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人教版新课标高中物理必修2向心加速度说课稿
d．某物体沿直线向东运动，原来的速度是5m/s，2s后速度减小到3m/s，求2s内物体速度变化。④如何探究物体作匀速圆周运动时，在Δt时间内的速度变化？分析：有了同一直线上速度变化的铺垫后，讨论物体做匀速圆周运动速度的变化就比较自然了，为了给向心加速度方向的学习打好基础，可以通过小组协作，进一步完成下列思考题，使同学们认识到：时间间隔起短，速度变化的方向起接近半径方向。（多媒体屏幕投影）a．物体沿半径为1m的轨道做匀速圆周运动，线速度大小为，求1s内物体速度变化并画出1s内速度变化的示意图。b．分别求出上题中物体在0.5s、0.25s内速度变化并画出相应的示意图。由于没有办法直接利用实验来验证速度变化的方向，所以，我们采用提供思考题的方法，引导同学在合作学习、自主探究中完成。有了速度变化的研究为铺垫，加速度的方向问题就迎刃而解了。
人教版新课标高中物理必修2行星的运动说课稿
一、教材分析行星的运动选自人教版普通高中物理必修2第六章第1节。本节教学既是前面《运动的描述》和《曲线运动》内容的进一步的延伸和拓展，又能为后面学习万有引力定律做铺垫。在本章中占有较为重要的地位，具有承前启后的作用。同时该节内容也涉及大量物理史实、贴近学生生活和联系社会实际的事实，可进一步培育学生的科学情感、精神和发展观。（一）教学目标 1．知识与技能（1）知道地心说和日心说的基本内容。（2.）掌握理解开普勒三大定律的内容，并能应用。（3）理解人们对行星运动的认识过程是漫长复杂的，真理是来之不易的。2．过程与方法通过托勒密、哥白尼、第谷·布拉赫、开普勒等几位科学家对行星运动的不同认识，了解人类认识事物本质的曲折性并加深对行星运动的理解。3．情感、态度与价值观（1）澄清对天体运动神秘、模糊的认识，掌握人类认识自然规律的科学方法。（2）感悟科学是人类进步不竭的动力。
人教版新课标高中物理必修2宇宙航行说课稿2篇
了解了第一宇宙速度及其意义之后，继续提出问题，让学生思考：如果卫星的发射速度大于第一宇宙速度7.9km/s ，会出现什么情况呢？先让学生们大胆猜想，然后再向学生们介绍 卫星发射速度大于第一宇宙速度后的几种可能情况，引出第二宇宙速度和第三宇宙速度，让学生对第二、第三宇宙速度及其意义做定性了解。并通过演示Flash课件，帮助学生理解、加深学生印象。在学生对人造卫星的原理及发射卫星的速度条件有了初步了解后，接下来引导学生对卫星的运动规律作进一步的探索。实际上卫星并不是沿地表水平发射的，而是用火箭多次加速送到一定的高度的轨道后，再沿以地心为圆心的圆周的切线运行的。让学生继续深入思考：卫星在不同高度绕地球运行时的速度怎么求呢？将卫星送入低轨道和高轨道所需的速度都一样么？如果把不同轨道上的卫星绕地球的运动都看成是匀速圆周运动，引导学生利用已学的万有引力和圆周运动的相关知识，探究卫星绕地球的运行规律。
人教版新课标高中物理必修2重力势能说课稿2篇
（四）、弹性势能（据课时情况，可以让学生自学）生活中还有一些物体既没有运动也没有很大的高度却同样“储存”着能量，哪怕它只是孩童手里的玩具（图片：弹弓）。张紧的弓一撒手就会对箭支做功改变它的动能，松弛的弓有这样的本领吗？同样是弓前者具有能量而后者没有，那么什么情况下物体才具有这种能量呢？张紧的弓在恢复原状的过程会对外做功，但是拉断的弓还能有做功的本领吗？1．定义：物体由于发生弹性形变而具有的能量叫做弹性势能。2．弹性势能的大小与哪些因素有关呢？3、势能由相互作用的物体的相对位置决定的能量。重力势能：由地球和物体间相对位置决定。弹性势能：由发生形变的各部分的相对位置决定。(五).反馈练习1. 物体在运动过程中，克服重力做功50J， 则( )A．重力做功为50JB．物体的重力势能一定增加50JC．物体的重力势能一定减少50JD．重力做功为-50J
初中英语人教版九年级全册《Unit 3 Could you please tell me where the restrooms are》课标分析说课稿
学习策略的第五级标准分为认知策略和调控策略。认知策略方面，标准描述有：根据需要进行预习；在学习中集中注意力；在学习中善于记要点；在学习中积极思考，主动探究，善于发现语言的规律并运用规律举一反三。对于调控策略，其标准是这样描述的：明确自学习英语的目标；积极探索适合自己的英语学习方法；经常与老师和同学交流学习体会。
人教版新课标高中物理必修1牛顿第三定律说课稿2篇
问：为什么会出现这样的情况，男女生之间的拉力存在着怎样的大小关系？进一步求证这两个力的大小关系经过共同讨论，得方案：把两个弹簧秤勾在一起，重现拔河比赛，分三种情况进行。（通过摄像头把弹簧秤的读数放大）两弹簧称勾在一起拉，处于静止不动时（即拔河比赛，双方处于僵持状态）两弹簧称勾在一起拉，并向一方运动（即比赛绳子被拉向一方时的状态）3、两弹簧称勾在一起拉，一方方向慢慢改变（两力方向始终在一条直线上）实验结论：两弹簧称的读数的变化总是相同的，大小相等，方向相反。得到牛顿第三定律：追问：既然两个力大小相等，那么拔河比赛为什么还存在胜负之分？讲清作用力与反作用力作用的受力物体不同，并和学生讨论如何做才会获胜。回应课前问题：“以卵击石”为什么鸡蛋碎？
人教版新课标高中物理必修1时间和位移说课稿2篇
研究一种物理现象，总是要先从现象的描述入手。机械运动作为自然界最简单和最基本的运动形态，它所描述的是物体空间位置随时间变化的情况。因此，本节学习描述质点做机械运动需要时刻、时间间隔和位移等概念。相当一部分高一学生在具体过程中难以区别时刻和时间间隔。另外，由于思维的定式，在第一次接触既要考虑大小又要考虑方向的问题时，会因不适应造成学习困难。所以，区别“路程与位移”“时刻和时间间隔”是教学的重难点所在。学习这些内容的过程与方法对学习速度和加速度可以起到奠定基础的作用。教学的对象是高一的学生，这一时期的学生处在好奇善问、创新意识强烈的青少年期。对于生活中出现的各种现象具有浓厚的兴趣。但他们的思维还停留在简单的代数运算阶段，对于矢量和矢量运算的理性认识几乎没有。且对生活中出现的时间、时刻、时间间隔等不能做出很好的区分，对时常提及的路程、距离等形成了模糊的前概念。
人教版新课标高中物理必修2能量守恒定律与能源说课稿3篇
（3）内陆和中西部城镇主要以煤和火电为主；广大农村和边远地区大多正从使用农作物秸秆等生物能源。（4）人均能源资源不足。我国是世界第三大能源生产国和第二大能源消费国，而我国能源短缺，特别是油气资源短缺已成为制约我国经济发展的重要因素。相关数据——煤炭、石油和天然气的人均资源占有量只有95t，世界平均值为209t，约是世界人均值的1/2；我国人均石油可采储量3t，世界平均值为28t，约为世界平均值的1/10。我国人均能源消费量不足1.2吨标准煤，居世界89位，不足世界人均能源消费水平的一半，仅占发达国家的1/5～1/10。其中人均消费650kg标准煤，是世界平均额的95%；人均消费石油相当145kg标准煤，为世界平均数的16.8%；人均消费天然气相当17.7kg标准煤，为世界平均数的3.9%；人均消费电力501.5kWh，为世界平均水平的25%。（5）是能源消费结构不合理，突出存在着一低两高：即电能消费比例低，非商品生物能源消费量高，一次性商品能源消费中原煤消费比重高。原煤消费达到75%，远高于26.2%的世界平均水平。
人教版新课标高中物理必修2万有引力理论的成就说课稿2篇
2、计算天体的质量首先观看多媒体展示天体的运动，同时解释什么是环绕天体？什么是中心天体？接着展示相关问题：①应用万有引力定律求解天体质量的基本思路是什么?②求解天体质量的方程依据是什么?教师点拨，学生分组，合作探究，学生代表发言设计说明通过创设问题情境，进行由浅至深，由易到难的问题式教学，以激发学生的积极思维活动；通过探究让学生建立物理模型，分组讨论，求解中心天体质量的三种表达式。在进行已有知识的迁移时重点重复环绕和被绕的关系，使学生准确抓住模型中的各个星体所担任的角色。通过小组合作学习，运用类比归纳法得出正确结论，掌握求解中心天体质量的基本思路，以达到突出教学重点的目的。3、发现未知天体通过2个视频进行了解设计说明这部分通过视频主要激发学生相信科学，学习科学，让学生感知人类探索宇宙的梦想，激发学生探索科学奥秘的热情，培养热爱科学的情感，促使学生树立献身科学的人生价值观。
人教版新课标高中物理必修2追寻守恒量—能量说课稿2篇
［小结］师：下面同学们概括总结本节所学的内容。请一个同学到黑板上总结，其他同学在笔记本上总结，然后请同学评价黑板上的小结内容。 （学生认真总结概括本节内容，并把自己这节课的体会写下来、比较黑板上的小结和自己的小结，看谁的更好，好在什么地方。） 生：本节课我们通过伽利略理想斜面实验，分析得出了能量以及动能和势能的概念，从能量的相互转化角度认识到，在动能和势能的相互转化过程中，能的总量保持不变，即能量是守恒的。通过这节课的学习，使我们建立起了守恒的思想。 点评：总结课堂内容，培养学生概括总结能力。 教师要放开，让学生自己总结所学内容，允许内容的顺序不同，从而构建他们自己的知识框架。［布置作业］课后讨论 P3“问题与练习”中的问题。［课外训练］以竖直上抛的小球为例说明小球的势能和动能的转化情况。在这个例子中是否存在着能的总量保持不变？
人教版新课标高中物理必修2圆周运动说课稿3篇
设计意图：通过设疑、讨论及学生的亲身体验与教师的引导，得到描述圆周运动快慢的两个物理量，也就成功的打破了学生在认识上的思维障碍，突破了物理概念教学的难点。在解决线速度和角速度的问题之后，我将引领学生学习匀速圆周运动的概念以及匀速圆周运动中线速度、角速度的特点。并引出匀速圆周运动中周期、转速的知识。为了加深学生对线速度、角速度与半径关系的认识，我设计了第三个学生体验活动：四名学生以我为圆心做圆周运动，四名学生始终并列，这时里圈同学走动不急不慢，而外圈同学则要小跑。通过学生的活动，不难发现在角速度相同的情况下，半径越大的线速度也越大。定性的得到了线速度、角速度与半径的关系。接下来让学生利用所学知识推导线速度、角速度与半径的关系。设计意图：这样就通过设疑、学生猜想、体验、推导的方式得到了结论，突破了本节课的难点即线速度、角速度与半径的关系。
用字母表示数说课稿
知识技能目标： 1、借助生活中的实例，体会用字母表示数的必要性和重要性。 2、在具体的情境中能利用字母表示数进行表达和交流。知道字母所表示的不同取值范围。 过程方法目标： 1、在探索现实世界数量关系的过程中，体验用字母表示数的简明性。
《锐角三角函数--正切》说课稿
（一）自学质疑看书 解决下面两个问题：1．下列图中的两个台阶哪个更陡？你是怎么判断的？ 答：图 的台阶更陡，理由 2．除了用台阶的倾斜角度大小外，还可以如何描述台阶的倾斜程度呢？
反比例函数说课稿
二)重点、难点及成因分析：重点：反比例函数概念、图象和性质。概念是确定解析式的前提，图象和性质是其灵魂，是数形结合思想方法的具体表现，故是本节的重点。难点：画反比例函数的图象。它的图象有两个分支，且其变化趋势又非直线，学生初次接触，会感到有些困难。(
说话要算数 说课稿
说教材本课时的教学要点是引导学生分析失信的原因，找到解决的方法，并懂得和做到对自 己守信。数师可以按照教材内容的编排顺序进行教学，先设计讨论活动，引导学生针对具体的失信行为分析原因，井能对症下药,找出相应的解决方法，然后转向“对自己说话算数" 的内容。对此，教师可以通过数材中“张明对自己说话算数”的内容，引导学生思考并讨论 为什么要对自己守信，从而让他们认识到无论是对别人还是对自己都旻言行一致、说话算数.教师旻强调对自己说话算数主要靠自觉和白律，并让学生学习史多的守信方法,并运用在自己的守信实跋中。学情分析诚信对学生来说是老生常谈，在学校或是日程的生活中，老师、长辈总会要求孩子能做到诚实，不说谎。但实际上，很多孩子乱下保证，却常常做不到，导致失信，但在他们眼中这并不算是不诚信。因此我们需要在根本上改变他们的这一认识与看法。通过角色扮演在帮别人改正说话不算数的毛病过程中，自 纠身上存在的失信问题并改正。
新人教版高中英语必修3Unit 1 Festivals and celebrations-Discovering Useful Structure教学设计
4.That was an experience that frightened everyone. →That was _____________________. 答案：1. taking 2. being discussed 3. in the reading room 4. a frightening experienceStep 6 The meaning and function of V-ing as the predicative动词-ing形式作表语，它通常位于系动词后面，用以说明主语“是什么”或“怎么样”一种表示主语的特质、特征和状态, 其作用相当于形容词; 另一种具体说明主语的内容, 即主语等同于表语, 两者可互换。The music they are playing sounds so exciting. 他们演奏的音乐听起来令人激动。The result is disappointing. 结果令人失望。Our job is playing all kinds of music. 我们的工作就是演奏各种音乐。Seeing is believing. 眼见为实。Step 7 Practice1. It is ________(amaze) that the boy is able to solve the problem so quickly.2. Buying a car is simply _______(waste) money. 3. Please stop making the noise—it’s getting ________(annoy). 4. complete the passage with the appropriate -ing form.La Tomatina is a festival that takes place in the Spanish town Bunol every August. I think many food festivals are __________ because people are just eating. however, this festival is _________ because people don't actually eat the tomatoes. Instead, they throw them at each other! the number of people ________ part in this tomato fight, can reach up to 20,000, and it is a very __________ fight that lasts for a whole hour. The _______ thing is how clean Bunol is after the tomatoes are washed away after the fight. this is because the juice form tomatoes is really good for making surfaces clean!答案：1. amazing 2. wasting 3. annoying4. boring interesting taking exciting amazing
新人教版高中英语必修3Unit 1 Festivals and Celebrations-Listening &Speaking＆Talking教学设计
The theme of this section is “Talk about festival activities and festival experiences”.Festival and holiday is a relaxing and interesting topic for students. This part talks about the topic from the daily life of students’. In the part A ---Listening and Speaking, there are three conversations among different speakers from three countries(Japan, Rio and China), where the speakers are participating in or going to participate in the festivals and celebrations. So listening for the relationship among them is a fundamental task. Actually, with the globalization and more international communication, it is normal for Chinese or foreigners to witness different festivals and celebrations in or out of China. In the Conversation 1, a foreign reporter is interviewing a Japanese young girl who just had participated in the ceremony of the Coming-of-Age Day on the street and asking her feeling about the ceremony and the afterwards activities. Conversation 2, Chinese girl Li Mei is witnessing the Rio Carnival for the first time, and her friend Carla gives her some advice on the costumes which enables her to match with the carnival to have a good time. Conversation 3, a Chinese guide is showing a group of foreign visitors around the Lantern Festival and introducing the customs of the festival to them. The three conversations have a strong vitality and insert the festival and cultural elements from different countries. So perceiving the festivals and cultures from different countries is the second task. At the same time, the scripts also insert the targeted grammar --- v-ing as attributive and predicative, which students can perceive and experience in a real context and make a road for the further study. That is the third task. In the Part B--- Listening and Talking, the theme is “Talk about festival experience”, which is the common topic in our daily conversations. During the conversation, Song Lin, a Chinese student, asked Canadian friend Max about how to spend Christmas. In the conversation, Song Lin talked about experience and the feelings during the Chinese Spring Festival, during which there are not only some enjoyable things but some unpleasant things. After the listening, perhaps students find there are some similarities between Christmas and the Chinese Spring Festival as there are some differences in the origins and celebrations. For example, people always visit friends and relatives, decorate their houses, have a big dinner together, chat and give presents to each other.
新人教版高中英语必修3Unit 1 Festivals and Celebrations-Reading for writing教学设计二
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.
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 2 Morals and Virtues-Discovering Useful Structure教学设计
1. 表示时间。Hearing these stories, I’m skeptical about the place. = When I heard these stories. . . 2. 表示原因。Not knowing his address, I can’t send this book to him. = Because/Since/As I don’t know his address. . . 3. 表示结果。His father died, leaving him a lot of money. =. . . and left him a lot of money4. 表示条件。Going straight down the road, you will find the department store. = If you go straight down the road. . . 5. 表示让步。Being tired, they went on working. =Although they were tired. . . 6. 表示行为方式、伴随情况或补充说明。He lay on the grass, staring at the sky for a long time. =. . . and stared at the sky for a long time注意：非谓语动词作状语时, 如所提供的动词不能和句子中的主语保持一致, 动词-ing形式必须有自己的逻辑主语, 通常由名词或代词来担任, 这就是独立主格结构。The last bus having gone, we had to walk home. (having gone的逻辑主语是the last bus, 而不是we)Weather permitting, the football match will be played on Friday. (permitting的逻辑主语是time, 而不是the football match)Step 7 Practice1. ________(study) hard, you are sure to get first prize. 2. People use plastic in their daily life, _______(leave) large amounts of waste. 3. ________(work) hard at your lessons, you are to succeed. 4. The old man, ____________(work) abroad for twenty years, is on the way back to his motherland. 5. ______________(finish) his homework, he was playing on the playground. Answers: 1. Studying 2. leaving 3. Working 4.having worked 5. Having finishedStep 8 HomeworkFinish the homework on Page 22.
