-
人教版高中政治必修3文化与经济、政治教案2篇
1．在激烈的国际竞争中，美国为首“巴统”在对中国出口高科技产品的问题上采取了种种限制措施，以避免西方发达国家的高科技技术和设备流人中国。面对发达国家的技术封锁，我们应该( )A．加速我国对外开放的步伐B．尽快改善与西方发达国家的关系C．努力提高自身的科技水平，增强本国的综合国力D．立足于自力更生，努力开发所有的高科技技术，以免受制于人答案：C解析：在当今和未来的世界，经济是基础，科技是龙头。因而，发展经济和科学技术是世界大多数国家最关心的问题。各国之间的竞争越来越多地转向经济和科技领域。各国都已经清楚地认识到，能否在科技发展上取得优势，增强以经；济和科技为基础的综合国力，最终将决定本国在国际上的地位。受各种主客观条件的限制，任何国家都不可能开发出自己所需要的所有技术，国家之间必须加强技术交流，互通有无，共同发展。“巴统”对我国进行技术出口方面的限制是基于其敌视中国的战略需要。为了打破西方国家的对我国的技术限制，我国必须从自身出发，提高自身的科技水平。
人教版高中政治必修3建设社会主义精神文明教案
(2)伟大的意义：这些精神文明创建活动，是人民群众“移风易俗”、改造社会的伟大创造，也是人民群众自我教育、自我提高的有效途径。各具特色的精神文明创建活动，使人们在自觉参与的过程中思想感情得到熏陶，思想觉悟得到启发，精神生活得到充实，道德意识得到增强，道德境界得到升华。这对整个中华民族的精神面貌，正在产生不可估量的积极影响。◇点拨：“相关链接”描述了青年志愿者活动，引导学生感悟其精神，升华道德境界，增强参与意识。(3)必然的选择：投身于社会主义精神文明建设的伟大实践，做新时期中国先进文化的传播者和建设者，是当代中国青年成长、成才的必然选择。◇拓展延伸：在群众性精神文明创建活动中涌现出的先进人物和英雄模范，像孔繁森、张海迪、徐洪刚、韩素云、李国安、徐虎、李素丽等，在全社会起到了良好的示范作用；提出的一些响亮口号，如“从我做起，从现在做起”“岗位学雷锋，行业树新风”“单位做个好职工，社会做个好公民，家庭做个好成员”等，不断激励着人们。
人教版高中政治必修3感受文化影响精品教案
（三）合作探究、精讲点拨 【情景导入，感受文化的影响】用多媒体展示教材“活动探究”P13的内容（图文并茂）情景问题：① 从这两幅画面中发现了哪些文化上的区别？你还能举出更多的事例吗？② 面对我们祖先创造的精美文化产品，人们的感慨，既有差异，又有共同之处。你能否解释这是为什么？(学生讨论、回答)情景问题：让学生阅读“活动探究”情景，带着这些问题去思考、合作、探究，在学生交流、探究的基础上，分组派代表完成这些问题，突出了学生的主体地位。设计意图：1、开门见山的方式引导学生进行新的学习探究活动，创设问题情景，引起悬念，吸引学生的注意力，激发学生的学习兴趣和探究欲望。2、通过自主探究，让学生感悟到道理越辩越明，促使学生存疑、质疑，从而产生强烈的探究欲望。
人教版高中政治必修4认识运动，把握规律精品教案
一、教材分析 《认识运动 把握规律》是人教版高中政治必修四第4章第2框的教学内容，主要学习运动和规律二、教学目标1．知识目标：运动的含义、相对静止的含义、规律的含义、物质和运动的辨证关系、运动和静止的辨证关系2．能力目标： 锻炼学生理论联系实际的能力，培养学生正确认识世界本质，并能够自觉按照客观规律办事的能力3．情感、态度和价值观目标：通过学习运动和静止的辨证关系，使学生懂得辨证唯物主义在承认运动绝对性的同时还承认相对静止的重要作用，从而承认世界是可知的，在生活、学习和工作中增强认识世界和改造世界的勇气和信心，反对离开相对静止谈运动，避免形而上学的相对主义和诡辩论的错误三、教学重点难点规律的客观性四、学情分析本框题的内容比较抽象，不易理解，所以讲解时需要详细。教师指导学生借助生活中的一些常识来学习本课内容
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.
新人教版高中英语必修3Unit 2 Morals and Virtues-Listening &Speaking＆Talking教学设计
Example:One day, a poor boy who was trying to pay his way through school by sending newspapers door to door found that he only had one dime(一角）left. He was so hungry that he decided to beg for a meal at the next house.However, he lost his nerve when a lovely young woman opened the door. Instead of a meal he asked for a drink of water. She thought he looked hungry so she brought him a large glass of milk. He drank it slowly, and then asked, “How much do I owe you?” “You don’t owe me anything,” she replied, “Mother has taught me never to accept pay for a kindness.” “Then I thank you from the bottom of my heart.” With these words, Howard Kelly left that house.Years later the woman became badly ill and was finally sent to the hospital in a big city. Dr. Howard Kelly, now famous, was called in. When he heard the name of the town she came from, a strange light filled his eyes. Dressed in his doctor’s clothes, Dr. Kelly went into her room and recognized her at once. From that day on, he gave special attention to her, and decided to do his best to save her life.At last the woman was saved. Dr. Kelly asked the business office to pass the final bill to him. He looked at it and then wrote something on the side. The bill was sent to the woman’s room. She was afraid to open it because she was sure that it would take the rest of her life to pay for it off. Finally she looked, and the note on the side of the bill caught her attention. She read these words: “Paid in full with a glass of milk, Dr. Howard Kelly.” Tear of joy flooded her eyes.
新人教版高中英语必修3Unit 2 Morals and Virtues-Reading for Writing教学设计
1. 这个寓言是一个关于一位国王古寓言。 The fable is an old fable about a king.2.作者用这个故事让读者对于社区的问题负有个人责任的必要印象深刻。The author used the story to impress upon readers with the need to take personal responsibility for problems in the community.3. 这个故事十分成功的实现了它的目的。The story was quite successful in achieving its purpose.Step 7 WritingPlease write a review of the story according the outline above.The fable is an old fable about a king who thought his people are lazy, so he put a large stone in the middle of the road and hides and waited to see if anyone will try to move it.The author used this story to impress upon readers with the need to take personal responsibility for problems in the community. The story was quite successful in achieving its purpose, and I liked it because it had a clear moral.However, while the moral of the story is clear, the actions of the king seemed pointless to me, because none of the characters in the story learnt anything. For this reason, I think there are better stories that can be used to impress upon people with the need for personal responsibility.Step 8 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1. Does the writer give a short description of the story ?2. Does the description include the most important details of the story ?3. Does the writer give his or her opinion about the character or their actions ?4. Is the review well-organised ? 5. Does the writer use the -ing form as the adverbial correctly in the writing ?6. Are there any grammar, spelling, or punctuation errors ?Step 9 HomeworkPut up your revised draft in the classroom or read it to your class.
新人教版高中英语必修3Unit 3 Diverse Cultures-Reading for Writing教学设计
The topic of this part is “Describe a place with distinctive cultural identity”.This section focuses on Chinese culture by introducing Chinatown, whose purpose is to show the relationship between the Chinese culture and American culture. The Chinese culture in Chinatown is an important part of American culture. Chinatown is an important window of spreading Chinese culture and the spirit homeland of oversea Chinese, where foreigners can experience Chinese culture by themselves.Concretely, the title is “Welcome to Chinatown!”, from which we can know that the article aims at introducing Chinatown. The author used the “Introduction--Body Paragraph--Conclusion” to describe the people, language, architecture, business, famous food and drinks and people’s activities, which can be a centre for Chinese culture and shows its unique charm.1. Read quickly to get main idea; read carefully to get the detailed information.2. Learn the characteristics of writing and language.3. Learn to introduce your own town according to the text.4. Learn to correct others’ writing.1. Learn the characteristics of writing and language.2. Learn to introduce your own town according to the text.Step 1 Lead in ---Small talkIn the reading part, we mentioned the Chinatown of San Francisco. How much do you know about Chinatown of San Francisco ?Chinatown is a main living place for Chinese immigrants, where you can see many Chinese-style buildings, costumes, operas, restaurants, music and even hear Chinese.Step 2 Before reading ---Predict the contentWhat is the writer’s purpose of writing this text ? How do you know ?From the title(Welcome to Chinatown) and some key words from the text(tourist, visit, visitors, experience), we can know the purpose of the text is to introduce Chinatown and show the relationship between Chinese culture and American culture.
新人教版高中英语必修3Unit 4 Space Exploration-Discovering Useful Structure教学设计
The theme of the section is “Describe space facts and efforts to explore space”. Infinitives are one of non-finite verbs, as the subjects, objects, predicative, attributes and adverbials. This unit is about space exploration, which is a significant scientific activity, so every scientific activity has strong planning. Therefore, using the infinitives to show its purpose, explanations or restrictions is the best choice.1. Learn the structure, functions and features of infinitives.2. Learn to summarize some rules about infinitives to show purpose and modify.3. Learn to use infinitives in oral and writing English. 1. Learn the structure, functions and features of infinitives.2. Learn to summarize some rules about infinitives to show purpose and modify.3. Learn to use use infinitives in oral and writing English.Step 1 Lead in---Pair workLook at the following sentences and focus on the italicized infinitives. In pairs, discuss their functions. 1. I trained for a long time to fly airplanes as a fighter pilot..(作目的状语)2. As we all know, an astronaut needs to be healthy and calm in order to work in space..(作目的状语)3. First of all, you must be intelligent enough to get a related college degree..(作目的状语)4. Some scientist were determined to help humans realise their dream to explore space..(作定语)5. On 12 April 1961, Yuri Gagarin became the first person in the world to go into space..(作定语)Summary:1. 不定式的结构：to+do原形。2. 分析上面的句子，我们知道在描述太空探索时，动词不定式不仅可以用来表目的，还可以用来作定语，表修饰。
新人教版高中英语必修3Unit 4 Space Exploration-Listening&Speaking＆Talking教学设计二
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
新人教版高中英语必修3Unit 5 The Value of Money-Listening &Speaking＆Talking教学设计
4. A：We’d like to have someone to say a word at the beginning to welcome the group.B：↙Who?A：We thought that you or Dr.Johnson might do it.B用降调说Who，其意思是问，对方想让谁在开场时致欢迎词。Step 6 Pronunciation---Practice1. Listen to the short conversation and mark the intonation with ↗, ↙ or ↙, ↗. Then discuss with a partner what they intend to convey by using different intonation.Owner: You know what ?↗ It’s a million-pound bank note↙.Waiter 1: Really ?↗(question)Waiter 2: Really !↙(unbelievable and surprised)Waiter 3: Really ?!↙↗(first question then surprised)2. Listen to the conversations. Underline the parts that are stressed and mark the intonation. Then talk about the implied meanings of the responses with different intonations. Listen again and repeat.1) Henry: It’s a nice suit.Owner: Oh, it’s perfect!↙(The intonation means it is very suitable for Henry.)2) Henry: Well, that’s very kind of you.Owner: Kind, sir ?↗(what you said is not right) No, it’s kind of you. You must come whenever you want and have whatever you like. Just having you sit here is a great honour !!↙(welcome you to come again)3)Henry:Well, to be honest, I have none. Oliver:(happily) What luck!(excited) Brother↗, what luck!↙(It means “Didn’t you hear it?”)Henry: Well, it may seem lucky to you but not to me!↗(angry) If this is your idea of some kind of joke, I don’t think it’s very funny. Now if you’ll excuse me, I ought to be on my way.↙(If so, I would leave.)Roderick: Please don’t go↙...(hope Henry can wait for a moment)Part B Viewing and Talking---Describe people’s changing attitudes in a film clipStep 1 Before-listening---Tell the filmYou are going to watch part of the film The Million Pound Bank Note. Look at these photos and guess what happens in the film.
新人教版高中英语必修3Unit 5 The Value of Money-Reading for Writing教学设计二
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 ?
新人教版高中英语必修3Unit 5 The Value of Money-Discovering Useful Structures导学案
4．They were going to find someone to take part in their bet when they saw Henry walking on the street outside.[归纳]1．过去将来时的基本构成和用法过去将来时由“would＋动词原形”构成，主要表示从过去某一时间来看将要发生的动作(尤其用于宾语从句中)，还可以表示过去的动作习惯或倾向。Jeff knew he would be tired the next day.He promised that he would not open the letter until 2 o'clock.She said that she wouldn't do that again.2．表示过去将来时的其他表达法(1)was/were going to＋动词原形：该结构有两个主要用法，一是表示过去的打算，二是表示在过去看来有迹象表明将要发生某事。I thought it was going to rain.(2)was/were to＋动词原形：主要表示过去按计划或安排要做的事情。She said she was to get married next month.(3)was/were about to＋动词原形：表示在过去看来即将要发生的动作，由于本身已含有“即将”的意味，所以不再与表示具体的将来时间状语连用。I was about to go to bed when the phone rang.(4)was/were＋现在分词：表示在过去看来即将发生的动作，通常可用于该结构中的动词是come，go，leave，arrive，begin，start，stop，close，open，die，join，borrow，buy等瞬间动词。Jack said he was leaving tomorrow.
双曲线及其标准方程教学设计人教A版高中数学选择性必修第一册
∵在△EFP中,|EF|=2c,EF上的高为点P的纵坐标,∴S△EFP=4/3c2=12,∴c=3,即P点坐标为(5,4).由两点间的距离公式|PE|=√("(" 5+3")" ^2+4^2 )=4√5,|PF|=√("(" 5"-" 3")" ^2+4^2 )=2√5,∴a=√5.又b2=c2-a2=4,故所求双曲线的方程为x^2/5-y^2/4=1.5.求适合下列条件的双曲线的标准方程.(1)两个焦点的坐标分别是(-5,0),(5,0),双曲线上的点与两焦点的距离之差的绝对值等于8;(2)以椭圆x^2/8+y^2/5=1长轴的端点为焦点,且经过点(3,√10);(3)a=b,经过点(3,-1).解:(1)由双曲线的定义知,2a=8,所以a=4,又知焦点在x轴上,且c=5,所以b2=c2-a2=25-16=9,所以双曲线的标准方程为x^2/16-y^2/9=1.(2)由题意得,双曲线的焦点在x轴上,且c=2√2.设双曲线的标准方程为x^2/a^2 -y^2/b^2 =1(a>0,b>0),则有a2+b2=c2=8,9/a^2 -10/b^2 =1,解得a2=3,b2=5.故所求双曲线的标准方程为x^2/3-y^2/5=1.(3)当焦点在x轴上时,可设双曲线方程为x2-y2=a2,将点(3,-1)代入,得32-(-1)2=a2,所以a2=b2=8.因此,所求的双曲线的标准方程为x^2/8-y^2/8=1.当焦点在y轴上时,可设双曲线方程为y2-x2=a2,将点(3,-1)代入,得(-1)2-32=a2,a2=-8,不可能,所以焦点不可能在y轴上.综上,所求双曲线的标准方程为x^2/8-y^2/8=1.
抛物线及其标准方程教学设计人教A版高中数学选择性必修第一册
本节课选自《2019人教A版高中数学选择性必修第一册》第二章《直线和圆的方程》，本节课主要学习抛物线及其标准方程在经历了椭圆和双曲线的学习后再学习抛物线，是在学生原有认知的基础上从几何与代数两 个角度去认识抛物线.教材在抛物线的定义这个内容的安排上是：先从直观上认识抛物线，再从画法中提炼出抛物线的几何特征，由此抽象概括出抛物线的定义，最后是抛物线定义的简单应用.这样的安排不仅体现出《课程标准》中要求通过丰富的实例展开教学的理念，而且符合学生从具体到抽象的认知规律，有利于学生对概念的学习和理解.坐标法的教学贯穿了整个“圆锥曲线方程”一章，是学生应重点掌握的基本数学方法 运动变化和对立统一的思想观点在这节知识中得到了突出体现，我们必须充分利用好这部分教材进行教学
人教版高中政治必修4真正的哲学都是自己时代精神上的精华精品教案
一、教材分析 《真正的哲学都是自己时代精神上的精华》是人教版高中政治必修四第3章第1框的教学内容，主要学习哲学与时代的关系。二、教学目标1．知识目标：识记哲学是时代的精神上的精华；理解哲学与时代的关系。2．能力目标：培养学生运用哲学理论观察、分析、处理社会问题的能力，增强学生的时代感。3．情感、态度和价值观目标：培养学生与时俱进的思想品质，让学生关注时代、关注现实、关注生活，逐步树立科学的世界观、人生观、价值观 。三、教学重点难点哲学与时代的关系。四、学情分析本框题的内容比较抽象，不易理解，所以讲解时需要详细。教师指导学生借助历史知识进行理解。五、教学方法1．教师启发、引导，学生自主阅读、思考，讨论、交流学习成果。2．学案导学：见后面的学案。3．新授课教学基本环节：预习检查、总结疑惑→情境导入、展示目标→合作探究、精讲点拨→反思总结、当堂检测→发导学案、布置预习
古诗词诵读《拟行路难（其四）》说课稿 2021-2022学年统编版高中语文选择性必修下册
（一）导入新课“时势造英雄”，恶劣的环境造就名诗名篇。正因如此，怀才不遇于古人是恒久的情感素材。同学们，请大家回忆我们学过哪些抒发作者怀才不遇的诗词？（二）解释题意拟：仿照，模拟《行路难》，是乐府杂曲，本为汉代歌谣，晋人袁山松改变其音调，创制新词，流行一时。 鲍照《拟行路难》共十八首，歌咏人世的种种忧虑，寄寓悲愤，今天我们学习的是其中第四首。（三）作者简介、写作背景门阀制度之下，“上品无寒门，下品无世族”，出身寒微的文人往往空怀一腔热忱，却报国无门，不得不在壮志未酬的遗恨中坐视时光流逝。即使跻身仕途，也多是充当幕僚、府掾，备受压抑，在困顿坎坷中徒然挣扎，只落得身心交瘁。
古诗词诵读《桂枝香?金陵怀古》说课稿（一） 2021-2022学年统编版高中语文必修下册
王安石，字介甫，号半山。北宋著名政治家、思想家、文学家、改革家，唐宋八大家之一。欧阳修称赞王安石：“翰林风月三千首，吏部文章二百年。老去自怜心尚在，后来谁与子争先。”传世文集有《王临川集》、《临川集拾遗》等。其诗文各体兼擅，词虽不多，但亦擅长，世人哄传之诗句莫过于《泊船瓜洲》中的“春风又绿江南岸，明月何时照我还。”且有名作《桂枝香》等。介绍之后设置这样的导入语：今天我们共同走进王安石，一起欣赏名作《桂枝香·金陵怀古》。(板书标题)(二)整体感知整体感知是赏析文章的前提，通过初读，可以使学生初步了解将要学到的基本内容，了解文章大意及思想意图，使学生对课文内容形成整体感知。首先，我会让学生根据课前预习，出声诵读课文，同时注意朗读的快慢、停顿、语调、轻重音等，然后再播放音频，纠正他们的读音与停顿。其次，我会引导学生谈谈他感受。学生通过朗读，能够说出本词雄壮、豪放、有气势，有对景物的赞美和对历史的感喟。
古诗词诵读《虞美人（春花秋月何时了）》说课稿 2021-2022学年统编版高中语文必修上册
（一）说教材 《虞美人》选自高中语文统编版必修上册·古诗词诵读。《虞美人》是词中的代表作品，是李煜生命中最为重要的一首词作，极具艺术魅力，对于陶冶学生的情操，丰富和积淀学生的人文素养意义非凡。（二）说学情总体来说，所教班级的学生基础不强，学习意识略有偏差，在学习过程中需要教师深入浅出，不断创造动口、动手、动脑的机会，他们才能更好地达成教学目标。（三）说教学目标根据教学内容和学情分析，确定如下教学目标（1）探究这首词的内涵，了解李煜及其创作风格。（2）通过对本词的品析，提高词的鉴赏能力。（3）通过对比阅读，体会李煜词 “赤子之心” 、“以血书者”的特色，体味其深沉的亡国之恨和故国之思。
人教A版高中数学必修一两角和与差的正弦、余弦和正切公式教学设计（1）
本节课选自《普通高中课程标准实验教科书数学必修1本（A版）》第五章的5.5.1 两角和与差的正弦、余弦和正切公式。本节的主要内容是由两角差的余弦公式的推导，运用诱导公式、同角三角函数的基本关系和代数变形，得到其它的和差角公式。让学生感受数形结合及转化的思想方法。发展学生数学直观、数学抽象、逻辑推理、数学建模的核心素养。课程目标 学科素养1.了解两角差的余弦公式的推导过程．2．掌握由两角差的余弦公式推导出两角和的余弦公式及两角和与差的正弦、正切公式．3．熟悉两角和与差的正弦、余弦、正切公式的灵活运用，了解公式的正用、逆用以及角的变换的常用方法．4.通过正切函数图像与性质的探究，培养学生数形结合和类比的思想方法。 a.数学抽象：公式的推导；b.逻辑推理：公式之间的联系；c.数学运算：运用和差角角公式求值；d.直观想象：两角差的余弦公式的推导；e.数学建模：公式的灵活运用；