一、课堂教学:1、引导阶段:师:同学们上节课我们学习了的第八课《瓢虫的花衣裳》同学们表现得很好,连隔壁班的老师都夸奖你们呢!同学们要继续努力。我们知道世界每天都在发生着不同的变化,每天都会发生很多有趣的事情。这几天你发生了哪些有趣的事情?生:各抒己见,气氛活跃。师:同学们都很积极,那我先说一下老师有趣的事情,再请同学们说说自己的事情好不好呀?
观察实验视频实验验证师:其实大家完全可以利用身边的器材来验证。实验1、用弹簧秤挂上钩码,然后迅速上提和迅速下放。现象:在钩码被迅速上提的一瞬间,弹簧秤读数突然变大;在钩码被迅速下放的一瞬间,弹簧秤读数突然变小。师:迅速上提时弹簧秤示数变大是超重还是失重?迅速下放时弹簧秤示数变小是超重还是失重?生:迅速上提超重,迅速下放失重。体会为何用弹簧秤测物体重力时要保证在竖直方向且保持静止或匀速实验2、学生站在医用体重计上,观察下蹲和站起时秤的示数如何变化?在实验前先让同学们理论思考示数会如何变化再去验证,最后再思考。(1)在上升过程中可分为两个阶段:加速上升、减速上升;下蹲过程中也可分为两个阶段:加速下降、减速下降。(2)当学生加速上升和减速下降时会出现超重现象;当学生加速下降和减速上升时会出现失重现象;(3)出现超重现象时加速度方向向上,出现失重现象时加速度方向向下。完全失重
1.这节课以实验为依据,采用控制变量的方法进行研究。这一方法今后在电学、热学的研究中还要用到。我们根据已掌握的知识设计实验、探索规律是物体研究的重要方法。2.定义力的单位“牛顿”使得k=1,得到牛顿第二定律的简单形式F=ma。使用简捷的数学语言表达物理规律是物理学的特征之一,但应知道它所对应的文字内容和意义。3.牛顿第二定律概括了运动和力的关系。物体所受合外力恒定,其加速度恒定;合外力为零,加速度为零。即合外力决定了加速度,而加速度影响着物体的运动情况。因此,牛顿第二定律是把前两章力和物体的运动构成一个整体,其中的纽带就是加速度。四、评价方案及说明1、对科学知识与技能的评价要注重科学内容的理解与应用,而不是单纯记忆。技能的评价目标包括观察技能、实验技能等方面。对科学的技能的评价要尽量融合在科学探究过程的情景中。对科学知识的评价主要从两方面,一是根据学生诊断性练习;二是通过学生作业反映学生掌握情况。
新知讲授(一)——随机试验 我们把对随机现象的实现和对它的观察称为随机试验,简称试验,常用字母E表示。我们通常研究以下特点的随机试验:(1)试验可以在相同条件下重复进行;(2)试验的所有可能结果是明确可知的,并且不止一个;(3)每次试验总是恰好出现这些可能结果中的一个,但事先不确定出现哪个结果。新知讲授(二)——样本空间思考一:体育彩票摇奖时,将10个质地和大小完全相同、分别标号0,1,2,...,9的球放入摇奖器中,经过充分搅拌后摇出一个球,观察这个球的号码。这个随机试验共有多少个可能结果?如何表示这些结果?根据球的号码,共有10种可能结果。如果用m表示“摇出的球的号码为m”这一结果,那么所有可能结果可用集合表示{0,1,2,3,4,5,6,7,8,9}.我们把随机试验E的每个可能的基本结果称为样本点,全体样本点的集合称为试验E的样本空间。
人居环境整治工作既是攻坚战,也是持久战,需要我们常抓不懈、久久为功,各位要坚决克服厌战情绪和侥幸心理,牢固树立“逆水行舟,不进则退,慢进也是退”的理念,争分夺秒抓整治、全力以赴促整改,同时要保持工作韧性和连续性,杜绝“三天打鱼两天晒网”,确保长效管理不松懈、严抓共管不放松、清理彻底不反弹。同志们,人居环境整治工作既是一项民生工程,更是一项民心工程,我们既是建设者,更是受益者。希望大家回去后立即部署、迅速行动、精准发力、狠抓落实,让群众切实感受到人居环境整治的热潮,以时不我待的紧迫感、舍我其谁的使命感、造福一方的责任感推动农村人居环境整治工作再上新台阶,共同把这一事关农业农村高质量发展和群众幸福生活的大事、好事抓好抓实。
三要继续强化督查检查,建立长效机制镇人居办要常态化开展督查检查,深入一线发现问题,做到早发现、早制止、早处置,防止小问题变成大麻烦。要明确部门责任、村(街)责任,责任到人,对思想上不重视、行动上不积极、整改上不彻底的单位和个人进行通报,对在上级考核中出现严重问题的将严肃处理。人居环境整治工作既是攻坚战,也是持久战,需要我们常抓不懈、久久为功,各位要坚决克服厌战情绪和侥幸心理,牢固树立“逆水行舟,不进则退,慢进也是退”的理念,争分夺秒抓整治、全力以赴促整改,同时要保持工作韧性和连续性,杜绝“三天打鱼两天晒网”,确保长效管理不松懈、严抓共管不放松、清理彻底不反弹。同志们,人居环境整治工作既是一项民生工程,更是一项民心工程,我们既是建设者,更是受益者。
老师们、同学们:大家好!今天我国旗下讲话的题目是《学雷锋精神,做友善之人》。春意融融的阳春三月即将到来,神州大地的每一个角落,尤其是学校都将再次掀起一股“学雷锋”的春风,这股永吹不停的“春风”是人们对往年学雷锋活动的总结和后续,又是雷锋精神的深化和发扬。雷锋,这个光辉的名字,犹如一颗明亮的星,为亿万人所景仰、所熟知。因为它成为一种不朽的象征——象征着我们民族勤劳、简朴、关心他人,克已奉公的优良传统;同时它成为一种永恒的启示——启示着我们一代又一代青少年奋发向上、不竭努力,为实现人类美好的理想而奉献出每一分光和热。毛主席说过“一个人做一件好事不难,要做一辈子好事,却很难很难”雷锋叔叔就是一个这样的人。他心中时刻装着祖国,装着他人,雷锋叔叔说过“人的生命是有限的,我要把有限的生命投入到无限的为人民服务当中去”他用年轻的生命实践了自己的诺言。
老师们,同学们,大家早上好!今天我国旗下讲话的主题是:争做文明学生,共筑美好校园。大家知道做什么事情不简单、做什么事情不平凡吗?把每一件简单的事情做好,就是不简单;把每一件平凡的事情做好,就是不平凡。我的一个好朋友,每次在食堂吃完饭,都会一边把盘子递给收餐具的阿姨,一边礼貌地对她说声“谢谢”。收餐具的阿姨通常忙得顾不上回答——她们正以最快的速度整理着几只手同时甩在桌上的餐盘。不过也有时候,阿姨会冲我们笑笑,或者开心地说“不用谢”,然后继续麻利地工作。我不知道这一句简单的“谢谢”能有多大的作用,不过我想,至少这个阿姨的一天可以因此多一丝愉快,我们的校园里可以多一点文明的正能量。
尊敬的老师、领导,亲爱的同学们:大家早上好!今天我发言的题目是“珍惜粮食,做勤勉节俭的xx学子”。关于这个题目,我的发言有三点。第一,珍惜粮食,从我做起。“谁知盘中餐,粒粒皆辛苦”告诉了我们粮食来之不易的道理。学校领导很早就倡导全校师生开展“光盘行动”:盘里不剩菜,碗里不剩米。无论对于老师还是学生,这个标准都不能打任何折扣。可是现在,我们仍然可以看到有同学浪费食物的现象,吃不完的米饭随意倒掉,而且很“大方”、不犹豫。试想,我们学校近300名师生就餐,每人每顿少浪费一粒米,这数额积累下来,至少可以让一个饱受饥饿之苦的人解决温饱问题,这样下来,又可以节约资源求得学校更好的发展,何乐而不为呢?都说温饱不忘饥寒,增产不忘节约。我们处在衣食无忧的好时代,学校也处在稳步发展的关键时期,我们要从自身做起,珍惜粮食,杜绝浪费。
一、 教学目标根据教学大纲的要求以及本节课的地位与作用,结合高一学生的认知特点确定教学目标如下:学习目标:1、复习巩固对数函数的图像及性质2、运用对数函数的性质比较两个数的大小能力目标:1、 培养学生运用图形解决问题的意识即数形结合能力2、学生运用已学知识,已有经验解决新问题的能力3、 探索出方法,有条理阐述自己观点的能力
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.
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
? 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?
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?
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?
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 ?
一、 引入课题1. 复习初中所学函数的概念,强调函数的模型化思想;2. 阅读课本引例,体会函数是描述客观事物变化规律的数学模型的思想:(1)炮弹的射高与时间的变化关系问题;(2)南极臭氧空洞面积与时间的变化关系问题;(3)“八五”计划以来我国城镇居民的恩格尔系数与时间的变化关系问题3. 引导学生应用集合与对应的语言描述各个实例中两个变量间的依赖关系;4. 根据初中所学函数的概念,判断各个实例中的两个变量间的关系是否是函数关系.
二、学情分析:学生目前对形变和弹力有一定的感性认识但是不够深入;知道支持力、压力都是弹力,但是不能够概括产生的原因。理性思维还没有达到一定的层次,要想理解弹力这一抽象概念还有一定困难。因此我采取引导、启发的教学方式。
活动共分四个环节,在开始部分我设计了在音乐的伴奏下玩木头人的游戏,一开始老师和小朋友一起听音乐四散做自己喜爱的动作,音乐一停,老师问:谁是木头人?小朋友回答:我是木头人,同时摆好一个造型不动,老师检查。第二环节的游戏:我最爱运动是本节活动的重点和难点所在,重点是通过让幼儿模仿运动造型,发展幼儿身体动作的协调性;培养幼儿积极参加游戏的主动性并训练他们在行进间躲避同伴,不碰撞的能力。其中在行进间躲避同伴不碰撞是一个难点。为什么要设计这样一个难点呢?我们在生活中常常可以看到孩子们在游玩的时候拼命往前冲,好象整个操场只有他一个人,这样是非常危险的,教会孩子一些躲避的方法就可以避免碰撞事故的发生。在游戏的前面我设计了一个模仿运动员的小环节,目的是让幼儿展示一下自己已经掌握的运动项目,同时也可以大家相互交流一下,看看别人都了解了什么,这样既给孩子一个展示的机会也提供了一个学习的机会。新纲要告诉我们:“培养幼儿对体育活动的兴趣是幼儿园体育的重要目标”在设计游戏内容的时候,我就想用什么形式既能培养幼儿对体育活动的兴趣又能锻炼幼儿的能力,增强幼儿参与的积极性及竞争意识,于是我想到“竞赛”。大家请看,这是教室场地的示意图,中间的五个小圆圈是竞赛点,里面分别写上“我、最、爱、运、动”五个字,外圈是准备区。游戏开始,小朋友和老师一起站在大圈上,听音乐逆时针向前跑,音乐一停,教师问:谁最爱运动,幼儿一边回答:我最爱运动,一边去抢占五个圈,每一个圈里只能站一个人。最先到达圈内的小朋友每人要做一个运动项目的造型,而且不能与别人的重复。再由其他小朋友选出一名做得最好,游戏继续进行,每一轮的优胜者,到最后一起进行决赛。
1、我先讲故事给幼儿听,让他们理解朋友的含义老师出示与朋友合影的照片,讲一讲与好朋友在一起的情景,趣事。(突出一起分享主题)幼儿讨论:好朋友在一起应该怎样?懂得好东西一起分享。介绍自己的小物品,尝试与朋友分享。今天小朋友们都把自己喜欢的小物品带来了,请你给大家说说你的物品是什么?怎样玩?你们带来的小物品太好玩了,你的朋友也想玩一玩,快去找个朋友交换着玩,这样你就会有更多个玩具了。播放背景音乐,引导幼儿自由结伴交换物品进行分享。老师注意引导幼儿能和更多的小朋友进行分享,进一步体会到分享的意义。讲一讲分享中发生的趣事,体验分享的乐趣。你和谁交换的,你们是怎样玩的?心里有什么感觉?有不愉快的事情发生吗?你们是怎样解决的?
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