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北师大版初中数学九年级下册正多边形和圆说课稿

  • 新人教版高中英语选修2Unit 1 Science and Scientists-Discovering useful structures教学设计

    新人教版高中英语选修2Unit 1 Science and Scientists-Discovering useful structures教学设计

    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

  • 新人教版高中英语选修2Unit 4 Journey Across a Vast Land教学设计

    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-Learning about Language教学设计

    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

    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 1 Science and Scientists-Using langauge教学设计

    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!

  • 新人教版高中英语选修2Unit 2 Bridging Cultures-Discovering useful structures教学设计

    新人教版高中英语选修2Unit 2 Bridging Cultures-Discovering useful structures教学设计

    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.

  • 新人教版高中英语选修2Unit 3 Food and Culture-Discovering useful structures教学设计

    新人教版高中英语选修2Unit 3 Food and Culture-Discovering useful structures教学设计

    The newspaper reported more than 100 people had been killed in the thunderstorm.报纸报道说有一百多人在暴风雨中丧生。(2)before、when、by the time、until、after、once等引导的时间状语从句的谓语是一般过去时,以及by、before后面接过去的时间时,主句动作发生在从句的动作或过去的时间之前且表示被动时,要用过去完成时的被动语态。By the time my brother was 10, he had been sent to Italy.我弟弟10岁前就已经被送到意大利了。Tons of rice had been produced by the end of last month. 到上月底已生产了好几吨大米。(3) It was the first/second/last ... time that ...句中that引导的定语从句中,主语与谓语构成被动关系时,要用过去完成时的被动语态。It was the first time that I had seen the night fact to face in one and a half years. 这是我一年半以来第一次亲眼目睹夜晚的景色。(4)在虚拟语气中,条件句表示与过去事实相反,且主语与谓语构成被动关系时,要用过去完成时的被动语态。If I had been instructed by him earlier, I would have finished the task.如果我早一点得到他的指示,我早就完成这项任务了。If I had hurried, I wouldn't have missed the train.如果我快点的话,我就不会误了火车。If you had been at the party, you would have met him. 如果你去了晚会,你就会见到他的。

  • 新人教版高中英语选修2Unit 3 Food and Culture-Reading and thinking教学设计

    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 5 First Aid-Discovering useful structures教学设计

    新人教版高中英语选修2Unit 5 First Aid-Discovering useful structures教学设计

    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。

  • 国旗下的讲话:阳光大道

    国旗下的讲话:阳光大道

    亲爱的xx、xx:暂别一周,我们又相逢在如诗如画的阳光校园,感觉真好!上周(3月19日至25日),我随xx区首批参加全国中小学校长领导力提升培训班的9名校长,在xx区教师进修校校长助理xx的带领下,在北京师范大学学习深造。专家学者为来自全国160多名的校长上课,更新校长们的办学理念。我们在学习期间参观了北师大实验小学、中关村中学。我在专家培训讲座上,幸运的见到了我的校长偶像——北京第二实验小学校长xx。在xx的多媒体会议室,挂着xx校长的照片。在中关村中学,我见到了最大的校园生物标本陈列室。在那里,陈放着大象、老虎、狮子、猿猴等珍稀动物的标本,令人叹为观止。在北京学习生活期间,我有幸拜访了中央人民广播电台《小喇叭》栏目主持人xx姐姐。她可是我们xx与xx的老朋友了。XX年8月,xx姐姐在节目中播放了xx的原创歌曲。XX年11月,xx姐姐在xx广播电视台《小叮当》栏目主持人xx姐姐的陪同下,深入xx学校与xx小学采访,并把xx、xx的成长故事通过中央台,介绍给全国的小朋友、大朋友。老朋友见面,是不需要过多寒暄的。在xx姐姐热情的招呼下,我兴致勃勃的参观了中央人民广播电台。在专题节目录音棚里,我还煞有介事的坐在话筒前,与xx姐姐模拟了一番主持《小喇叭》的情景,别提有多开心了。临别时,xx姐姐代表《小喇叭》的主任、编辑赠送给我两套音乐光盘和图书资料。一套送给xx,一套送给xx。我希望xx一定要记住xx姐姐给予我们的关爱,好好学习;等到xx姐姐再来xx做客时,我们能以优异的成绩向她汇报。在北京,还有一件令我至今都难忘的事。我和xx学校校长xx,从未在天安门广场观看升国旗仪式。为了弥补遗憾,21日凌晨,我们3点半就打车到天安门广场。在春寒料峭的天安门广场,我们足足等了近两个钟头,才在6点18分准时在天安门广场看到升国旗仪式。威武的国旗班卫士,鲜艳的五星红旗、雄壮的国歌、如潮的观看人群,晨曦辉映下的庄严的天安门城楼,让我过目难忘。记住了,在伟大的共和国首都北京,两位来自xx乡村学校的校长感受到祖国的力量与自己承担的神圣使命。在北京,短短一周的学习,让我的知识行囊变得沉重。这是阳光的恩赐。我以感恩之心,从北京捎带一束生命的阳光,回到杨家。周一回到学校,映入眼帘的是花园般的校园,欢呼雀跃的xx,纯朴热情的xx。回家的感觉真踏实啊!周一下午,xx市教育体育局局长xx来到xx调研。xx局长以他待人真诚随和的人格魅力为xx增添了一道灿烂的阳光。xx局长在xx调研时指出:城乡教育的均衡应该是以教师均横为核心的软硬件一体化均衡为体系的均衡。诸如像xx这类硬件一流,师资欠发展的乡村学校,要重点关注,重点打造。xx局长的调研,涉及当前乡教如何走出发展困境的现实问题,足以让我们暖心。

  • 大班幼儿国旗下讲话

    大班幼儿国旗下讲话

    第一篇:敬爱的老师、亲爱的小朋友们:大家新年好!我是大一班的今天,我很荣幸地站在国旗下讲话。看,我们的国旗冉冉上升,从这一刻起,新的一学期又开始了,你们准备好了吗?新年开学,我想送小朋友们四件新年礼物!第一件礼物的名字叫“快乐”。愿小朋友们每天高高兴兴地上学,快快乐乐地游戏。第二个礼物的名字叫“礼貌”,希望每个小朋友都做有礼貌的好孩子,会问好,会说“再见”,还会讲“谢谢、对不起”这些神奇的话。第三个礼物的名字叫“能干”,小朋友会“自己的事情自己做”,自己睡觉叠被子、自己穿衣穿袜子、自己吃饭擦桌子,做个能干的好孩子。第四个礼物的名字叫“聪明”,我们要养成爱读书爱学习的本领,变成一个真正聪明能干的人。请小朋友好好收藏这四件礼物,都做最棒的孩子。再过半年,我们大班的小朋友就要毕业了,请老师们放心,我们会好好学习,天天向上,给小弟弟小妹妹们做个好榜样!在这里祝愿小朋友们在新学期里学到更多的本领。谢谢大家

  • 月工作计划范本多篇

    月工作计划范本多篇

    一、各领域发展目标语言1、能有意识的注意倾听,能听懂所接受的语言,理解对话和儿童文学作品的主要意思。2、愿意当众表达,表达是自然,从容,自信。3、在充分感知的前提下,能够初步整理已有感知经验,发现事物的简单规律,并用语言表达出来。4、会复述,仿编,创编简单的儿童文学作品,会用多种形式表现并保留自己的作品。

  • 202X销售工作计划多篇

    202X销售工作计划多篇

    1.市场分析,根据市场容量和个人能力,客观、科学的制定出销售任务。2.适时作出工作计划,制定出月计划和周计划。3.注重绩效管理,对绩效计划、绩效执行、绩效评估进行全程的关注与跟踪。4.目标市场定位,区分大客户与一般客户,分别对待,加强对大客户的沟通与合作,用相同的时间赢取的市场份额。5.不断学习行业新知识,新产品,为客户带来实用的资讯,更好为客户服务。6.先友后单,与客户发展良好的友谊,处处为客户着想,把客户当成自己的好朋友,达到思想和情感上的交融。

  • 编辑工作计划多篇

    编辑工作计划多篇

    1.定期召开例会,每周两次(特殊情况灵活变动)。2.对内宣传:以学院及学生会编辑部为平台,及时宣传学院最新动态、重要通知、经典活动等,做到把握动态、及时报道、有效宣传。3.对外宣传:负责将学院学生会各项工作、学院各团支部组织的重要活动、学院优秀青年学子风采、学院实践科研各项学术成果等重要信息及时告知学校广大同学及有关领导。4.记者的管理:记者作为我部宣传工作的重要团体,主要完成我院重大新闻的采集、重要活动的宣传工作。5.目前计划举行征稿活动,组织同学广泛参与,大量投稿,在部里进行筛选。

  • 《我多想去看看》教案

    《我多想去看看》教案

    学情分析:1、学生已经能运用汉语拼音读准字音,认识汉字,有初步的认字基础。本课要求认识的13个生字和会写的4个生字都可以让学生试拼识字。对不易读准的音节教师要指导正音,巩固汉语拼音识字。2、山村的孩子对天安门升旗仪式也许是陌生的,教师要通过看插图、看电视等给学生讲解有关知识。3、如何掌握朗读中的停顿,读好诗歌中的长句是教学的难点。

  • 国旗多美丽教案 3篇

    国旗多美丽教案 3篇

    一、活动导入  出示国旗的图片。师:“五星红旗就是我们的国旗,你感觉怎么样?(美丽、漂亮)  这节课我们就用歌声来赞美国旗吧!”  二、新授歌曲  1.播放《国旗多美丽》音频  师:“我们一起来听一听。”师:“听完了,你有什么感受?”(高兴、自豪……)  2.师:“听得真仔细,现在老师把这首歌唱一唱,听完以后请小朋友告诉我,你在歌里面听到了什么?”(边说边出示图谱)

  • 《贝多芬与<月光奏鸣曲>》教案

    《贝多芬与<月光奏鸣曲>》教案

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