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北师大初中九年级数学下册三角函数的计算1教案

  • 大班科学教案:感受味道

    大班科学教案:感受味道

    [活动目标]1、学习运用多种感官感受味道,并进行通感联想、感受味道与音乐、色彩的互通性。2、发展幼儿的感知能力,培养审美情趣。  [活动准备]1、幼儿已具备有关冷暖色调方面的知识。2、布置“食品城”。炒苦瓜、炒辣椒、柠檬、香蕉。3、提供各色卡纸,水彩笔、白纸、镜子等每人一份。4、《喜庆》、《二泉映月》的磁带。5、写有“喜庆”和“二泉映月”的两块黑板。  [活动过程]

  • 大班科学教案:快乐转转转

    大班科学教案:快乐转转转

    活动准备: 1、各种可以转动的物体(风车、发条玩具、陀螺、皮球、杯子、塑料盆、积木、雪花片、椅子、溜溜球、绳子、筷子、牙签等) 2、音乐“圆舞曲”,录音机活动过程: 一、玩转动玩具,初步获得有关转动的经验,感受有趣的转动现象。 1、教师提出游戏要求:玩玩具的时候仔细观察,说一说你是怎么玩的,有什么发现。 2、幼儿自选玩具操作,教师引导幼儿用语言交流自己的玩法和发现。 3、小结:通过手的运动,这些玩具都能转动起来。 二、提供生活中常见的一些能转动的物品和体育器械,引导幼儿用多种方法使它们转动。 1、幼儿尝试转动自己的小椅子,教师引导:“它能转动吗?怎样转呢?” 2、教师:“这儿还有许多玩具,它们能转动吗?现在我们来比一比,看谁能用更多的方法让它们转动起来。” 3、幼儿操作,教师鼓励幼儿运用多种方法使物体转动。 4、幼儿交流自己的转动方法。

  • 大班科学教案:“乌鸦喝水”

    大班科学教案:“乌鸦喝水”

    活动目标:1、探索如何让瓶子里的水位升高。<BR><P></P>2、学习小组合作探索,让幼儿体验与同伴合作学习互相交流的乐趣。活动准备:1、课件《乌鸦喝水》、2、小石子、沙子、碎布头、海绵、棉花、纸张等各种投放材料、3、饮料瓶子若干、4、统计纸活动过程:一、 课件引题1、观看课件前半段(乌鸦口渴,找到一个装有半瓶水的瓶子):“小朋友,有一只乌鸦口渴了,它找到一个瓶子,喝到水了吗?”(没有)2、“你们能帮乌鸦想办法喝到水吗?”

  • 大班科学教案:都站起来吧!

    大班科学教案:都站起来吧!

    活动目标: 1、 通过参与分类活动,了解物体立起来与接触面的关系。 2、 大胆探索使物体立起来的多种方法,与同伴分享成功的喜悦。 3、 交流探索结果,萌发幼儿热爱科学的情感。 活动准备: 1、 教师知识经验:知道各种物体的材质,了解物体立起来的原因。 幼儿知识经验:了解各种物体的名称及材质。 2、 物质材料准备: (1) 能立和不能立的物体:瓶盒铅笔水彩笔积木书纸吸管(粗、细)羽毛、 (2) 记录表每人一份。 (3) 录音机,磁带。 3、 环境的准备 (1) 活动区投放各种辅助材料,如:插塑积木、橡皮泥、米、沙子、胶带、皮筋、剪刀、等。 (2) 活动前一周请家长协助幼儿收集各种物体(盒子、瓶子、羽毛等物体)

  • 大班科学教案:接管子

    大班科学教案:接管子

    二.活动目标: 1. 体验操作活动的乐趣,并清楚地表达自己的想法。 2. 能按要求连接管子,发现管子的多种连接方法。 3. 尝试绘制和使用管子组合连接线路图,了解线路图的作用。 三.活动准备: 接管子的模型(线路)结构框架、长短不一的各种管子、接头、记录表。 四.活动过程 1. 提出问题,通过讨论,探索解决问题的方法。 2. 实验操作:按要求连接管子。

  • 大班科学教案:分类

    大班科学教案:分类

    区域活动一:分图形  准备;○、△、□几何图形若干,每种形状有2种颜色、2种大小,小篮子若干。  过程:师:“弟弟妹妹要玩拼图游戏,可是这些图形都混在一起,他们不容易很快找到想要的图形,怎么办呢?”(让幼儿思考后说一说,然后教师再提出操作要求)“想一想,这些图形可以怎么分?小朋友可以一起商量,看你们能找出几种不同的分法。”  区域活动二:娃娃超市  准备:绒布玩具、饮料瓶、塑料恐龙、塑料水果、衣服、玩具汽车、积木等

  • 大班科学教案:空气在哪里?

    大班科学教案:空气在哪里?

    活动目标: 1、让幼儿感知空气的存在,发现空气无处不在,并能用语言清楚的表达自己的发现 2、培养幼儿对科学小实验的兴趣,提高动手动脑能力 活动准备:每桌一盆清水;手帕、玻璃杯、塑料袋、气球等 活动过程:一、激发兴趣1、老师出示吹好的气球,提问:“小朋友,气球娃娃来找你们玩来了,大家快跟它打个招呼吧!2、气球爆炸为什么会有响声?3、引导幼儿说出气球里是空气,老师 “空气从哪里来?我们去找空气好不好?

  • 大班科学教案:昆虫运动会

    大班科学教案:昆虫运动会

    准备 小容器、塑料袋等若干个。 过程 活动(一)捕捉昆虫 幼儿到草地上捕捉昆虫。将捕到的昆虫按会爬的、会跳的、会飞的……分类放在容器中。 活动(二)昆虫运动会 将幼儿捕捉的各种昆虫放在一起,准备举办昆虫运动会。 1、将会跳的虫子放在大纸盒子内,比一比谁跳得高。同时引导幼儿观察比较昆虫的前腿与后腿有什么不同,为什么有的昆虫跳得高,有的跳不高?

  • 大班科学教案:弹力运动会

    大班科学教案:弹力运动会

    二、活动目标:通过观察与实验,使幼儿进一步感知不同物体的弹性现象,培养幼儿观察的敏锐性。三、适用对象:5~6岁幼儿。四、活动所需资源皮球、橡筋、气球、弹簧、木块、铁片、弹性球、动物标靶、自制弹弓(每人一个)、纸制子弹等。五、活动过程:拍一拍,捏一捏,感知不同物体的弹性。幼儿自主选择一个皮球跟着音乐拍球,其中有些皮球是没有气的。诱导幼儿按一按、捏一捏有气和没有气的皮球,共同找出原因,知道皮球打了气会弹得高,原来空气也有弹性。找一找生活中有弹性的物品。(1)在一大堆物品中找出有弹性的物品(如拉一拉弹簧、橡筋、捏一捏气球、海绵等)。(2)在日常生活中还有哪些物品是有弹性的。如弹簧床、海棉枕头、沙发、床垫、吹气救生圈等。玩一玩。(1)橡筋的一端系在中指上,另一端系一只小球,并用同一只手拿着球向下投,用手掌收回小球。(2)橡筋一端系着中指,然后一只手拿着球向前投,随后收回,重复投掷,可投向目标处。(3)固定橡筋一端,另一端手拉着小球,拉到一定的距离时放手,让球反弹回去,超过固定物的高度。(4)将长橡筋的一端固定在乒乓球拍柄上,然后用球拍向上拍打小球,让小球弹上去又拉回来,反复拍打。做游戏。

  • 大班科学教案:借尾巴

    大班科学教案:借尾巴

    2、享受听故事的乐趣。活动准备: 《借尾巴》的课件。 活动过程: 一、以讯问的口气引出课题,激发小朋友的兴趣 师:小朋友有没有见过小兔子的短尾巴啊?今天老师就给小朋友将一个关于小兔子的短尾巴的故事,小朋友想听吗? 二、师有感情的讲述故事进行提问,帮助幼儿了解动物尾巴的作用。 1、小兔子为什么想要借尾巴啊?

  • 大班科学教案:家用电器

    大班科学教案:家用电器

    活动目标:1、在交流分享中认识各种家用电器的名称,感受家用电器在人们生活中的用处。2、对生活中的家用电器感兴趣。 活动准备:1、前期经验:幼儿观过商厦里的电器专柜,并实地进行观察、记录、询问。2、家用电器的录像。3、幼儿在家里寻找各种家用电器,并以图画的形式记录下来。 活动过程:一、了解家用电器的概念。1、老师使用吹风机:“这是什么?它有什么用处?它通过使用什么才工作的?  (知道吹风机是通过使用电才开始工作的)2、老师小结:我们家里使用的一些能够方便我们生活、使用电的机器,我们称他们家用电器。二、介绍自己家里的家用电器。1、老师导入:你们家里面有哪些家用电器,我们一起交流一下。2、幼儿介绍自己在家里寻找到的各种家用电器。3、数数自己家里有几样家用电器,比一比谁家的家用电器多。4、老师小结:我们每家都有很多家用电器,这些不同的家用电器也有些什么用处呢?三、交流各种家用电器的用处。  播放家用电器的录像,边看边讨论。(电视机、电冰箱、洗衣机、微波炉、空调、浴霸、电饭锅、抽油烟机、轧汁机、吸尘器、电熨斗等等)1、这是什么?有什么用处?2、它们的形状、颜色一样吗?为什么要不一样?(满足人们不同的喜好)3、随机提问:你同意他的说法吗?还有什么意见?4、你们还有什么问题吗?可以提出来大家一起讨论?5、老师小结:家用电器用处可真大,它们给我们生活带来了方便。

  • 大班老师国旗下讲话稿

    大班老师国旗下讲话稿

    大班老师国旗下讲话稿有哪些呢。小编为大家推荐下文,希望可以帮助到你。欢迎大家阅读参考。尊敬的老师们,亲爱的小朋友们,大家早上好!我叫忻奕麟,是大(一)班的小朋友,每个星期一的早晨,我们幼儿园都会举行升旗仪式。今天是新学期的第一次升旗仪式, 我们小朋友迈着整齐的步伐,来到了五星红旗下,我的内心非常激动。我想大家和我的感觉也是一样的。从幼儿园的小弟弟、小妹妹长成了大哥哥、大姐姐,我们的知识一天天丰富;我们的能力一步步提高;我们每一点进步,每一次成功,都离不开我们亲爱的老师,是你们的细心呵护和教诲陪伴我们成长。在这里我代表所有的小朋友,向老师说一声“谢谢”新学期我们迎来了很多新朋友,我们大班的哥哥姐姐,会有一个崭新的面貌。请老师放心,我们会积极勇敢的参加各种活动,会获得更多的进步。请老师放心,我们会好好学习,天天向上。给小弟弟妹妹们做个好榜样!在这里祝愿小朋友们在新学期里学会更多的本领。

  • 新人教版高中英语必修3Unit 2 Morals and Virtues教学设计二

    新人教版高中英语必修3Unit 2 Morals and Virtues教学设计二

    Activity 41. Students complete the task of activity 4, then teachers and students check the answers. 2. The teacher organized the students to work together and asked them to use the tables and mind maps sorted out before to retold the important choices in Lin Qiaozhi's life and their resultsStep 5 Language points1. The teacher asks the students to read the text carefully, find out the core words and long and difficult sentences in the text and draw lines, understand the use of vocabulary, and analyze the structure of long and difficult sentences. 2. The teacher explains and summarizes the usage of core vocabulary and asks the students to take notes. 3. The teacher analyzes and explains the long and difficult sentences that the students don't understand, so that the students can understand them better. Step 6 Homework1. Read the text again, in-depth understanding of the text; 2. Master the use of core vocabulary and understand the long and difficult sentences. 3. Complete relevant exercises in the guide plan. 1、通过本节内容学习,学生是否理解和掌握阅读文本中的新词汇的意义与用法;2、通过本节内容学习,学生能否结合文本特点总结林巧稚的人生原则和人格品质特征;3、通过本节内容学习,学生能否针对人生抉择发表自己的看法;能否全面地、客观地、理性地看待问题,进而对道德和人性有更加深入的思考和理解。

  • 新人教版高中英语必修3Unit 2 Morals and Virtues教学设计四

    新人教版高中英语必修3Unit 2 Morals and Virtues教学设计四

    3.Teachers ask different groups to report the answers to the questions and ask them to try different sentence patterns.The teacher added some sentence patterns for students to refer to when writing.Step 4 Writing taskActivity 51.Write the first draft.Students first review the evaluation criteria in activity 5, and then independently complete the draft according to the outline of activity 4, the answers to the questions listed in the group discussion and report, and the reference sentence pattern.2.Change partners.The teacher guides the students to evaluate their partner's composition according to the checklist of activity 5 and proposes Suggestions for modification.3.Finalize the draft.Based on the peer evaluation, students revise their own compositions and determine the final draft.Finally, through group recommendation, the teacher selects excellent compositions for projection display or reading aloud in class, and gives comments and Suggestions.Step 5 Showing writingActivity 5T call some Ss to share their writing.Step 6 Homework1. Read the passage in this section to better understand the passage.2. Carefully understand the hierarchical structure of the article, and deeply understand the plot of the story according to the causes, process and results;3. Independently complete the relevant exercises in the guide plan.1、通过本节内容学习,学生是否理解和掌握阅读文本中的新词汇的意义与用法;2、通过本节内容学习,学生能否通过人物言行的对比分析道德故事的深层内涵;3、通过本节内容学习,学生能否根据故事的起因、经过和结果来深入理解故事的情节,从而了解文章的层次结构;4、结合现实生活案例发表自己的见解和看法,写一篇观点明确、层次分明的故事评论。

  • 新人教版高中英语必修3Unit 2 Morals and virtues教学设计一

    新人教版高中英语必修3Unit 2 Morals and virtues教学设计一

    (2) students are divided into groups according to the requirements of activity 3. Each student shares a story of personal experience or hearing-witnessing kindness, and then selects the most touching story in the group and shares it with the whole class. Before the students share the story, the teacher can instruct them to use the words and sentence patterns in the box to express. For example, the words in the box can be classified:Time order: first of all, then, after that, later, finally logical relationship :so, however, although, butTeachers can also appropriately add some transitional language to enrich students' expression:Afterwards, afterwards, at last, in the end, eventuallySpatial order: next to, far from, on the left, in front ofOtherwise, nevertheless, as a result, therefore, furthermore, in addition, as well asSummary: in a word, in short, on the whole, to sum up, in briefStep 8 Homework1. Understand the definition of "moral dilemma" and establish a correct moral view;2. Accumulate vocabulary about attitudes and emotions in listening texts and use them to express your own views;3. Complete relevant exercises in the guide plan.1、通过本节内容学习,学生能否理解理解“道德困境”的定义;2、通过本节内容学习,学生能否通过说话人所表达的内容、说话的语气、语调等来判断其态度和情绪;3、通过本节内容学习,学生能否针对具体的道德困境发表自己的看法和见解,能否掌握听力理训练中的听力策略。

  • 新人教版高中英语必修3Unit 3 Diverse Cultures教学设计二

    新人教版高中英语必修3Unit 3 Diverse Cultures教学设计二

    (2)Consolidate key vocabulary.Ask the students to complete the exercises of activity 6 by themselves. Then ask them to check the answers with their partners.(The first language:Damage of the 1906 San Francisco earthquake and fire.A second language: Yunnan - one of the most diverse provinces in China).Step 5 Language points1. The teacher asks the students to read the text carefully, find out the more words and long and difficult sentences in the text and draw lines, understand the use of vocabulary, and analyze the structure of long and difficult sentences.2. The teacher explains and summarizes the usage of core vocabulary and asks the students to take notes.3. The teacher analyzes and explains the long and difficult sentences that the students don't understand, so that the students can understand them better.Step 6 Homework1. Read the text again, in-depth understanding of the text;2. Master the use of core vocabulary and understand the long and difficult sentences.3. Complete relevant exercises in the guide plan.1、通过本节内容学习,学生是否理解和掌握阅读文本中的新词汇的意义与用法;2、通过本节内容学习,学生能否结合文本特点了解文章的结构和作者的写作逻辑;3、通过本节内容学习,学生能否了解旧金山的城市风貌、文化特色,以及加利福尼亚州的历史,体会多元文化对美国的影响。

  • 新人教版高中英语必修3Unit 3 Diverse Cultures教学设计四

    新人教版高中英语必修3Unit 3 Diverse Cultures教学设计四

    该板块的活动主题是“介绍一个有显著文化特征的地方”( Describe a place with distinctive cultural identity)。该板块通过介绍中国城继续聚焦中国文化。本单元主题图呈现的是旧金山中国城的典型景象, Reading and Thinking部分也提到中国城,为该板块作铺垫。介绍中国城的目的主要是体现中国文化与美国多元文化的关系,它是美国多元文化的重要组成部分。中国城也是海外华人的精神家园和传播中国文化的重要窗口,外国人在中国城能近距离体验中国文化。1. Read the text to understand the cultural characteristics of Chinatown in San Francisco and the relationship between Chinese culture and American multiculturalism;2. Through reading, learn to comb the main information of the article, understand the author's writing purpose and writing characteristics;3. Learn to give a comprehensive, accurate, and organized description of the city or town you live in;Learn to revise and evaluate your writing.Importance:1. Guide the students to read the introduction of Chinatown in San Francisco and grasp its writing characteristics;2. Guide students to introduce their city or town in a comprehensive, accurate and organized way;3. Learn to comb the main information of the article, understand the author's writing purpose, and master the core vocabulary.

  • 新人教版高中英语必修3Unit 3 Diverse Cultures教学设计一

    新人教版高中英语必修3Unit 3 Diverse Cultures教学设计一

    Activity 81.Grasp the main idea of the listening.Listen to the tape and answer the following questions:Who are the two speakers in the listening? What is their relationship?What is the main idea of the first part of the listening? How about the second part?2.Complete the passage.Ask the students to quickly review the summaries of the two listening materials in activity 2. Then play the recording for the second time.Ask them to complete the passage and fill in the blanks.3.Play the recording again and ask the students to use the structure diagram to comb the information structure in the listening.(While listening, take notes. Capture key information quickly and accurately.)Step 8 Talking Activity 91.Focus on the listening text.Listen to the students and listen to the tape. Let them understand the attitudes of Wu Yue and Justin in the conversation.How does Wu Yue feel about Chinese minority cultures?What does Justin think of the Miao and Dong cultures?How do you know that?2.learn functional items that express concerns.Ask students to focus on the expressions listed in activity. 3.And try to analyze the meaning they convey, including praise (Super!).Agree (Exactly!)"(You're kidding.!)Tell me more about it. Tell me more about it.For example, "Yeah Sure." "Definitely!" "Certainly!" "No kidding!" "No wonder!" and so on.4.Ask the students to have conversations in small groups, acting as Jsim and his friends.Justin shares his travels in Guizhou with friends and his thoughts;Justin's friends should give appropriate feedback, express their interest in relevant information, and ask for information when necessary.In order to enrich the dialogue, teachers can expand and supplement the introduction of Miao, dong, Lusheng and Dong Dage.After the group practice, the teacher can choose several groups of students to show, and let the rest of the students listen carefully, after listening to the best performance of the group, and give at least two reasons.

  • 新人教版高中英语选修2Unit 4 Reading and thinking教学设计

    新人教版高中英语选修2Unit 4 Reading and thinking教学设计

    【词汇精讲】highlight n.最好或最精彩的部分 vt.突出;强调;使醒目One of the highlights of the trip was seeing the Taj Mahal.这次旅行的亮点之一是参观泰姬陵。Your resume should highlight your skills and achievements.你的简历应该突出你的技能和成就。The report highlights the major problems facing society today.报告强调了当今社会所面临的主要问题。I’ve highlighted the important passages in yellow.我用黄色标出了重要段落。7.Edmonton is freezing cold in winter,with daily temperatures averaging -10 ℃.埃德蒙顿冬季寒冷,日平均气温为-10°C。【词汇精讲】freezing adj.极冷的;冰冻的Leave a basin of water outside in freezing weather.在冰冻的天气里,放一盆水在室外。It’s freezing cold outside so wear a warm coat.外面超冷的,所以穿一个暖和一点的外套吧。8.It was not until 9:30 a.m.that they finally reached the capital of Ontario,Toronto.直到上午9时30分,他们才终于到达多伦多的首府安大略省。【句式剖析】本句是一个强调句,强调的是句子的时间状语until 9:30。含有not...until...的句子的强调句为It is not until...that...,that后面的句子要用肯定形式。It was not until then that I suddenly realized nobody was happier than I was.直到那时我才突然意识到没有人比我更幸福了。

  • 新人教版高中英语选修2Unit 3 Learning about Language教学设计

    新人教版高中英语选修2Unit 3 Learning about Language教学设计

    1. We'll need ten months at least to have the restaurant decorated.2.Some traditional Chinese dishes from before the Ming Dynasty are still popular today.3.My grandpa's breakfast mainly includes whole grain biscuits and a glass of milk.4.People in this area would eat nearly a kilo of cheese per week.5. We enjoyed a special dinner in a fancy restaurant where the waiters all wore attractive suits.6. He prefers this brand of coffee which, as he said, has an unusually good flavor.Key:1. at a minimum 2. prior to3. consist of4. consume5. elegant6. exceptionalStep 5:Familiarize yourself with some food idioms by matching the meaning on the right with the colored words on the left.1.Public concern for the health of farm animals has mushroomed in the UK2.Anderson may be young but he's certainly rolling to doing dough!3.George is a popular lecturer. He often peppers his speech with jokes.4.As the person to bring home the bacon, he needs to find a stable job.5 He is often regarded as a ham actor for his over emphasized facial expressions. The media reported that these companies had treated pollution as a hot potato. 6.The media reported that these companies had treated pollution as a hot potato.7.Don't worry about the test tomorrow. It's going to be a piece of cake!8. It's best to fold the swimming ring when it is as flat as a pancake.A. completely flatB. something that is very easy to do C.an issue that is hard to deal withD.to include large numbers of somethingE.to earn on e's living to support a familyF. wealthyG.to rapidly increase in numberH. an actor who performs badly, especially by over emphasizing emotions

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