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.
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.
The theme of this activity is to learn the first aid knowledge of burns. Burns is common in life, but there are some misunderstandings in manual treatment. This activity provides students with correct first aid methods, so as not to take them for granted in an emergency. This section guides students to analyze the causes of scald and help students avoid such things. From the perspective of text structure and collaborative features, the text is expository. Expository, with explanation as the main way of expression, transmits knowledge and information to readers by analyzing concepts and elaborating examples. This text arranges the information in logical order, clearly presents three parts of the content through the subtitle, accurately describes the causes, types, characteristics and first aid measures of burns, and some paragraphs use topic sentences to summarize the main idea, and the level is very clear.1. Guide students to understand the causes, types, characteristics and first aid methods of burns, through reading2. Enhance students’ ability to deal withburnss and their awareness of burns prevention3. Enable students to improve the ability to judge the types of texts accurately and to master the characteristics and writing techniques of expository texts.Guide students to understand the causes, types, characteristics and first aid methods of burns, through readingStep1: Lead in by discussing the related topic:1. What first-aid techniques do you know of ?CPR; mouth to mouth artificial respiration; the Heimlich Manoeuvre
The theme of this section is to learn how to make emergency calls. Students should learn how to make emergency calls not only in China, but also in foreign countries in English, so that they can be prepared for future situations outside the home.The emergency telephone number is a vital hotline, which should be the most clear, rapid and effective communication with the acute operator.This section helps students to understand the emergency calls in some countries and the precautions for making emergency calls. Through the study of this section, students can accumulate common expressions and sentence patterns in this context. 1.Help students accumulate emergency telephone numbers in different countries and learn more about first aid2.Guide the students to understand the contents and instructions of the telephone, grasp the characteristics of the emergency telephone and the requirements of the emergency telephone.3.Guide students to understand the first aid instructions of the operators.4.Enable Ss to make simulated emergency calls with their partners in the language they have learned1. 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.Step1:Look and discuss:Match the pictures below to the medical emergencies, and then discuss the questions in groups.
教 学 过 程教师 行为学生 行为教学 意图时间 *揭示课题 1.3正弦定理与余弦定理. *创设情境 兴趣导入 在实际问题中,经常需要计算高度、长度、距离和角的大小,这类问题中有许多与三角形有关,可以归结为解三角形问题,经常需要应用正弦定理或余弦定理. 介绍 播放 课件 了解 观看 课件 学生自然的走向知识点 0 5*巩固知识 典型例题 例6一艘船以每小时36海里的速度向正北方向航行(如图1-14).在A处观察灯塔C在船的北偏东30°,0.5小时后船行驶到B处,再观察灯塔C在船的北偏东45°,求B处和灯塔C的距离(精确到0.1海里). 解 因为∠NBC=45°,A=30°,所以C=15°, AB = 36×0.5 = 18 (海里). 由正弦定理得 答:B处离灯塔约为34.8海里. 例7 修筑道路需挖掘隧道,在山的两侧是隧道口A和B(图1-15),在平地上选择适合测量的点C,如果C=60°,AB = 350m,BC = 450m,试计算隧道AB的长度(精确到1m). 解 在△ABC中,由余弦定理知 =167500. 所以AB≈409m. 答:隧道AB的长度约为409m. 图1-15 引领 讲解 说明 引领 观察 思考 主动 求解 观察 通过 例题 进一 步领 会 注意 观察 学生 是否 理解 知识 点 40
教 学 过 程教师 行为学生 行为教学 意图时间 *揭示课题 3.4 二项分布. *创设情境 兴趣导入 我们来看一个问题:从100件产品中有3件不合格品,每次抽取一件有放回地抽取三次,抽到不合格品的次数用表示,求离散型随机变量的概率分布. 由于是有放回的抽取,所以这种抽取是是独立的重复试验.随机变量的所有取值为:0,1,2,3.显然,对于一次抽取,抽到不合格品的概率为0.03,抽到合格品的概率为1-0.03.于是的概率(仅求到组合数形式)分别为: , , , . 所以,随机变量的概率分布为 0123P 介绍 播放 课件 质疑 了解 观看 课件 思考 引导 启发学生得出结果 0 10*动脑思考 探索新知 一般地,如果在一次试验中某事件A发生的概率是P,随机变量为n次独立试验中事件A发生的次数,那么随机变量的概率分布为: 01…k…nP…… 其中. 我们将这种形式的随机变量的概率分布叫做二项分布.称随机变量服从参数为n和P的二项分布,记为~B(n,P). 二项分布中的各个概率值,依次是二项式的展开式中的各项.第k+1项为. 二项分布是以伯努利概型为背景的重要分布,有着广泛的应用. 在实际问题中,如果n次试验相互独立,且各次实验是重复试验,事件A在每次实验中发生的概率都是p(0<p<1),则事件A发生的次数是一个离散型随机变量,服从参数为n和P的二项分布. 总结 归纳 分析 关键 词语 思考 理解 记忆 引导学生发现解决问题方法 20
教师姓名 课程名称数学班 级 授课日期 授课顺序 章节名称§2.2 区间教 学 目 标知识目标:1、理解区间的概念 2、掌握区间的表示方法 技能目标:1、能进行区间与不等式的互相转换 2、能在数轴上正确画出相应的区间 情感目标:体会不等式在日常生活中的应用,感受数学的有用性教学 重点 和 难点 重点: 不等式的概念和基本性质 难点: 1、会比较两个整式的大小 2、能根据应用题的表述,列出相应的表达式教 学 资 源《数学》(第一册) 多媒体课件评 估 反 馈课堂提问 课堂练习作 业习题2.1
一、定义: ,这一公式表示的定理叫做二项式定理,其中公式右边的多项式叫做的二项展开式;上述二项展开式中各项的系数 叫做二项式系数,第项叫做二项展开式的通项,用表示;叫做二项展开式的通项公式.二、二项展开式的特点与功能1. 二项展开式的特点项数:二项展开式共(二项式的指数+1)项;指数:二项展开式各项的第一字母依次降幂(其幂指数等于相应二项式系数的下标与上标的差),第二字母依次升幂(其幂指数等于二项式系数的上标),并且每一项中两个字母的系数之和均等于二项式的指数;系数:各项的二项式系数下标等于二项式指数;上标等于该项的项数减去1(或等于第二字母的幂指数;2. 二项展开式的功能注意到二项展开式的各项均含有不同的组合数,若赋予a,b不同的取值,则二项式展开式演变成一个组合恒等式.因此,揭示二项式定理的恒等式为组合恒等式的“母函数”,它是解决组合多项式问题的原始依据.又注意到在的二项展开式中,若将各项中组合数以外的因子视为这一组合数的系数,则易见展开式中各组合数的系数依次成等比数列.因此,解决组合数的系数依次成等比数列的求值或证明问题,二项式公式也是不可或缺的理论依据.
The grammatical structure of this unit is predicative clause. Like object clause and subject clause, predicative clause is one of Nominal Clauses. The leading words of predicative clauses are that, what, how, what, where, as if, because, etc.The design of teaching activities aims to guide students to perceive the structural features of predicative clauses and think about their ideographic functions. Beyond that, students should be guided to use this grammar in the context apporpriately and flexibly.1. Enable the Ss to master the usage of the predicative clauses in this unit.2. Enable the Ss to use the predicative patterns flexibly.3. Train the Ss to apply some skills by doing the relevant exercises.1.Guide students to perceive the structural features of predicative clauses and think about their ideographic functions.2.Strengthen students' ability of using predicative clauses in context, but also cultivate their ability of text analysis and logical reasoning competence.Step1: Underline all the examples in the reading passage, where noun clauses are used as the predicative. Then state their meaning and functions.1) One theory was that bad air caused the disease.2) Another theory was that cholera was caused by an infection from germs in food or water.3) The truth was that the water from the Broad Street had been infected by waste.Sum up the rules of grammar:1. 以上黑体部分在句中作表语。2. 句1、2、3中的that在从句中不作成分,只起连接作用。 Step2: Review the basic components of predicative clauses1.Definition
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。
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
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
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!
The grammar of this unit is designed to review noun clauses. Sentences that use nouns in a sentence are called noun clauses. Nominal clauses can act as subject, object, predicate, appositive and other components in compound sentences. According to the above-mentioned different grammatical functions, nominal clauses are divided into subject clause, object clause, predicate clause and appositive clause. In this unit, we will review the three kinds of nominal clauses. Appositive clauses are not required to be mastered in the optional compulsory stage, so they are not involved.1. Guide the students to judge the compound sentences and determine the composition of the clauses in the sentence.2. Instruct students to try to learn grammar by generalizing grammar rules, controlling written practice, and semi-open oral output.3. Inspire the students to systematize the function and usage of noun clause1.Instruct students to try to learn grammar by generalizing grammar rules, controlling written practice, and semi-open oral output.2.Inspire the students to systematize the function and usage of noun clauseStep1: The teacher ask studetns to find out more nominal clauses from the reading passage and udnerline the nominal clauses.
You have no excuse for not going.你没有理由不去。He was punished for not having finished his homework.他因未完成作业而受到惩罚。2.动词ing形式复合结构由物主代词或人称代词宾格、名词所有格或普通格加动词ing,即“sb./sb.'s+doing”构成。动词ing形式的复合结构实际上是给动词ing形式加了一个逻辑主语。动词ing形式的复合结构有四种形式:①形容词性物主代词+动词ing②名词所有格+动词ing③代词宾格+动词ing④名词+动词ingHer coming to help encouraged all of us.她来帮忙鼓舞了我们所有人。The baby was made awake by the door suddenly shutting.这个婴儿被突然的关门声吵醒了。Can you imagine him/Jack cooking at home?你能想象他/杰克在家做饭的样子吗?无生命名词无论是作主语还是作宾语都不能用第②种形式。Tom's winning first prize last year impressed me a lot.汤姆去年得了一等奖使我印象深刻。Do you mind my/me/Jack's/Jack leaving now?你介意我/杰克现在离开吗?Excuse me for my not coming on time.很抱歉我没能按时来。His father's being ill made him worried.他父亲病了,他很担心。We are looking forward to the singer's/the singer to give us a concert.我们盼望着这位歌手来给我们举办一场演唱会。
一、基本情况 近年来,区政府高度重视农村集体经济发展,紧紧围绕“五水共治”“三改一拆”、美丽乡村建设等重点工作,全力推动农业农村经济转型升级,农村集体经济保持稳步发展,各项经济指标均超过预定的工作目标。 (一)加大财政补助力度。建立村级运转财政补助机制,*年开始连续*年对行政村实行运转补助,累计投入金额*亿元,有效确保了行政村的正常运转。加大对农村地区环境长效管理和农村河道保洁的经费保障力度,每年安排专项资金用于河道路网环境卫生清理,农村生活污水处理、水利等基础设施长效维护,进一步改善和提高了农村地区人居环境。积极落实保障“一事一议”财政奖补项目,*年安排资金*万元支持*个村级公共设施项目建设,加快了基础设施、公共服务向农村覆盖延伸,改善了农民生产生活条件。 (二)实施农村环境整治。*年开始,区政府制定实施三年美丽乡村行动计划,*年对龙坞茶镇*个村实施美丽乡村升级版的整治建设,*年又启动*片*个村、*镇*个村的全域化美丽乡村建设,*、*小集镇综合整治也带动了*等*个村的整治建设。农村地区的环境面貌、设施配套和道路交通得到了有效的提升,为壮大集体经济创造了良好的条件。 (三)开展农村土地流转。从今年年初开始,在*、*地区开展农村土地承包经营权流转工作,累计流转土地约*万亩,并已引进两家规模企业,发展现代农业产业园区。通过现代产业园的引进带动,将提升村集体建设用地和现有房产的潜在价值与经济收益,为村集体经济的进一步发展拓展了渠道。 (四)启动整村连片搬迁。近年来,区政府花大力气、大手笔对*、*部分行政村实施整村搬迁,着力通过引进大项目、大平台,促进农村集体经济发展。*等项目已经确定落户*村和*村,*景区打造和*新区建设将覆盖*村、*村等。通过整村搬迁后大项目的引进,为集体经济的发展壮大带来了前所未有的机遇。
幂函数是在继一次函数、反比例函数、二次函数之后,又学习了单调性、最值、奇偶性的基础上,借助实例,总结出幂函数的概念,再借助图像研究幂函数的性质.课程目标1、理解幂函数的概念,会画幂函数y=x,y=x2,y=x3,y=x-1,y=x 的图象;2、结合这几个幂函数的图象,理解幂函数图象的变化情况和性质;3、通过观察、总结幂函数的性质,培养学生概括抽象和识图能力.数学学科素养1.数学抽象:用数学语言表示函数幂函数;2.逻辑推理:常见幂函数的性质;3.数学运算:利用幂函数的概念求参数;4.数据分析:比较幂函数大小;5.数学建模:在具体问题情境中,运用数形结合思想,利用幂函数性质、图像特点解决实际问题。重点:常见幂函数的概念、图象和性质;难点:幂函数的单调性及比较两个幂值的大小.
【设计意图:先让学生观察、猜想,然后自己想办法“证明”自己的猜想。这样设计,给学生自主思考的时间和空间。在独立思考的基础上,再小组合作,把动脑思考与动手操作有机结合,把独立思考与小组合作有机结合。有利于提高探索活动的实效性。】教师巡视,参与学生的操作和讨论,找出有代表性的几种“证明”方法。3.交流讨论师:差不多了吧?能解释为什么把4个苹果放入3个抽屉,会出现总有一个抽屉中至少放2个苹果这一现象了吗?【学情预设:】第一种:枚举法请学生观察不同的放法,能发现什么?引导学生发现:每一种摆放情况,都一定有一个抽屉中至少放2个苹果。也就是说不管怎么放,总有一个抽屉中至少放2个苹果。第二种:假设法。还有没有用不同的方法来验证把4个苹果放入3个抽屉,总有一个抽屉中至少放2个苹果这一现象吗?
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。
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。
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