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人教版高中数学选择性必修二导数的四则运算法则教学设计
求函数的导数的策略(1)先区分函数的运算特点，即函数的和、差、积、商，再根据导数的运算法则求导数；(2)对于三个以上函数的积、商的导数，依次转化为“两个”函数的积、商的导数计算．跟踪训练1 求下列函数的导数：(1)y＝x2＋log3x； (2)y＝x3·ex； (3)y＝cos xx.[解] (1)y′＝(x2＋log3x)′＝(x2)′＋(log3x)′＝2x＋1xln 3.(2)y′＝(x3·ex)′＝(x3)′·ex＋x3·(ex)′＝3x2·ex＋x3·ex＝ex(x3＋3x2)．(3)y′＝cos xx′＝?cos x?′·x－cos x·?x?′x2＝－x·sin x－cos xx2＝－xsin x＋cos xx2.跟踪训练2 求下列函数的导数（1）y＝tan x； （2）y＝2sin x2cos x2解析：（1）y＝tan x＝sin xcos x，故y′＝?sin x?′cos x－?cos x?′sin x?cos x?2＝cos2x＋sin2xcos2x＝1cos2x.（2）y＝2sin x2cos x2＝sin x，故y′＝cos x.例5 日常生活中的饮用水通常是经过净化的，随着水的纯净度的提高，所需进化费用不断增加，已知将1t水进化到纯净度为x%所需费用（单位：元），为c(x)=5284/(100-x) (80<x<100)求进化到下列纯净度时，所需进化费用的瞬时变化率：（1） 90% ；（2） 98%解：净化费用的瞬时变化率就是净化费用函数的导数；c^' (x)=〖(5284/(100-x))〗^'=(5284^’×(100-x)-"5284 " 〖(100-x)〗^’)/〖(100-x)〗^2 =(0×(100-x)-"5284 " ×(-1))/〖(100-x)〗^2 ="5284 " /〖(100-x)〗^2
人教版高中数学选择性必修二导数的概念及其几何意义教学设计
新知探究前面我们研究了两类变化率问题：一类是物理学中的问题，涉及平均速度和瞬时速度；另一类是几何学中的问题，涉及割线斜率和切线斜率。这两类问题来自不同的学科领域，但在解决问题时，都采用了由“平均变化率”逼近“瞬时变化率”的思想方法；问题的答案也是一样的表示形式。下面我们用上述思想方法研究更一般的问题。探究1： 对于函数y=f(x) ，设自变量x从x_0变化到x_0+ ?x ，相应地，函数值y就从f(x_0)变化到f(〖x+x〗_0) 。这时， x的变化量为?x，y的变化量为?y=f(x_0+?x)-f(x_0)我们把比值?y/?x，即?y/?x=(f(x_0+?x)-f(x_0)" " )/?x叫做函数从x_0到x_0+?x的平均变化率。1．导数的概念如果当Δx→0时，平均变化率ΔyΔx无限趋近于一个确定的值，即ΔyΔx有极限，则称y＝f (x)在x＝x0处____，并把这个________叫做y＝f (x)在x＝x0处的导数(也称为__________)，记作f ′(x0)或________，即
人教版高中数学选择性必修二等比数列的前n项和公式 (1) 教学设计
新知探究国际象棋起源于古代印度.相传国王要奖赏国际象棋的发明者，问他想要什么.发明者说：“请在棋盘的第1个格子里放上1颗麦粒，第2个格子里放上2颗麦粒，第3个格子里放上4颗麦粒，依次类推，每个格子里放的麦粒都是前一个格子里放的麦粒数的2倍，直到第64个格子.请给我足够的麦粒以实现上述要求.”国王觉得这个要求不高，就欣然同意了.假定千粒麦粒的质量为40克，据查，2016--2017年度世界年度小麦产量约为7.5亿吨，根据以上数据，判断国王是否能实现他的诺言.问题1：每个格子里放的麦粒数可以构成一个数列,请判断分析这个数列是否是等比数列?并写出这个等比数列的通项公式.是等比数列,首项是1，公比是2，共64项. 通项公式为〖a_n=2〗^(n-1)问题2：请将发明者的要求表述成数学问题.
人教版高中数学选择性必修二数列的概念（1）教学设计
情景导学古语云:“勤学如春起之苗,不见其增,日有所长”如果对“春起之苗”每日用精密仪器度量,则每日的高度值按日期排在一起,可组成一个数列. 那么什么叫数列呢?二、问题探究1. 王芳从一岁到17岁，每年生日那天测量身高，将这些身高数据（单位：厘米）依次排成一列数：75,87,96,103,110,116,120,128,138，145,153,158,160,162,163,165,168 ①记王芳第i岁的身高为 h_i ，那么h_1=75 , h_2=87, 〖"…" ，h〗_17=168.我们发现h_i中的i反映了身高按岁数从1到17的顺序排列时的确定位置，即h_1=75 是排在第1位的数，h_2=87是排在第2位的数〖"…" ，h〗_17 =168是排在第17位的数，它们之间不能交换位置，所以①具有确定顺序的一列数。2. 在两河流域发掘的一块泥板（编号K90，约生产于公元前7世纪）上，有一列依次表示一个月中从第1天到第15天，每天月亮可见部分的数：5,10,20,40,80,96,112,128,144,160,176,192,208,224,240. ②
人教版高中数学选择性必修二变化率问题教学设计
导语在必修第一册中，我们研究了函数的单调性，并利用函数单调性等知识，定性的研究了一次函数、指数函数、对数函数增长速度的差异，知道“对数增长” 是越来越慢的，“指数爆炸” 比“直线上升” 快得多，进一步的能否精确定量的刻画变化速度的快慢呢，下面我们就来研究这个问题。新知探究问题1 高台跳水运动员的速度高台跳水运动中，运动员在运动过程中的重心相对于水面的高度h(单位：m)与起跳后的时间t(单位：s)存在函数关系h(t)＝－4.9t2＋4.8t＋11.如何描述用运动员从起跳到入水的过程中运动的快慢程度呢？直觉告诉我们，运动员从起跳到入水的过程中，在上升阶段运动的越来越慢，在下降阶段运动的越来越快，我们可以把整个运动时间段分成许多小段，用运动员在每段时间内的平均速度v ?近似的描述它的运动状态。
新人教版高中英语必修3Unit 1 Festivals and Celebrations-Reading for writing教学设计二
Step 3 Analyzing article structureActivity 31. Teachers raise questions to guide students to analyze the chapter structure of this diary and think about how to describe the festival experience. (1)What should be included in the opening/body/closing paragraph(s)?(2)How did the writer arrange his/her ideas?(3)What kind of interesting details did the writer describe?(4)How did the writer describe his/her feelings/emotions during the event?2. Students read and compare the three sentence patterns in activity 2. Try to rewrite the first paragraph of the diary with these three sentence patterns. After that, students exchange corrections with their partners. Such as:●This was my first time spending three days experiencing the Naadam Festival in China’s Inner Mongolia Autonomous Region and it was an enjoyable and exciting experience. ●I'll never forget my experience at the Naadam Festival because it was my first time to watch the exciting Mongolian games of horse racing, wrestling, and archery so closely. ●I'll always remember my first experience at the Naadam Festival in China’s Inner Mongolia Autonomous Region because it was so amazing to spend three days witnessing a grand Mongolian ceremony. Step 4 Accumulation of statementsActivity 41. Ask the students to read the diary again. Look for sentences that express feelings and emotions, especially those with the -ing form and the past participle. Such as:● …horse racing, wrestling, and archery, which are all so exciting to watch. ● some amazing performances● I was surprised to see…● I was a little worried about. . . ● feeling really tiredOther emotional statements:●I absolutely enjoyed the archery, too, but the horse races were my favourite part. ●I'm finally back home now, feeling really tired, but celebrating Naadam with my friend was totally worth it. ●He invited me back for the winter to stay in a traditional Mongolian tent and cat hot pot. I can’t wait!2. In addition to the use of the -ing form and the past participle, the teacher should guide the students in the appreciation of these statements, ask them to memorize them, and encourage them to use them reasonably in writing practice.
新人教版高中英语必修3Unit 4 Space Exploration-Listening&Speaking＆Talking教学设计二
The themes of this part are “Talk about how to become an astronaut” and “Talk about life in space”. As Neil Armstrong said “Mystery creates wonder and wonder is the basis of man’s desire to understand. Space is difficult for human to reach, therefore, humans are full of wonders about it. However, if wanting to achieve the dream of reaching the Moon, some of our human should work hard to be an astronaut at first. Part A(Talk about how to become an astronaut) is a radio interview in a radio studio, where the host asked the Chinese astronauts about his story how to become an astronaut. Yang Liwei told his dreamed to be an astronaut since childhood. Then he worked hard to get into college at 22. The next 10 years, he gradually became an experienced pilot. At the same time, to be an astronaut, he had to study hard English, science and astronomy and trained hard to keep in good physical and mental health and to practise using space equipment. Part B (Talk about life in space) is also an interview with the astronaut Brown, who is back on the earth. The host Max asked about his space life, such as his emotion about going back the earth, the eating, shower, brushing, hobbies and his work. Part A and Part B are interviews. So expressing curiosity about the guests’ past life is a communicative skill, which students should be guided to learn.1. Students can get detailed information about how Yang Liwei became an astronaut and Max’s space life.2. Students learn to proper listening strategy to get detailed information---listening for numbers and taking notes.3. Students can learn related sentences or phrases to express their curiosity like “ I wish to know...” “I’d love to know...”4. Students can learn more about the space and astronauts, even be interested in working hard to be an astronaut
新人教版高中英语必修3Unit 4 Space Exploration-Reading and Thinking教学设计二
The theme of this unit focuses on “space exploration.” Students will learn about the training and experience needed to become an astronaut. The text is mainly about the development of space exploration. On the one hand, the text helps students to have a good understanding about the great feats humans have achieved, on the other hand, they will further understand the contributions that we Chinese have achieved, and feel confident and proud about our homeland and strengthen their love for our country. The teacher should instruct students to aim high and study harder to make great progress in the space career if possible.1. Read about the development and value of space exploration.2. Explore the mysteries of the universe and the achievements in space exploration.3. Skillfully use the vocabulary of this text to cultivate self-study ability 4. Develop cooperative learning ability through discussion.1. Enable the Ss to talk about the development and value of space exploration.2. Guide the Ss to summarize the main idea of each paragraph as well as the main idea of the text.3. Help Ss comprehend the main reasons for space exploration. Multi-media, textbook, notebooks.Step 1: Warming up and predictionLook at the title and the pictures of the text and predict what the text will be about?2. What are the main reasons for space exploration?
新人教版高中英语必修3Unit 4 Space Exploration-Reading for Writing教学设计二
⑦在我看来, 探索太空是值得的。As far as I am concerned, it is worthwhile to explore the space.Step 10 Writing---draftRecently, students in our class have had heated a discussion on whether space is worth exploring. Students hold different ideas about it.30% of us think space exploration is not worthwhile. They think space is too far away from us and our daily life and is a waste of money. And the money spent on space exploration can be used to solve the earth’s problems such as starvation and pollution.On the other hand，70% think space is worth exploring because we have benefited a lot from it，such as using satellites for communication and weather forecast. What’s more，with further space research，we may solve the population problem by moving to other planets one day. Also，space research will enable us to find new sources to solve the problem of energy shortages on the earth.As far as I am concerned, it is worthwhile to explore the space. Not only can it promote the development of society but also enrich our life. Step 11 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1.Does the writer explain why he/she changed/wanted to change?2.Does the writer tell how the changes have improved or will improve his/her life?3.Is the text well－organised?4.Does the writer use words and expressions to show similarities and differences?5.Are there any grammar or spelling errors?6.Does the writer use correct punctuation？
新人教版高中英语必修3Unit 5 The value of money-Reading and Thinking教学设计二
? Could you offer me some kind of work here?? I don’t want your charity, I just want an honest job.? Careless: I landed in Britain by accident.Step 7:Consolidation.? Find Henry? Roderick and Oliver were I .making a bet when they saw Henry, a poor young man. ? Know Henry? About a month ago, Henry was sailing and later he found himself carried out to sea by a strong wind. Fortunately, he 2.was spotted by a ship. And it was the ship that brought him to 3.England? Offer money to Henry ? Oliver and Roderick gave Henry a letter and told him that there was money in it. They 4.persuaded him to accept it, and made him 5.promise that it wouldn't be opened until 2 o'clock.Step 8：Language pointsa large amount of: a large quantity of; a great deal ofe.g. They bought a large amount of furniture before they moved their new house.make a bet: make an arrangement to risk money, etc. on an event of which the result is doubtful.e.g. We made a bet on the result of the match.permit sb to do something: allow somebody to do somethinge.g. My mother doesn’t permit me to ride in the street after it rained.by accident: as a result of chancee.g. I only found it by accident.stare at: look at somebody or something with the eyes wide open in a fixed gaze( in astonishment, wonder, fear, etc)to be honest: to tell you the truth; to be franke.g. To be honest, I don’t think we have a chance of winning.Step7 Homework:What do you think will happen to Henry? Will the bank-note help him or get him into trouble?
新人教版高中英语必修3Unit 5 The Value of Money-Reading for Writing教学设计二
2. 您能看到, 我头发太长了。You can see that my hair is much too long.3. 无论什么时候, 只要您想回来就回来。Please come back whenever you want.4. 您仅有很少的头发要理! You only have too little hair to cut !5. 为您服务是我的荣幸！It is my honour to serve you!Step 9 Writing(Henry is walking down the street when he sees a sign for a place that cuts hair. He decides to have it cut. )H=Henry B=BarberH: Good afternoon, I’d like to have my hair cut, if I may. (The barber looks at Henry’s hair and continues cutting another man’s hair. ) Er, I’d really like a haircut. As you can see it’s much too long. B: (in a rude manner) Yes, I can see that. Indeed, I can. H: Fine, well, I’ll have a seat then. (He sits in one of the barber’s chairs. The barber turns to look at Henry. )B: It’s quite expensive here, you know! Are you sure you can afford it?H: Yes. I think so. (After his hair is cut, the barber tells Henry how much he must pay. Henry shows the barber the bank note. )B: Why Mr. . . (looks shocked)H: Adams. Henry Adams. I’m sorry. I don’t have any change. B: Please don’t worry! (wearing a big smile) Nothing to worry about! Nothing at all! Please come back whenever you want, even if you only have too little hair to cut! It will be my honour to serve you!Step 10 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1. Are all the elements of a play included and in good order ?2. Do the character use suitable language ?3. Are the stage directions clear and useful ?4. Is the plot clear and exciting enough ?
人教版高中地理必修2第二章第二节不同等级城市的服务功能说课稿
【教学目标】知识与技能：了解我国不同等级城市的划分，并理论联系实际辨别现实社会的城市等级运用有关原理，说明不同等级城市服务范围的差异。了解城市服务范围与地理位置的关系。掌握不同等级城市的分布特点了解称城市六边形理论，并能用其解释荷兰圩田居民点设置问题过程与方法：通过对枣强镇及上海城市等级演化分布的学习，掌握不同等级城市城市服务范围与功能以及城市等级提高的基本条件通过对德国城市分布案例的学习，总结归纳出不同等级城市分布规律通过城市六边形理论的学习，学会分析城市居民点布局等现实问题情感态度与价值观：通过学生对我国不同等级城市（经济、人口、交通、服务种类）等相关资料的搜集，让学生关心我国基本地理国情，增强热爱祖国的情感。养成求真、求实的科学态度，提高地理审美情趣。
人教A版高中数学必修二简单随机抽样教学设计
知识探究（一）：普查与抽查像人口普查这样，对每一个调查调查对象都进行调查的方法，称为全面调查（又称普查）。 在一个调查中，我们把调查对象的全体称为总体，组成总体的每一个调查对象称为个体。为了强调调查目的，也可以把调查对象的某些指标的全体作为总体，每一个调查对象的相应指标作为个体。问题二：除了普查，还有其他的调查方法吗？由于人口普查需要花费巨大的财力、物力，因而不宜经常进行。为了及时掌握全国人口变动状况，我国每年还会进行一次人口变动情况的调查，根据抽取的居民情况来推断总体的人口变动情况。像这样，根据一定目的，从总体中抽取一部分个体进行调查，并以此为依据对总体的情况作出估计和判断的方法，称为抽样调查（或称抽查）。我们把从总体中抽取的那部分个体称为样本，样本中包含的个体数称为样本量。
大班语言教案：城市老鼠和乡村老鼠 大班语言综合活动
一、活动目标1、欣赏图片，感受城市、乡村各具特色的美景和生活。2、在辩论活动中了解城市和农村的不同生活方式，懂得适合自己的才是最好的。二、 活动准备：1、事先安排幼儿参观城市或者乡村，布置主题墙面的城市和乡村的图片。2、情景童话剧表演，布置场地。3、动画制作。4、城市和乡村的图片若干张
大班体育教案：快乐的户外区域体育——探险寻宝
2、增强规则意识：根据指示箭头有序活动，不随便插队。3、敢于挑战困难，勇敢坚强。4、感受运动的快乐，愉悦身心。（一）平衡区——过鳄鱼桥活动目标：1、在梯子、轮胎、摇板等组合器械上行走，提高平衡能力。2、克服困难，勇敢前进。
科学教案：十二生肖
2.发展幼儿的观察力，培养幼儿简单的推理能力。 3.感知十二生肖所包括的12种动物、十二生肖的排列顺序，感知、了解十二生肖一年一种属相，12年一个轮回的规律。 活动准备: 1.教具：自制生肖钟、山洞大山的图片。 2.学具：蛋糕盒制作的钟面、十二生肖的图片.胶水等 3.知识准备：幼儿认识时钟。 活动重点：幼儿知道十二生肖的排列顺序。 活动难点：知道十二生肖每12年轮回一次。 活动过程： 一、导入 出示生肖钟，引出课题，激发幼儿兴趣。 二、展开 1.了解十二生肖的12种动物，简单的感知其排列顺序，理解其含义。 （1）请幼儿说出钟面上有多少种动物，为什么？我们来数一数，看看是不是12种。从哪开始数呢？老鼠第一？谁第二？谁第六？小兔第几？ （2）小朋友当中有没有属“小老鼠”的？为什么说自己是属“小老鼠”的？（引出“属相”一词，丰富幼儿词汇）小朋友还知道有什么属相？
人教版高中历史必修2第二次工业革命说课稿2篇
②内燃机的发明推动了交通运输领域的革新。19世纪末，新型的交通工具——汽车出现了。1885年，德国人卡尔·本茨成功地制成了第一辆用汽油内燃机驱动的汽车。1896年，美国人亨利·福特制造出他的第一辆四轮汽车。与此同时，许多国家都开始建立汽车工业。随后，以内燃机为动力的内燃机车、远洋轮船、飞机等也不断涌现出来。1903年，美国人莱特兄弟制造的飞机试飞成功，实现了人类翱翔天空的梦想，预告了交通运输新纪元的到来。③内燃机的发明推动了石油开采业的发展和石油化学工业的产生。石油也像电力一样成为一种极为重要的新能源。1870年，全世界开采的石油只有80万吨，到1900年猛增至2 000万吨。（3）化学工业的发展：①无机化学工业：用化学反应的方式开始从煤焦油中提炼氨、笨、等，用化学合成的方式，美国人发明了塑料，法国人发明了纤维，瑞典人发明了炸药等。
人教A版高中数学必修一用二分法求方程的近似解教学设计（2）
本节通过学习用二分法求方程近似解的的方法，使学生体会函数与方程之间的关系，通过一些函数模型的实例，让学生感受建立函数模型的过程和方法，体会函数在数学和其他学科中的广泛应用，进一步认识到函数是描述客观世界变化规律的基本数学模型，能初步运用函数思想解决一些生活中的简单问题。课程目标1.了解二分法的原理及其适用条件.2.掌握二分法的实施步骤.3.通过用二分法求方程的近似解，使学生体会函数零点与方程根之间的联系，初步形成用函数观点处理问题的意识.数学学科素养1.数学抽象：二分法的概念；2.逻辑推理：用二分法求函数零点近似值的步骤；3.数学运算：求函数零点近似值；4.数学建模：通过一些函数模型的实例，让学生感受建立函数模型的过程和方法，体会函数在数学和其他学科中的广泛应用.
人教版高中政治必修4关于世界观的学说说课稿（二）
一、教材分析1、本框题在教材中的地位。本框题教材所处的地位及联系：《关于世界观的学说》是人教版2004年12月第一版教材高二政治必修4第一单元第二框题，在这之前学生已经学习了生活处处有哲学的内容，了解了哲学与我们的生活息息相关，这为过度到本框题的学习起到了铺垫的作用。本框题又是学生进入哲学的入门，因而它在生活与哲学中具有不容忽视的重要地位。学好本框题，为学生从总体上对哲学的理解，为以后学好哲学做了良好的铺垫作用。本框题是进入哲学与生活不可缺少的部分，也学生的学习生活常常遇到的问题。2、教学目标：1. 知识目标：（1）哲学的含义；（2）哲学与世界观的关系；（3）哲学与具体科学知识的关系。2. 能力目标：（1）通过对哲学与世界观、方法论、具体知识三对关系的分析，培养辩证思维的能；（2）通过对身边生活事例、哲理故事、哲学家观点的体悟，培养分析问题的能力；
人教版高中政治必修4哲学的基本问题说课稿（二）
②关于哲学的第二个问题是——思维和存在有没有同一性解释同一性——就是说意识（思维）能否正确认识物质（存在）的问题。（让学生表达他们自己的意见）总结得出三种看法——认为意识（思维）可以正确认识物质（存在）的，属于可知论者；凡是认为意识（思维）不能正确认识物质（存在），属于不可知论者。当然也有些同学是两者观点都有，这种同学我们把他称为不彻底的不可知论者。2、为什么思维和存在的关系问题是哲学的基本问题（1）它是人们在生活和实践活动中首先遇到和无法回避的基本问题（举例说明问题，吃饭的时候吃什么菜，学习计划与学习的实际等等）结合教材P10探究进行讲解举例：11月31日请全班同学吃雪糕，吃完后再去肯德基大吃一顿，之后再到卡拉OK唱通宵——不切实际，因为11月并没有31日。（2）它是一切哲学都不能回避、必须回答的问题（不同的回答，直接决定着哲学的不同发展方向。）
