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新人教版高中英语必修1Unit 3 Sports and Fitness- Discovering Useful Structures—tag questions教案
【教材分析】This teaching period mainly deals with the grammar: tag questions.This period carries a considerable significance to the cultivation of students’ spoken English. The teacher is expected to enable students to master this period thoroughly and consolidate the knowledge by doing some exercise of good quality.【教学目标与核心素养】1. Get students to have a good understanding of the basic usages of tag questions.2. Enable students to use the basic phrases structures flexibly.3. Develop students’ speaking and cooperating abilities.4. Strengthen students’ great interest in grammar learning.【教学重难点】1. How to enable students to have a good understanding of the basic usages of tag questions.2. How to enable students to use the basic usages of tag questions flexibly.【教学过程】Step1: 语法自主探究一、基本组成方法1.肯定式陈述部分+否定附加疑问部分（前肯后否） You often play badminton, don’t you? 你经常打羽毛球，是吗？You are going to the gym with me, aren’t you?你要和我一起去健身房，是吗？She’s been to shanghai before, hasn’t she? 她以前去过上海，是吗？2.否定式陈述部分+肯定附加疑问部分（前否后肯） It isn't a beautiful flower, is it? 那不是美丽的花，是吗？You didn't go skating yesterday, did you? 你昨天没去滑冰，是吗？They can’t finish it by Friday, can they?他们不能在星期五之前完成，是吗？
人教版高中英语必修3Astronomy the science of the stars说课稿3篇
Step 2 Pre-listeningAfter students finish their discussion, I will show a picture of Newton and ask them: Who is him? What is he famous for? Could you find out some words to describe him? Maybe students will answer that he is genius for his finding of theGravitation, making a great contribution to the progress of human being. At that time I will show another two pictures of Einstein and Hawking, letting students guess who they are and write down their idea about the Gravitation. For I have arranged them to search more information about the gravity before this class, Students have beenfamiliar with the topic and will not be afraid about this abstract conception, which is helpful for their listening.Step 3 While-listeningIn this step, students will be required to listen the material for three times. The first and listening is extensive listening and the second and third listening is intensive listening. In the first time, They are required to listen a material including Part 1 and Part 2 and choose the best summary of the listening text. After they choose the right answer, They also need work in group to explain what is wrong with the others. Then I will make a conclusion that we should pay attention to the first paragraph and last paragraph and some keys to get the main idea. By doing this, their capacity of generalization will have a great improvement.Before the second listening, I will ask students to scan the blank on the power point quickly and ask them to note down some key words .Then ask them to listen to the Part 1again and fill the first column of the chart. Maybe some students just show the ideas of these three scientists an still can’t catch their development of gravity. Therefore, I will ask them to listen to Part 2 again and fill in the rest. After finish the listening, I will give them ten minutes to discuss with their partner. I will also guidethem to improve their answers when they discuss with others.
新人教版高中英语选修2Unit 3 Food and Culture-Reading and thinking教学设计
The discourse explores the link between food and culture from a foreign’s perspective and it records some authentic Chinese food and illustrates the cultural meaning, gerography features and historic tradition that the food reflects. It is aimed to lead students to understand and think about the connection between food and culture. While teaching, the teacher should instruct students to find out the writing order and the writer’s experieces and feelings towards Chinese food and culture.1.Guide the students to read the text, sort out the information and dig out the topic.2.Understand the cultural connotation, regional characteristics and historical tradition of Chinese cuisine3.Understand and explore the relationship between food and people's personality4.Guide the students to use the cohesive words in the text5.Lead students to accurately grasp the real meaning of the information and improve the overall understanding ability by understanding the implied meaning behind the text.1. Enable the Ss to understand the structure and the writing style of the passage well.2. Lead the Ss to understand and think further about the connection between food and geography and local character traits.Step1: Prediction before reading. Before you read, look at the title, and the picture. What do you think this article is about?keys:It is about various culture and cuisine about a place or some countries.
新人教版高中英语选修2Unit 1 Science and Scientists-Learning about Language教学设计
Step 7: complete the discourse according to the grammar rules.Cholera used to be one of the most 1.__________ (fear) diseases in the world. In the early 19th century, _2_________ an outbreak of cholera hit Europe, millions of people died. But neither its cause, 3__________ its cure was understood. A British doctor, John Snow, wanted to solve the problem and he knew that cholera would not be controlled _4_________ its cause was found. In general, there were two contradictory theories 5 __________ explained how cholera spread. The first suggested that bad air caused the disease. The second was that cholera was caused by an _6_________(infect) from germs in food or water. John Snow thought that the second theory was correct but he needed proof. So when another outbreak of cholera hit London in 1854, he began to investigate. Later, with all the evidence he _7_________ (gather), John Snow was able to announce that the pump water carried cholera germs. Therefore, he had the handle of the pump _8_________ (remove) so that it couldn't be used. Through his intervention，the disease was stopped in its tracks. What is more, John Snow found that some companies sold water from the River Thames that __9__________________ (pollute) by raw waste. The people who drank this water were much more likely _10_________ (get) cholera than those who drank pure or boiled water. Through John Snow's efforts, the _11_________ (threaten) of cholera around the world saw a substantial increase. Keys： 1.feared 2.when 3. nor 4.unless 5.that/which 6.infection 7.had gathered 8.removed 9.was polluted 10.to get 11. threat
新人教版高中英语选修2Unit 1 Science and Scientists-Reading and thinking教学设计
Step 5： After learning the text, discuss with your peers about the following questions:1.John Snow believed Idea 2 was right. How did he finally prove it?2. Do you think John Snow would have solved this problem without the map?3. Cholera is a 19th century disease. What disease do you think is similar to cholera today?SARS and Covid-19 because they are both deadly and fatally infectious, have an unknown cause and need serious public health care to solve them urgently.keys:1. John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.2. No. The map helped John Snow organize his ideas. He was able to identify those households that had had many deaths and check their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.3. SARS and Covid-19 because they are both deadly and fatally infectious, have an unknown cause and need serious public health care to solve them urgently.Step 6: Consolidate what you have learned by filling in the blanks:John Snow was a well-known _1___ in London in the _2__ century. He wanted to find the _3_____ of cholera in order to help people ___4_____ it. In 1854 when a cholera __5__ London, he began to gather information. He ___6__ on a map ___7___ all the dead people had lived and he found that many people who had ___8____ (drink) the dirty water from the __9____ died. So he decided that the polluted water ___10____ cholera. He suggested that the ___11__ of all water supplies should be _12______ and new methods of dealing with ____13___ water be found. Finally, “King Cholera” was __14_____.Keys: 1. doctor 2. 19th 3.cause 4.infected with 5.hit 6.marked 7.where 8.drunk 9.pump 10.carried 11.source 12.examined 13.polluted 14.defeatedHomework: Retell the text after class and preview its language points
新人教版高中英语选修2Unit 4 Journey Across a Vast Land教学设计
当孩子们由父母陪同时，他们才被允许进入这个运动场。3．过去分词(短语)作状语时的几种特殊情况(1)过去分词(短语)在句中作时间、条件、原因、让步状语时，相当于对应的时间、条件、原因及让步状语从句。Seen from the top of the mountain (＝When it is seen from the top of the mountain), the whole town looks more beautiful.从山顶上看，整个城市看起来更美了。Given ten more minutes (＝If we are given ten more minutes), we will finish the work perfectly.如果多给十分钟，我们会完美地完成这项工作。Greatly touched by his words (＝Because she was greatly touched by his words), she was full of tears.由于被他的话深深地感动，她满眼泪花。Warned of the storm (＝Though they were warned of the storm), the farmers were still working on the farm.尽管被警告了风暴的到来，但农民们仍在农场干活。(2)过去分词(短语)在句中作伴随、方式等状语时，可改为句子的并列谓语或改为并列分句。The teacher came into the room, followed by two students (＝and was followed by two students)．后面跟着两个学生，老师走进了房间。He spent the whole afternoon, accompanied by his mom(＝and was accompanied by his mom)．他由母亲陪着度过了一整个下午。
新人教版高中英语选修2Unit 1 Science and Scientists-Using langauge教学设计
This happens because the dish soap molecules have a strong negative charge, and the milk molecules have a strong positive charge. Like magnets, these molecules are attracted to each other, and so they appear to move around on the plate, taking the food coloring with them, making it look like the colors are quickly moving to escape from the soap.Listening text:? Judy: Oh, I'm so sorry that you were ill and couldn't come with us on our field trip. How are you feeling now? Better?? Bill: Much better, thanks. But how was it?? Judy: Wonderful! I especially liked an area of the museum called Light Games.it was really cool. They had a hall of mirrors where I could see myself reflected thousands of times!? Bill: A hall of mirrors can be a lot of fun. What else did they have?? Judy: Well, they had an experiment where we looked at a blue screen for a while, and then suddenly we could see tiny bright lights moving around on it. You'll never guess what those bright lights were!? Bill: Come on, tell me!? Judy: They were our own blood cells. For some reason, our eyes play tricks on us when we look at a blue screen, and we can see our own blood cells moving around like little lights! But there was another thing I liked better. I stood in front of a white light, and it cast different shadows of me in every color of the rainbow!? Bill: Oh, I wish I had been there. Tell me more!? Judy: Well, they had another area for sound. They had a giant piano keyboard that you could use your feet to play. But then, instead of playing the sounds of a piano, it played the voices of classical singers! Then they had a giant dish, and when you spoke into it, it reflected the sound back and made it louder. You could use it to speak in a whisper to someone 17 meters away.? Bill: It all sounds so cool. I wish I could have gone with you? Judy: I know, but we can go together this weekend. I'd love to go there again!? Bill: That sounds like a great idea!
人教A版高中数学必修二总体集中趋势的估计教学设计
（2）平均数受数据中的极端值（2个95）影响较大，使平均数在估计总体时可靠性降低，10天的用水量有8天都在平均值以下。故用中位数来估计每天的用水量更合适。1、样本的数字特征：众数、中位数和平均数；2、用样本频率分布直方图估计样本的众数、中位数、平均数。（1）众数规定为频率分布直方图中最高矩形下端的中点；（2）中位数两边的直方图的面积相等；（3）频率分布直方图中每个小矩形的面积与小矩形底边中点的横坐标之积相加，就是样本数据的估值平均数。学生回顾本节课知识点，教师补充。 让学生掌握本节课知识点，并能够灵活运用。
人教A版高中数学必修二总体离散程度的估计教学设计
问题二：上述问题中，甲、乙的平均数、中位数、众数相同，但二者的射击成绩存在差异，那么，如何度量这种差异呢？我们可以利用极差进行度量。根据上述数据计算得：甲的极差=10-4=6 乙的极差=9-5=4极差在一定程度上刻画了数据的离散程度。由极差发现甲的成绩波动范围比乙的大。但由于极差只使用了数据中最大、最小两个值的信息，所含的信息量很少。也就是说，极差度量出的差异误差较大。问题三：你还能想出其他刻画数据离散程度的办法吗？我们知道，如果射击的成绩很稳定，那么大多数的射击成绩离平均成绩不会太远；相反，如果射击的成绩波动幅度很大，那么大多数的射击成绩离平均成绩会比较远。因此，我们可以通过这两组射击成绩与它们的平均成绩的“平均距离”来度量成绩的波动幅度。
人教A版高中数学必修二总体取值规律的估计教学设计
可以通过下面的步骤计算一组n个数据的第p百分位数：第一步：按从小到大排列原始数据；第二步：计算i=n×p%；第三步：若i不是整数，而大于i的比邻整数位j，则第p百分位数为第j项数据；若i是整数，则第p百分位数为第i项与第i+1项的平均数。我们在初中学过的中位数，相当于是第50百分位数。在实际应用中，除了中位数外，常用的分位数还有第25百分位数，第75百分位数。这三个分位数把一组由小到大排列后的数据分成四等份，因此称为四分位数。其中第25百分位数也称为第一四分位数或下四分位数等，第75百分位数也称为第三四分位数或上四分位数等。另外，像第1百分位数，第5百分位数，第95百分位数，和第99百分位数在统计中也经常被使用。例2、根据下列样本数据，估计树人中学高一年级女生第25，50，75百分位数。
人教A版高中数学必修一充分条件与必要条件教学设计（2）
【例3】本例中“p是q的充分不必要条件”改为“p是q的必要不充分条件”，其他条件不变，试求m的取值范围．【答案】见解析【解析】由x2－8x－20≤0得－2≤x≤10，由x2－2x＋1－m2≤0(m>0)得1－m≤x≤1＋m(m>0)因为p是q的必要不充分条件，所以q?p，且p?/q.则{x|1－m≤x≤1＋m，m>0}?{x|－2≤x≤10}所以m>01－m≥－21＋m≤10，解得0<m≤3.即m的取值范围是(0,3]．解题技巧：（利用充分、必要、充分必要条件的关系求参数范围）(1)化简p、q两命题，(2)根据p与q的关系(充分、必要、充要条件)转化为集合间的关系，(3)利用集合间的关系建立不等关系，(4)求解参数范围．跟踪训练三3．已知P＝{x|a－4<x<a＋4}，Q＝{x|1<x<3}，“x∈P”是“x∈Q”的必要条件，求实数a的取值范围．【答案】见解析【解析】因为“x∈P”是x∈Q的必要条件，所以Q?P.所以a－4≤1a＋4≥3解得－1≤a≤5即a的取值范围是[－1,5]．五、课堂小结让学生总结本节课所学主要知识及解题技巧
人教A版高中数学必修一充分条件与必要条件教学设计（1）
本课是高中数学第一章第4节，充要条件是中学数学中最重要的数学概念之一， 它主要讨论了命题的条件与结论之间的逻辑关系,目的是为今后的数学学习特别是数学推理的学习打下基础。从学生学习的角度看，与旧教材相比，教学时间的前置，造成学生在学习充要条件这一概念时的知识储备不够丰富，逻辑思维能力的训练不够充分，这也为教师的教学带来一定的困难．“充要条件”这一节介绍了充分条件,必要条件和充要条件三个概念,由于这些概念比较抽象,中学生不易理解,用它们去解决具体问题则更为困难,因此”充要条件”的教学成为中学数学的难点之一,而必要条件的定义又是本节内容的难点.A.正确理解充分不必要条件、必要不充分条件、充要条件的概念；B.会判断命题的充分条件、必要条件、充要条件．C.通过学习，使学生明白对条件的判定应该归结为判断命题的真假.D.在观察和思考中，在解题和证明题中，培养学生思维能力的严密性品质．
人教A版高中数学必修一不同函数增长的差异教学设计（2）
本节课在已学幂函数、指数函数、对数函数的增长方式存在很大差异.事实上，这种差异正是不同类型现实问题具有不同增长规律的反应.而本节课重在研究不同函数增长的差异.课程目标1.掌握常见增长函数的定义、图象、性质,并体会其增长的快慢.2.理解直线上升、对数增长、指数爆炸的含义以及三种函数模型的性质的比较,培养数学建模和数学运算等核心素养.数学学科素养1.数学抽象：常见增长函数的定义、图象、性质；2.逻辑推理：三种函数的增长速度比较；3.数学运算：由函数图像求函数解析式；4.数据分析：由图象判断指数函数、对数函数和幂函数；5.数学建模：通过由抽象到具体，由具体到一般的数形结合思想总结函数性质.重点：比较函数值得大小；难点：几种增长函数模型的应用．教学方法：以学生为主体，采用诱思探究式教学，精讲多练。教学工具：多媒体。
人教A版高中数学必修一对数函数的概念教学设计（1）
本节课是新版教材人教A版普通高中课程标准实验教科书数学必修1第四章第4.4.1节《对数函数的概念》。对数函数是高中数学在指数函数之后的重要初等函数之一。对数函数与指数函数联系密切，无论是研究的思想方法方法还是图像及性质，都有其共通之处。相较于指数函数，对数函数的图象亦有其独特的美感。学习中让学生体会在类比推理，感受图像的变化，认识变化的规律，这是提高学生直观想象能力的一个重要的过程。为之后学习数学提供了更多角度的分析方法。培养学生逻辑推理、数学直观、数学抽象、和数学建模的核心素养。1、理解对数函数的定义，会求对数函数的定义域；2、了解对数函数与指数函数之间的联系，培养学生观察问题、分析问题和归纳问题的思维能力以及数学交流能力；渗透类比等基本数学思想方法。3、在学习对数函数过程中，使学生学会认识事物的特殊性与一般性之间的关系，培养数学应用的意识，感受数学、理解数学、探索数学，提高学习数学的兴趣。
人教A版高中数学必修一对数函数的概念教学设计（2）
对数函数与指数函数是相通的，本节在已经学习指数函数的基础上通过实例总结归纳对数函数的概念，通过函数的形式与特征解决一些与对数函数有关的问题.课程目标1、通过实际问题了解对数函数的实际背景；2、掌握对数函数的概念,并会判断一些函数是否是对数函数. 数学学科素养1.数学抽象：对数函数的概念；2.逻辑推理：用待定系数法求函数解析式及解析值；3.数学运算：利用对数函数的概念求参数；4.数学建模：通过由抽象到具体，由具体到一般的思想总结对数函数概念.重点：理解对数函数的概念和意义；难点：理解对数函数的概念．教学方法：以学生为主体，采用诱思探究式教学，精讲多练。教学工具：多媒体。一、 情景导入我们已经研究了死亡生物体内碳14的含量y随死亡时间x的变化而衰减的规律.反过来，已知死亡生物体内碳14的含量，如何得知死亡了多长时间呢？进一步地，死亡时间t是碳14的含量y的函数吗？
人教A版高中数学必修一函数y=Asin(ωχ+φ)教学设计（1）
本节课选自《普通高中课程标准实验教科书数学必修1》5.6.2节 函数y=Asin(ωx+φ)的图象通过图象变换,揭示参数φ、ω、A变化时对函数图象的形状和位置的影响。通过引导学生对函数y＝sinx到y＝Asin(ωx+φ)的图象变换规律的探索,让学生体会到由简单到复杂、由特殊到一般的化归思想；并通过对周期变换、相位变换先后顺序调整后,将影响图象变换这一难点的突破,让学生学会抓住问题的主要矛盾来解决问题的基本思想方法;通过对参数φ、ω、A的分类讨论,让学生深刻认识图象变换与函数解析式变换的内在联系。通过图象变换和“五点”作图法,正确找出函数y＝sinx到y＝Asin(ωx+φ)的图象变换规律,这也是本节课的重点所在。提高学生的推理能力。让学生感受数形结合及转化的思想方法。发展学生数学直观、数学抽象、逻辑推理、数学建模的核心素养。
人教A版高中数学必修一函数的表示法教学设计（1）
本节课选自《普通高中课程标准数学教科书-必修一》（人教A版）第三章《函数的概念与性质》，本节课是第2课时，本节课主要学习函数的三种表示方法及其简单应用，进一步加深对函数概念的理解。课本从引进函数概念开始就比较注重函数的不同表示方法：解析法，图象法，列表法．函数的不同表示方法能丰富对函数的认识，帮助理解抽象的函数概念．特别是在信息技术环境下，可以使函数在形与数两方面的结合得到更充分的表现，使学生通过函数的学习更好地体会数形结合这种重要的数学思想方法．因此，在研究函数时，要充分发挥图象的直观作用．课程目标 学科素养A.在实际情景中，会根据不同的需要选择恰当的方法（解析式法、图象法、列表法）表示函数；B.了解简单的分段函数，并能简单地应用；1.数学抽象：函数解析法及能由条件求函数的解析式；2.逻辑推理：求函数的解析式；
人教A版高中数学必修一函数的表示法教学设计（2）
课本从引进函数概念开始就比较注重函数的不同表示方法：解析法，图象法，列表法．函数的不同表示方法能丰富对函数的认识，帮助理解抽象的函数概念．特别是在信息技术环境下，可以使函数在形与数两方面的结合得到更充分的表现，使学生通过函数的学习更好地体会数形结合这种重要的数学思想方法．因此，在研究函数时，要充分发挥图象的直观作用．在研究图象时，又要注意代数刻画以求思考和表述的精确性．课本将映射作为函数的一种推广，这与传统的处理方式有了逻辑顺序上的变化．这样处理，主要是想较好地衔接初中的学习，让学生将更多的精力集中理解函数的概念，同时，也体现了从特殊到一般的思维过程．课程目标1、明确函数的三种表示方法；2、在实际情境中，会根据不同的需要选择恰当的方法表示函数；3、通过具体实例，了解简单的分段函数，并能简单应用.
人教A版高中数学必修一函数的零点与方程的解教学设计（2）
本章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。1.了解函数的零点、方程的根与图象交点三者之间的联系.2.会借助零点存在性定理判断函数的零点所在的大致区间.3.能借助函数单调性及图象判断零点个数．数学学科素养1.数学抽象：函数零点的概念；2.逻辑推理：借助图像判断零点个数；3.数学运算：求函数零点或零点所在区间；4.数学建模：通过由抽象到具体，由具体到一般的思想总结函数零点概念.重点：零点的概念，及零点与方程根的联系；难点：零点的概念的形成．
人教A版高中数学必修一集合的基本运算教学设计（1）
本节是新人教A版高中数学必修1第1章第1节第3部分的内容。在此之前,学生已学习了集合的含义以及集合与集合之间的基本关系,这为学习本节内容打下了基础。本节内容主要介绍集合的基本运算一并集、交集、补集。是对集合基木知识的深入研究。在此,通过适当的问题情境,使学生感受、认识并掌握集合的三种基本运算。本节内容是函数、方程、不等式的基础，在教材中起着承上启下的作用。本节内容是高中数学的主要内容，也是高考的对象，在实践中应用广泛，是高中学生必须掌握的重点。A.理解两个集合的并集与交集的含义，会求简单集合的交、并运算；B.理解补集的含义，会求给定子集的补集；C.能使用 图表示集合的关系及运算。 1.数学抽象：集合交集、并集、补集的含义；2.数学运算：集合的运算；3.直观想象：用 图、数轴表示集合的关系及运算。