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人教版新课标高中物理必修2圆周运动教案2篇
《匀速圆周运动》为高中物理必修2第五章第4节．它是学生在充分掌握了曲线运动的规律和曲线运动问题的处理方法后，接触到的又一个美丽的曲线运动，本节内容作为该章节的重要部分，主要要向学生介绍描述圆周运动的几个基本概念，为后继的学习打下一个良好的基础。人教版教材有一个的特点就是以实验事实为基础，让学生得出感性认识，再通过理论分析总结出规律，从而形成理性认识。教科书在列举了生活中了一些圆周运动情景后，通过观察自行车大齿轮、小齿轮、后轮的关联转动，提出了描述圆周运动的物体运动快慢的问题。二、教学目标1．知识与技能①知道什么是圆周运动、什么是匀速圆周运动。理解线速度的概念；理解角速度和周期的概念，会用它们的公式进行计算。②理解线速度、角速度、周期之间的关系：v=rω=2πr／T。③理解匀速圆周运动是变速运动。④能够用匀速圆周运动的有关公式分析和解决具体情景中的问题。
关于3月22日世界水日国旗下讲话
3月18日国旗下讲话让地球母亲水嫩美丽亲爱的老师，同学们：大家好！我们都知道，人活着离不开水，当一个人滴水不进时，也就意味着生命的结束。我们的祖先是聪明的，他们造出了“活”这个字。人要存“活”就得有水，当人类的舌头舔不到水时，人类还能存活吗？显然，我们的祖先在造这个字之前，就已经意识到水对人类生存的重要性。水，是人的生命之源!春暖花开，雨水唤醒了万物；炎炎夏季，河水灌溉了庄稼；金色秋天，泉水清凉了大地；皑皑冬日，茶水温暖了心田。四季轮回，水在我们生活中扮演着多么重要的角色!水不仅孕育了生命，创造了生机勃勃的大自然，也维持着生命的不断延续与发展。人类文明诞生于海洋，发祥于大江大河。我们中华民族五千年优秀的文化，也是在黄河流域、长江流域发展并得以壮大的。可见，人类社会是一个以水为基础所维持的一个体系。倘若没有水，那这个体系也将随着坍塌，生命最终也会因此而枯竭！
关于3月22日世界水日国旗下讲话
3月18日国旗下讲话让地球母亲水嫩美丽亲爱的老师，同学们：大家好！我们都知道，人活着离不开水，当一个人滴水不进时，也就意味着生命的结束。我们的祖先是聪明的，他们造出了“活”这个字。人要存“活”就得有水，当人类的舌头舔不到水时，人类还能存活吗？显然，我们的祖先在造这个字之前，就已经意识到水对人类生存的重要性。水，是人的生命之源!春暖花开，雨水唤醒了万物；炎炎夏季，河水灌溉了庄稼；金色秋天，泉水清凉了大地；皑皑冬日，茶水温暖了心田。四季轮回，水在我们生活中扮演着多么重要的角色!水不仅孕育了生命，创造了生机勃勃的大自然，也维持着生命的不断延续与发展。人类文明诞生于海洋，发祥于大江大河。我们中华民族五千年优秀的文化，也是在黄河流域、长江流域发展并得以壮大的。可见，人类社会是一个以水为基础所维持的一个体系。倘若没有水，那这个体系也将随着坍塌，生命最终也会因此而枯竭！生命是离不开水的！但是长期以来，在人们的思想观念中，一直存在着这样一个误区：认为水是取之不尽、用之不竭的资源，可以肆意浪费掉。大家会想：只要水龙头一开，晶莹剔透的水就会自动流出来，多么方便啊！浩荡的长江就在我们身边流淌，我爱用多少就用多少，反正也一直用不完？同学们，水真的怎么用也用不完吗？宇航员在太空遥望我们的地球时，看到的是一个晶莹璀璨的蓝色水球。
3月22日世界水日国旗下讲话
1977年召开的“联合国水事会议”，向全世界发出严重警告：水不久将成为一个深刻的社会危机，石油危机之后的下一个危机便是水。1993年1月18日，第四十七届联合国大会作出决议，确定每年的3月22日为“世界水日”。下文是3月22日世界水日国旗下讲话3则，欢迎查阅。老师们、同学们，早上好!明天就是“世界水日”了。今天国旗下讲话的主题就是——节约用水。大家一定都看过这样一则公益广告吧：电视画面上有一个水龙头，正在艰难地往外滴着水，滴水的速度越来越慢，最后水就枯竭了。然后画面上出现了一双眼睛，从眼中流出了一滴泪水。随之出现的是这样一句话：“如果人类不珍惜水，那么我们能看到的最后一滴水将是我们自己的眼泪。”从前，人们头脑中总有一个定式——水是取之不竭的，随用随取。随着人口的与日俱增和工农业的飞速发展，人类需水量也随之增长，水紧张的现实日渐突出。目前，我国水资源总量为万亿立方米，位居世界第六位，但人均占有量仅居世界第88位，人均水资源仅占世界平均水平的四分之一，属世界贫水国之一。
一年级下册朗文1B 介词主题教案
知识与技能To teach the words in the house : sofa table chair box cupboard shelf . Pron. on in under near
北师大初中数学九年级上册利用一元二次方程解决面积问题2教案
四．知识梳理谈谈用一元二次方程解决例1实际问题的方法。五、目标检测设计1．如图，宽为50cm的矩形图案由10个全等的小长方形拼成，则每个小长方形的面积为（ ）．【设计意图】发现几何图形中隐蔽的相等关系．2．镇江)学校为了美化校园环境，在一块长40米、宽20米的长方形空地上计划新建一块长9米、宽7米的长方形花圃．（1）若请你在这块空地上设计一个长方形花圃，使它的面积比学校计划新建的长方形花圃的面积多1平方米，请你给出你认为合适的三种不同的方案．（2）在学校计划新建的长方形花圃周长不变的情况下，长方形花圃的面积能否增加2平方米？如果能，请求出长方形花圃的长和宽；如果不能，请说明理由．【设计意图】考查学生的审题能力及用一元二次方程模型解决简单的图形面积问题．
北师大初中数学九年级上册利用一元二次方程解决面积问题1教案
∴此方程无解．∴两个正方形的面积之和不可能等于12cm2.方法总结：对于生活中的应用题，首先要全面理解题意，然后根据实际问题的要求，确定用哪些数学知识和方法解决，如本题用方程思想和一元二次方程的根的判定方法来解决．三、板书设计列一元二次方程解应用题的一般步骤可以归结为“审，设，列，解，检，答”六个步骤：(1)审：审题要弄清已知量和未知量，问题中的等量关系；(2)设：设未知数，有直接和间接两种设法，因题而异；(3)列：列方程，一般先找出能够表达应用题全部含义的一个相等关系，列代数式表示相等关系中的各个量，即可得到方程；(4)解：求出所列方程的解；(5)检：检验方程的解是否正确，是否保证实际问题有意义；(6)答：根据题意，选择合理的答案．经历列方程解决实际问题的过程，体会一元二次方程是刻画现实世界中数量关系的一个有效数学模型．通过学生创设解决问题的方案，增强学生的数学应用意识和能力.
2022年山东省东营市中考语文真题（解析版）
夫所为求福而辞祸者，以福可喜而祸可悲也。人之所欲无穷，而物之可以足吾欲者有尽，美恶之辨战乎中，而去取之择交乎前。则可乐者常少，而可悲者常多。是谓求祸而辞福。夫求祸而辞福，岂人之情也哉？……是以美恶横生，而忧乐出焉，可不大哀乎！
2022年山东省东营市中考语文真题（原卷版）
余自钱塘移守胶西②，释舟楫之安，而服车马之劳；去雕墙之美，而蔽采椽之居③；背湖山之观，而适桑麻之野。始至之日，岁比不登④，盗贼满野，狱讼充斥；而斋厨索然，日食杞菊。人固疑余之不乐也。处之期年，而貌加丰，发之白者，日以反黑。予既乐其风俗之淳，而其吏民亦安予之拙也。于是治其园圃，洁其庭宇……为苟全⑤之计。而园之北，因城以为台者旧矣，稍葺而新之。
XX年秋季中小学开学第一周国旗下讲话稿
XX年秋季中小学开学第一周国旗下讲话稿_四篇1)XX年秋季初中开学国旗下讲话稿老师们、同学们：大家好!今天是开学第一天，满怀新学期的喜悦，带着对积极向上的校园生活的向往，我们又走到了一起。我首先代表学校，向新入学的一年级学生表示热烈祝贺与诚挚的欢迎!同学们，新学年走进校园，你有没有发现，我们的校园里又有了新的变化——那就是学校东西两边的围墙上布置了“临浦一小名人墙”和“三色工程系列图片”。我们希望每一位一小的学子了解一小的历史，知道自己的责任。临浦一小建于1904年,百年的砥砺成长，百年的春华秋实，学校积淀了丰厚的人文文化。历史演义作家蔡东藩、音乐教育家桑松青等先贤曾在一小任教。北大著名教授、历史学家柴德赓，中国共青团创始人俞秀松，著名学者喻守真都是我们的校友，他们的人生理想曾在这里启航。近年来，一小正在着力打造“守真”教育品牌，取名“守真”，一为纪念校友、著名的注释家喻守真，追慕其做学问之真;二则蕴含着我们的办学追求，即“志在求真，恪守不违”。我们追求平实、真实的学校教育管理，要求老师“传真知，动真情，做真师”，要求学生“诚实、朴实、踏实”，我们的底气是来自一小百年辉煌的办学成绩和优良的教风——民国时期一小获省教育厅褒奖“学风纯美冠南乡”
XX年5月17日国旗下讲话稿：珍爱生命安全第一
老师们、同学们：最近一个时期以来，一些地方的学校安全事故陆续出现，而且重大恶性事故增多。教育部通报了近期各地一些学校发生的安全事故：月日清晨，山西省长治市沁源县二中组织初二、初三两个年级的学生在公路上跑操，在学生返校途中，一辆东风带挂货车由于司机疲劳驾驶，直接撞向跑操学生队伍，酿成了一起特大交通事故，目前事故共造成名学生和名教师死亡，名学生受伤；月日，四川省巴中市通江县广纳镇中心小学晚自习课下课时，发生拥挤踩踏事故，造成名学生死亡、名学生受伤；月日，两名犯罪嫌疑人将湖南衡阳市南岳区小学学生文某以其母亲生病为由从学校骗出，随后向其家长勒索赎金。月日民警将歹徒抓获时，发现这位小学生已经死亡。这些血的教训，究其原因，一方面是当前整体社会安全工作严峻，社会治安情况复杂，一些事故是“天灾人祸”所致；另一方面是由于一些学校安全工作松懈麻痹，责任不落实，工作不到位所造成，还有一部分是由于一些学生安全意识、防范意识不强，缺乏自护、自救的能力而导致伤害事故的发生。
XX年9月开学第一周国旗下讲话稿范文
做学习的主人老师们，同学们：大家好，今天我演讲的题目是“做学习的主人”!同学们，大夫的职责是救去世扶伤，老师的职责是教书育人，那学生的职责呢?对，勤劳学习!是啊，每一小我私家都有本身的职责。作为学生的你们也不破例，学的职责便是学习。学习便是学生的根木任务，自打你走进校园的那一刻起，你就负担起学习的任务。由于只有学习才气使你变的睿智，唯有知识才气使你日益壮大。你们是国家的将来和盼望。你们的自身本质直接决定着故国的运气，于是我们的先进梁齐超就颁发了“少年智，则国智，少年富，则国富，少年强，则国强”的“少年中国说”。以是学习对如今的你们来说，责无旁待!怎样学习呢?首先要主动学习，自主学习，做学习的主人!学习的主体是自己。
XX年春季开学第一周国旗下讲话发言稿
欢庆愉快的寒假过去，新的学期已经来到，那么XX年春季开学第一周国旗下讲话发言稿怎么写，以下是小编精心整理的相关内容，希望对大家有所帮助！XX年春季开学第一周国旗下讲话发言稿 尊敬的各位老师，亲爱的同学们：大家上午好!春回大地，万物复苏，到处洋溢着春天的气息。今天，我们在这里隆重举行兴洪中学XX年春季开学典礼，首先我向辛勤工作的全体教职员工表示崇高的敬意和衷心的感谢!向努力学习并取得进步的同学们表示真诚的祝贺!过去的一学期里，我们辛勤工作、刻苦学习，收获了累累硕果：高三模拟考试，我们能够冲刺本科的人数远远大于教育局下达给我们学校的指标，元月份揭晓的音乐、美术专业考试，我们兴洪中学的民本过关百分率、高分人数都处于泗洪领先地位，期末考试很多年级的学科均分仅次于县中，或者名列前茅，新高一年级一大批学生在中考分数滞后情况下，通过一个学期的努力，挤入了全县500名、1000名的行列，我们在宿迁市日语基地申报答辩中取得了第一名的好成绩，日语教研组被评为“宿迁市优秀教研组”，高中数学、英语备课组被评为“宿迁市优秀备课组”，冯万娟老师被评为宿迁市优秀备课组长，所有这些都受到了教育主管部门的肯定，事实充分证明我们兴洪中学的老师是优秀的，我们兴洪中学的同学们是努力的。
新人教版高中英语必修3Unit 1 Festivals and Celebrations-Reading for Writing教学设计一
The topic of this part is “Write about your festival experience”.During the Listening and Speaking and Talking, students are just asked to say out their festival experiences such as the Spring Festival, Mid-autumn Day, but this part students will be asked to write down their own festival experiences. During the reading part, it introduces the Naadam Festival in Inner Mongolia Autonomous Region, which can give students a good example to imitate. Students not only learn the festival, but touch and feel the Inner Mongolian’s character, the spirit and cultural atmosphere, which can help students form the cultural awareness and learn to enjoy and value the diversity of Chinese culture.Concretely, the dairy tells the experience that the author spent the Naadam Festival in Inner Mongolia Autonomous Region with his/her friend. The structure is clear. In the opening paragraph, it introduces the topic of the Naadam Festival and the whole feeling. Then it introduces the items of the festival like the ceremony, wrestling and horse racing. Finally, it summarizes this experience. Because this part is a travel journal, we must guide students pay more attention to these details: 1. use the first person. 2. use the past tense to tell the past thing and use the present or future tense to describe the scenery. 3. use the timeline to tell the development. 4. be careful for the author’s psychology, emotion and feeling, etc.1. Read quickly to get main idea; read carefully to get the detailed information about Naadam Festival.2. Learn the structure of the reading article and language.3. Write an article about a festival experience4. Learn to use the psychology, emotions and feeling in the writing.1. Write an article about a festival experience.2. Use the structure of the reading article and language.
新人教版高中英语必修3Unit 4 Space Exploration-Listening&Speaking&Talking教学设计一
Listening and Speaking introduces the topic of “talking about how to become an astronaut”. This period is aimed to inform students some details about the requirements of being an astronaut. Students can be motivated and inspired by the astronauts. Teachers ought to encourage students to learn from them and let them aim high and dream big.Listening and Talking introduces the theme of "talk about life in space". This part also informs students more details about life in space and can inspire students to be curious about this job. 1. Guide students to listen for numbers concerning dates, years and ages etc2. Cultivate students' ability to talk about how to become an astronaut and life in space ; 3. Instruct students to use functional sentences of the dialogue such as “ first of all, I am not sure, so what might be .. I guess.. I wonder…I am curious…)appropriately.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to guess the meaning of words in listening; discuss with their peers how to become a qualified astronaut and describe the life in space.Part 1: Listening and SpeakingStep 1: Lead inPredictionThe teacher can ask students to predict what the listening text is about by looking at the pictures.About how to become an astronaut./the requirements of an astronautStep 2: Then, play the radio which is about an interview a. And after finishing listening for the first time, the students need to solve the following tasks.
新人教版高中英语必修3Unit 4 Space Exploration-Reading and Thinking教学设计一
Q4: What is the function of the International exploration ?Having astronauts from different countries on boardQ5: What can you learn from Para 4 ?China has made great achievements in exploring spaceQ6: What is the attitude to the space exploration ?SupportiveStep 6 Post reading---RetellPeople have always wanted to learn more about space. Before the mid-20th century, most people felt (1)_________ (travel) into space was an impossible dream. However, (2)____ the help of scientists, peoplesucceeded in realizing their dream (3) _________ (explore) space. On 4 October 1957, the Sputnik 1 satellite (4) ____________(launch) by the USSR. (5) ________________ scientists try to make sure nothing goes wrong, accidents can still happen. These disasters made everyone(6)___________(disappoint), but people still believe in the importance of (7) ________(carry) on space exploration. In 2003, China became the third country to (8)_____________ (independent) send humans into space. Then Shenzhou 6 and 7 completed (9)____ second manned orbit and the first Chinese spacewalk. In spite of the difficulties, scientists hope future (10)__________ (discovery) will not only enable us to understand the universe but also help us survive well into the future.Answers: 1. travelling 2. with 3. to explore 4. was launched 5. Although6. disappointed 7. carrying 8. independently 9. a 10. discoveriesStep 6 Post reading---Critical thinkingQ1: What do you think of the space exploration ? I think it is beneficial to us. Through further study of space, people will make full use of it in the future, such as the space experiments by Wang Yaping in Tian Gong 1.Q2: If you are determined to be an astronaut, what should you prepare at present ?First of all, I should study hard to get a related college degree. Besides, I must keep mental and physical healthy.Step 7. HomeworkTry to summarize the structure of the article by a mind map.
新人教版高中英语必修3Unit 4 Space Exploration-Reading For Writing教学设计一
另一方面，其余的人反对这个计划，因为它可能会导致一些不好的影响。7.I hold the belief that space exploration not only enable us to understand how the universe began but also help us survived well into the future.我坚信探索太空不仅能够使我们了解宇宙的起源而且能够帮助我们更好地走进未来。8.I think we should spend more time and money exploring space so as to provide new and better solutions to people's shortterm and longterm problems.为了给人类的短期和长期问题提供更新和更好的解决方法，我认为我们应该花更多的时间和金钱来探索太空。9．From my point of view，it is wrong of young people to depend on their telephones too much，which may do harm to both their physical and mental health.在我看来，年轻人过度依赖手机是不对的，因为它们可能会对他们的身心健康都有害。最近你班同学就“人类是否应该进行宇宙探索”这个问题进行了激烈的讨论。有人认为，探索宇宙不仅让人类更好地了解宇宙的发展，还可以用来指导农业生产，以及把一些探索太空的高新技术用于现实生活；也有一些人认为探索太空花掉了大量的人力物力；影响了人们的生活水平。请你根据以下情况写一篇报告并发表自己的观点。注意：1.写作内容应包括以上全部要点，可适当发挥，使上下文连贯；
新人教版高中英语必修3Unit 5 The Value of Money-Reading and Thinking教学设计一
Everybody wants to get wealth.In today’s material world,making money or becoming wealthy symbolizes a person’s success and capability. Many people just make every effort, pay any price to attain greater wealth. With money,they can buy nice, large apartments in nice neighborhood. With money they can own luxurious cars. Wealth seems to bring all happiness in life.But is wealth the only road to happiness? Not really. There are many things in the world, which are beyond the means of money, such as friendship, love, health and knowledge. People are so preoccupied with struggling for money that they have no time or would not take the time to form or maintain friendship. What happiness can they feel living as lonely miserable creatures without love or friends in the world even if they accumulate tremendous wealth?In my opinion, people can’t do anything without money, but money is not everything. What money will bring you depends on your personal belief and goal in life. If you are kind enough to help others, especially the poor, money is a good thing to you. With it, you can do much more for the benefit of people and your country, and it will add to your own happiness. If you want money just for your own needs, you’ll never be satisfied or happy. In a word,you should have money spent for more people. Only then can money be the source of your happiness.Step 8 Homework4 students in a group, one acts Roderick, one Oliver, one servant and the fourth one acts Henry Adams, then listen to the tape, pay more attention to the difference between American English and British English in pronunciation, stress, tone.
新人教版高中英语必修3Unit 5 the value of money-Reading For Writing教学设计一
【参考范文】Narrator：(Henry is smiling as he leaves the restaurant. As he is walking down the street, he sees a sign for a place that cuts hair. He decides to get it cut. )H＝Henry；B＝Barber；R＝rude manH：Good afternoon, I'd like to get a 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. (In comes the rude man. )R：Hey you there. I need a haircut quickly. Can you do me straightaway?B：All right, then, get in the chair and I'll see what I can do. R：Thank you. (sits down in one of the barber's chairs)H：Excuse me, but I was here first. Aren't you going to do my hair first?B：This man's in a hurry. H：Well so am I！I insist that you cut my hair first. B：OK, but I'll have to be quick. This gentleman is waiting. H：Thank you. (They both become quiet. 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. R：You're that Mr Adams! Well，I'm glad I waited or I might never have known it was you. B：Why, Mr Adams, please don't worry！(wearing a big smile) Nothing to worry about！Nothing at all!Please come back any time, even if you only need too little hairs cut！It will be my honour to serve you!
人教版高中语文必修3《蜀道难》教案2篇
【明确】“一夫当关，万夫莫开”言剑阁有易守难攻的险要形势，暗示中央朝廷的部队很不容易打进来，因而野心家可以据险发动叛乱，“化为狼与豺”，搞地方割据。如果割据势力之间出现矛盾冲突，难免要发生混战，结果必定是“杀人如麻”。诗人这番预言在十多年后就得到了证实：从上元二年到大历初即有段子璋、徐知道、崔旰等人相继发动叛乱。诗人的意图是要严防野心家发难。诗人从剑阁的险要引出对政治形势的描写。他化用西晋张载《剑阁铭》中形胜之地，匪亲勿居的语句，目的在于劝人引以为鉴戒，警惕战乱的发生，并联系当时的社会背景，揭露了蜀中豺狼的磨牙吮血，杀人如麻，这既是描写蜀道猛兽，又是影射政治黑暗的双关语句，表达了对国事的忧虑与关切，为诗篇增加了现实的内涵、深厚的意蕴。唐天宝初年，太平景象背后正潜伏着危机，后来发生的安史之乱，证明诗人的忧虑是有现实意义的。
