involve) in social activities. She also said while learning about business, she was acting as a cultural messenger __________（build） a bridge between the two countries. keys:Xie Lei, a 19yearold Chinese student, said goodbye to her family and friends in China and boarded (board) a plane for London six months ago in order to get a business qualification. She was ambitious(ambition) to set up a business after graduation. It was the first time that she had left (leave) home.At first, Xie Lei had to adapt to life in a different country. She chose to live with a host family, who can help with her adaptation (adapt) to the new culture. When she missed home, she felt comforted (comfort) to have a second family. Also Xie Lei had to satisfy academic requirements. Her tutor told her to acknowledge what other people had said if she cited their ideas, and advised her to read lots of information in order to form a wise opinion of her own.Now halfway through her exchange year, Xie Lei felt much more at home in the UK. She said engaging (engage) in British culture had helped and that she had been involved (involve) in social activities. She also said while learning about business, she was acting as a cultural messenger building a bridge between the two countries.
新人教版高中英语选修2Unit 2 Using langauge-Listening教学设计
? B: Absolutely! Getting involved with Chinese cultural activities there definitely helped a lot. I got to practice my Chinese on a daily basis, and I could learn how native Chinese speakers spoke.? A: What do you feel is your biggest achievement?? B: Learning Chinese characters! I have learnt about 1,500 so far. When I first started, I didn't think it was even going to be possible to learn so many, but now I find that I can read signs, menus, and even some easy newspaper articles.? A: What are you most keen on?? B: I've really become keen on learning more about the Chinese culture, in particular Chinese calligraphy. As I have learnt Chinese characters, I have developed a great appreciation for their meaning. I want to explore Chinese characters by learning how to write them in a more beautiful way. ? A: Finally, what do you want to say to anyone interested in learning Chinese?? I have really become keen on learning more about the Chinese culture, in particular Chinese Calligraphy. As I have learnt Chinese character, I have developed a great appreciation for their meaning. I want to explore Chinese characters by learning how to write them in a more beautiful way.? A: Finally, what do you want to say to anyone interested in learning Chinese?? B: I'd say, give it a shot! While some aspects may be difficult, it is quite rewarding and you will be happy that you tried.? A: Thanks for your time. ? B:You're welcome.
新人教版高中英语选修2Unit 4 Using langauge-Listening教学设计
The theme of the listening section is " talking about scenery and culture along a journey."The part is designed to further lead the students to understand Canadian natural geography and social environment, and integrated into the cultural contrast by mentioning the long train journey from Beijing to Moscow routes. On this basis, the part activates students related travel experience, lets the student serial dialogue, guides the student to explore further the pleasure and meaning of the long journey, and Chinese and foreign cultural comparison.The part also provides a framework for the continuation of the dialogue, which is designed to provide a framework for students to successfully complete their oral expressions, and to incorporate an important trading strategy to end the dialogue naturally.1. Help students to understand and master some common English idioms in the context, and experience the expression effect of English idioms.2. Guide the students to understand the identity of different people in the listening context, and finish the dialogue according to their own experience.3. Instruct the students to use appropriate language to express surprise and curiosity about space and place in the dialogue, and master the oral strategy of ending the dialogue naturally.1. Instruct students to grasp the key information and important details of the dialogue.2. Instruct students to conduct a similar talk on the relevant topic.
新人教版高中英语选修2Unit 5 Learning about Language教学设计
The purpose of this section of vocabulary exercises is to consolidate the key words in the first part of the reading text, let the students write the words according to the English definition, and focus on the detection of the meaning and spelling of the new words. The teaching design includes use English definition to explain words, which is conducive to improving students' interest in vocabulary learning, cultivating their sense of English language and thinking in English, and making students willing to use this method to better grasp the meaning of words, expand their vocabulary, and improve their ability of vocabulary application. Besides, the design offers more context including sentences and short passage for students to practice words flexibly.1. Guide students to understand and consolidate the meaning and usage of the vocabulary in the context, 2. Guide the students to use the unit topic vocabulary in a richer context3. Let the students sort out and accumulate the accumulated vocabulary, establishes the semantic connection between the vocabulary,4. Enable students to understand and master the vocabulary more effectivelyGuiding the Ss to use unit topic words and the sentence patterns in a richer context.Step1: Read the passage about chemical burns and fill in the blanks with the correct forms of the words in the box.
新人教版高中英语必修3Unit 2 Morals and Virtues教学设计四
3.Teachers ask different groups to report the answers to the questions and ask them to try different sentence patterns.The teacher added some sentence patterns for students to refer to when writing.Step 4 Writing taskActivity 51.Write the first draft.Students first review the evaluation criteria in activity 5, and then independently complete the draft according to the outline of activity 4, the answers to the questions listed in the group discussion and report, and the reference sentence pattern.2.Change partners.The teacher guides the students to evaluate their partner's composition according to the checklist of activity 5 and proposes Suggestions for modification.3.Finalize the draft.Based on the peer evaluation, students revise their own compositions and determine the final draft.Finally, through group recommendation, the teacher selects excellent compositions for projection display or reading aloud in class, and gives comments and Suggestions.Step 5 Showing writingActivity 5T call some Ss to share their writing.Step 6 Homework1. Read the passage in this section to better understand the passage.2. Carefully understand the hierarchical structure of the article, and deeply understand the plot of the story according to the causes, process and results;3. Independently complete the relevant exercises in the guide plan.1、通过本节内容学习，学生是否理解和掌握阅读文本中的新词汇的意义与用法；2、通过本节内容学习，学生能否通过人物言行的对比分析道德故事的深层内涵；3、通过本节内容学习，学生能否根据故事的起因、经过和结果来深入理解故事的情节，从而了解文章的层次结构；4、结合现实生活案例发表自己的见解和看法,写一篇观点明确、层次分明的故事评论。