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人教版高中政治必修3第三课文化的多样性与文化传播精品教案
◇探究提示：我们可以通过人际交往，阅读报纸、杂志、书籍等，欣赏电视、上网查询、发送手机短信、阅读电子读物等方式来搜集资料。其特点为：人际传播是社会生活中最直观、最常见、最丰富的传播现象，具有传播渠道多、方法灵活、意义丰富、反馈及时的特点。报纸、杂志、书籍等，可以通过扫描、编排处理后，显示在互联网上，供广大读者使用。电视提供了动态画面和缤纷的色彩，使人们对信息的理解变得更生动、形象和真实。互联网具有传播同网、全球同时、受众主动、双向互动的特点。手机短信用精练的语言传达丰富多彩的内容，不仅具有娱乐性，还具有情感性、艺术性耙哲理性，让人回味无穷。电子读物实现了文字、图像、声音的完关结合，使人在看图阅文的同时可以听音乐、写文章、做笔记、复制文件等等。
人教版高中政治必修4第九课唯物辩证法的实质与核心教案
探究活动8(教材第72页)：“结合生活事例，谈谈你在面对复杂事物时是如何分析和解决矛盾的?”这一探究活动是在学生还不了解主次矛盾的原理时，让他们回忆自己在生活中有没有遇到过面对许多矛盾时是如何解决的经历。比如，每天面对很多作业，先做哪门课作业后做哪门作业，你是如何考虑的?在学校面对学习、体育运动和社会工作，你是怎么安排的?在生活中，你遇到这样的情况都是怎样解决的?通过探究活动，使学生弄清主次矛盾的原理，学会用矛盾分析法分析问题。探究活动9(教材第73页)：“你在生活中是如何分析具体问题的?”这一探究活动，强调的是“你”在生活中是如何运用分析法分析具体问题的，要紧紧围绕学生这一中心，首先强调具体问题具体分析的方法非常重要，这是马克思主义的一个原则，是马克思主义的活的灵魂。引导学生主动运用这种分析方法分析看待自己，分析看待社会。可以组织学生进行讨论、交流，还可以让学生撰写小论文，写出自己运用这种分析方法分析了哪些具体问题，有哪些感受。
人教版高中政治必修4第六课求索真理的历程教案
农业科学的周期是以年为时间单位，一次实验就要等到一次花开、结果。就这样，几个实验误导了袁隆平好几年。这时登在《参考消息》上的一篇不起眼的文章像给迷途中的袁隆平以当头一棒：克里克、沃森和威尔金斯发现DNA螺旋结构，西方的遗传学研究进入分子水平。“我当时还在那里搞什么无性杂交，糟糕得很”。水稻是自花授粉植物，雄蕊雌蕊都在一朵花里面，雌雄同株，没有杂种优势一杂种优势是生物界的普遍现象，小到细菌，大到人，近亲繁殖的结果是种群的退化。但是水稻因为花小，其杂交是当时公认的世界难题，设在马尼拉的世界水稻研究中心就是因为困难重重，差点关闭。袁隆平偏不信这个邪，他突发灵感：专门培养一种特殊的水稻品种——雄花退化的雄性不育系，没有自己的花粉，这样不就可以做到杂种优势了吗?于是，漫长的寻找过程开始了，要找到这样一株雄花退化而且杂交之后产量猛增的“太监”水稻简直是大海捞针。
人教版高中政治必修4第七课唯物辩证法的联系观教案
2．能力目标(1)通过本课的学习，要求着重培养学生全面地、联系地看问题和分析问题的能力；培养学生综合运用知识的能力，以及运用所学知识分析、处理和解决实际问题的能力。(2)使学生初步具有从错综复杂的联系中认识和发现事物本质的、固有的、内在的联系的能力，初步学会用全面的、联系的观点看问题的能力。(3)使学生初步具有坚持和把握整体与部分辩证关系的能力，初步具有运用系统优化的方法安排自己学习和生活的能力。在处理问题时，既要看到整体与部分之间的联系又要看到它们的区别，掌握系统优化的方法，学会运用综合性的思维方式认识事物和处理生活、学习和工作中的问题。3．情感、态度和价值观目标(1)树立唯物辩证法的联系观，自觉抵制形而上学的静止观。坚持用联系的观点看问题，自觉维护人类生存的环境，确信一切以时间、地点和条件为转移，是我们正确认识和把握事物、在认识世界和改造世界的活动中不断取得成功的关键。
人教版高中政治必修4第四课探究世界的本质教案
二是中国人口多、资源相对不足日益成为制约发展的突出矛盾。我国人均水资源拥有量仅为世界平均水平的1／4，600多个城市中，400多个缺水，其中110个严重缺水。我国人均耕地拥有量不到世界平均水平的40％。石油、天然气、铜和铝等重要矿产资源的人均储量分别只占世界人均水平的8．3％、4．1％、25．5％、9．7％。三是我国这20年来经济快速发展，能源浪费大、环境破坏严重等问题日益凸显，人与自然的矛盾从未像今天这样突出。无序、无度的消耗，迅速透支我们宝贵的资源。以下是来自国家环保总局的一组沉甸甸的数据。——从上世纪50到90年代，每年沙化土地扩大面积从560平方公里增加到2460平方公里，我国18个省的471个县、近4亿人口的耕地和家园正受到不同程度的荒漠化威胁。——1952年我国人均耕地2．82亩，2003年人均耕地减少到1．43亩，在各地轰轰烈烈的“圈地”热潮中仅最近7年全国耕地就减少了1亿亩，被占耕地大量闲置。
人教版高中政治必修3第四课文化的继承性与文化发展精品教案
◇探究提示：(1)孔子思想体系的核心是“仁’’和“礼”，其主要内容是“仁者爱人”和“克己复礼”。孔子提出“仁”的学说，要求统治者体察民情，反对苛政和任意刑杀；提倡广泛地理解、体贴他人，以此调整人际关系，稳定社会秩序。孔子讲的“克己复礼”，是说做人要克制自己，使自己的行为符合‘‘礼’’的要求。(2)老子认为“道”是凌驾于天之上的天地万物的本原，他提出‘‘天法道，道法自然”的思想。老子从“天道自然无为”的思想出发，倡导政治上“无为而治”，以“无事取天下”。老子哲学中包含着丰富的辩证法思想，他指出，任何事物都有矛盾、对立的两个方面，矛盾双方可以相互转化。(3)墨子主张“兼爱”“非攻”，“兼爱”就是无等差的爱，无论任何人，都不分轻重厚薄；“非攻”就是反对不义的兼并战争，主张各国和平相处。(4)韩非子崇尚法，强调法的重要性，主张法、术、势相结合，建立一个君主专制的中央集权国家，要求人人必须遵守法；韩非子还认为社会不断发展变化，历史永远不会倒退，主张变法革新。
人教版高中政治必修3第五课文化创新精品教案
3．社会实践对文化创新的决定作用社会实践对文化创新具有两个方面的重要作用：(1)社会实践是文化创新的源泉实践，作为人们改造客观世界的活动，是一种有目的、有意识的社会性活动。人类在改造自然和社会的实践中，创造出自己特有的文化。离开了社会实践；文化就会成为无源之水、无本之木，人们不可能从事任何有价值的文化创造。◇本课小结：1．关于本课逻辑结构的宏观把握：文化创新的源泉和作用这一问题，教材分三个层次展开论证：一是不尽的源泉，不竭的动力；二是巨大的作用，深刻的意义；三是呼唤文化创新的时代。教材运用辩证方法从文化创新的源泉和作用展开论述。即社会实践是文化创新的源泉，文化创新又推动社会实践的发展和促进民族文化的繁荣。教材关于文化创新的途径问题，从三个层次展开讲述：第一个层次是“继承传统，推陈出新”；第二个层次是“面向世界，博采众长”；第三个层次是“坚持正确方向，克服错误倾向”。
人教版高中政治必修3第六课我们的中华文化精品教案
（三）、中华之瑰宝．民族之骄傲1．我国各具特色的民族文化异彩纷呈．都为中华文化的形成和发展做出了重要贡献(1)我国的雕刎建筑艺术是各族人民共同创造的，都是中华文化的瑰宝。例如：敦煌石窟、云冈石窟；克孜尔千佛洞等，是古代的汉族、鲜卑以及西域各族的艺术家和劳动人民共同创造的。(2)许多少数民族用自己的语言文字创造了优秀的民族文学。例如：藏族的《格萨尔王传》、蒙古族的《江格尔》和柯尔克孜族的《玛纳斯》被并为三大英雄史诗。◇注意：民族文化深深地体现着各民族的风俗和精神面貌，通过一定的物质展现，可以表现在建筑、民族文学、舞蹈、习俗、信仰、衣着等方方面面。◇点拨：“相关链接”中提到的《江格尔)是蒙古族卫拉特郝英雄史诗。史诗的篇幸结构、故事情节、语言风格等具有蒙古族说唱艺术的特点。从民族文学角度反映了本民族的文化生活．同时也为中华文化增添了绚丽色彩。◇课堂探究：(1)你还知道哪蝗少数民族舞蹈?它们务有什么特点?
人教版高中政治必修4第四课探究世界的本质精品教案
3、运用目标（1）运用所学知识说明世界真正的统一性就在于它的物质性（2）运用所学知识及相关哲学原理，分析作为物质观发展的第一个基本阶段，古代朴素唯物主义物质观的局限性，从分析论证中加深对辩证唯物主义物质观的科学性的理解（3）列举实际事例，结合相关哲学原理，讨论如果只承认运动的绝对性，而否认静止的相对性会导致的结果，分析马克思主义哲学为什么要坚持绝对运动与相对静止的统一（4）世界是有规律的，规律是普遍的。列举实际事例，分析任何事物都有其内在的规律性，规律是客观的，是不以人的意志为转移的，但是人在规律目前并不是无能为力的二、能力目标1、培养学生自觉运用马克思主义的物质观分析宇宙间一切事物及现象的能力2、锻炼学生理论联系实际的能力，培养学生正确认识世界的本质，并能够自觉地按照客观规律办事的能力
人教版高中政治必修4第五课把握思维的奥妙精品教案
【导入新课】2005年10月17日凌晨，5天前从酒泉卫星发射中心起航的“神舟”六号飞船，在平安飞行115个小时32分后重返神州，缓缓降落在内蒙古四子王旗主着陆场的草地上。我国首次真正意义上有人参与的空间飞行试验取得圆满成功。 当费俊龙和聂海胜先后自主出舱，面带胜利的微笑，现场参试人员欢呼雀跃，亿万中华儿女为之自豪，幸福写在每个人的脸上。神六飞行是一次非常完美的飞行任务，又一次让载人航天精神“从地面升到天空，从天空安全返回”。伟大的事业孕育伟大的精神。新一代航天人在攀登科技高峰的伟大征程中，以特有的崇高境界、顽强意志和杰出智慧，铸就了载人航天精神，这就是特别能吃苦、特别能战斗、特别能攻关、特别能奉献的精神。【思考讨论】“伟大的事业孕育伟大的精神”体现怎样的哲学道理?我国为什么要提倡发扬“特别能吃苦、特别能战斗、特别能攻关、特别能奉献”的载人航天精神?（人具有主观能动性）
五年级礼仪课教学教材教案
一、教学目标1、让学生懂得使用文明用语是学生应有的美德。2、让学生知道常用的文明用语，并学会运用。3、培养学生使用文明用语的良好习惯。
新人教版高中英语必修3Unit 4 Space Exploration-Reading and Thinking教学设计二
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?
新人教版高中英语必修3Unit 5 The value of money-Reading and Thinking教学设计二
? 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?
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 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 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 4 Space Exploration-Reading for Writing教学设计二
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？
《中学时代》教案
第一课时教学过程:1．播放《中学时代》歌曲视频，让学生感受歌曲欢快热烈，充满活力的情绪，进入学习的情境。2．讨论:对刚刚看到听到的歌曲进行初步的分析，如:歌曲的情绪是什么样的？歌曲的速度为什么用“中速稍快”而不用慢速、很慢来表现？歌曲演唱有什么特点？等等。3．第二边播放歌曲视频，结合讨论的问题再次聆听，进一步感受歌曲的力度\速度\演唱情绪。4．学唱《中学时代》，边唱边体会歌曲的意境.注意轻声哼唱。5．请学生仔细观察，找一找\议一议\谈一谈，简单分析歌曲的特点。6．在手风琴伴奏下，进一步练唱歌曲，直至熟练演唱。7．将学生分成两组，比一比那个组演唱的声音洪亮，情绪饱满，音高、节奏准确。8．讨论:这首歌曲还可以采取哪些演唱形式？(独唱、领唱等)9．教师可以按照学生讨论的意见，采用多种方法和演唱形式练唱，边唱边拍手打节奏.还可由自主设计其它方式进行表演。课堂练习：进一步练习准确掌握曲中节奏x xx 0 ( xxxx)演唱与间奏的衔接。作业安排：视唱歌曲前半部分。
人教版三年级下册《尾巴有只猫》教案
一、研读课文，1. 体会作者一家对三只猫的不同感情以及猫亡失后作者的感情，找出文中具体表达的句子。第一只猫：“三妹常常取了一条红带，或一根绳子，在它面前来回地托摇着，它便扑过来抢，又扑过去抢。我坐在藤椅上看着他们，可以微笑着消耗过一两个小时的光阴，那时太阳光暖暖的照着，心上感着生命的新鲜与快乐。”“我心里感着一缕的酸辛，可怜这两月来相伴的小侣！”第二只猫：“我们都很为它提心吊胆，一天都要‘小猫呢？小猫呢？’查问个好几次。”“三妹常指它笑着骂道：你这小猫呀，要被乞丐捉去后才不会乱跑呢！”“饭后的娱乐，是看它在爬树。”“我也怅然的，愤恨的，在诅骂着那个不知名的夺去我们所爱的东西的人。”“自此，我家好久不养猫。”第三只猫：“但大家都不大喜欢它，它不活泼，也不像别的小猫喜欢顽游，好像是具有天生的忧郁性似的，连三妹那样爱猫的，对于它也不加注意。”“过了几个月，它在我家仍是一只若有若无的动物。”“三妹有时也逗着它玩，但没有对于前几只小猫那样感兴趣。”“大家都去找这可厌的猫，想给它一顿惩戒。”“自此，我家永不养猫。”第一只猫“很活泼”，“我看着三妹逗猫玩的融副泄泄的生活情景，感着生命的新鲜与快乐”，当猫无故病死后“可怜这两月来相伴的小侣”并为之“酸辛”；当第二只“更有趣，更活泼”的猫在周围邻居冷漠的观望中被那些“过路人”捉走后就“怅然”、“愤恨”、“诅骂”，在这段生活经历中展示的“我的人性”充满爱心，表现得十分宽容、温馨、善良和光明。然而在“芙蓉鸟事件”发生后的“我”，不仅只凭主观猜测“妄下断语”，面对猫这个弱小、可怜的动物怒气冲天“拿木棒追打”、“心里还愤的，以为惩戒的还没有快意”，人在动物面前恃强凌弱，则充分暴露了人性中凶恶、冷酷、残暴和阴暗的一面。不过，当“我”明白这只丑猫并非是罪魁祸首后，良心受到了谴责。2. 说说为何“我”对第三只猫的死比前两只猫的亡失“更难过得多”？第二只猫丢失后，作者写道：“自此，我家好久不养猫。”第三只猫死后，作者又写道：“自此，我家永不养猫。”试着联系课文中的描写，体会这两句话中包含的思想感情有什么不同？因为第三只猫的死责任在“我”。我们的主观臆断，断定鸟是它咬死的，暴怒之下“我”用木棒打它，它受到冤苦无处辩诉，最后死在邻家屋檐上。“我”认为是“我”把它害死的，而且这个过失是无法补救的。这句话在内容上是对全文的总结。“我”目睹了前两只猫的不幸后，又亲自制造了第三只猫的悲剧，深感负疚，为了不再看到这样的悲剧重演下去，“自此，我家永不养猫”这句话与文章的开头遥相呼应，在结构上形成了首尾呼应的特点。
人教版新目标初中英语九年级下册When was it invented教案
二、教学 1a，1b．1．First the teacher asks the students what kind of fruit food and drink you like the best and writes down on the blackboard．教师问学生最喜欢什么水果和饮料并把它们写在黑板上。比如：potato chips，ice cream，tea，lemon，chocolate，oranges，salad，popcorn，pickle and so on．2．接着叫学生表达以上食物的味道，引出新单词——sweet，crispy，salty，sour，delicious，hot，awful，nice…并且完成lb教学内容通过此活动，以旧带新引入新单词。其目的是让学生自主学习新知识。 三、教学 2a，2b1．首先，听力前的brainstormFirst，Let students describe how potato chips taste and describe how helpful the potato chips．Then，ask：When and where were potato chips invented?Who were potato chips invented by?How were potato chips invented?(Let students guess according to the following key words．)Key words：by accident，customer，restaurant，by mistake．(说明：通过问题让学生对对话内容有整体了解，为听力练习做好准备；又培养学生的注意力，想像力，观察力。)