黄珊珊---如何上好复习拓展课.doc

如何上好复习拓展课-基于单元整体设计下的文本再构的一个课型探索黄珊珊 广州市广外附设外语学校小学高英组前言：近几年，笔者围绕主题“基于单元整体设计下的文本再构”开展了一系列的课型探索，如：平行式话题建构的课堂实施，梯度式话题建构的课堂实施等。2013年12月，笔者承担了校内组织的校级公开课比赛，展示了单元整体授课下的复习拓展课型，获得了一致好评。通过实践，我对如何上好复习拓展课有了一定的心得积累，下面将以这节荣获校级公开课评比一等奖第一名的课为例，谈谈如何上好复习拓展课。关键词：梳理话题、明确目标、化繁为简、学生自主 一、梳理话题，横纵两线要清晰本节由黄珊珊老师执教的校级公开课是六年级备课组单元整体备课的第五课时。本单元以“ Help save the Earth（拯救地球）” 为话题，以第三单元介绍污染的种类、污染的起因的旧知为依托，重点学习如何防止污染，从身边的小事做起，保护我们共同的家园。前四个课时以污染的种类进行横向划分课时，第一课时谈论land pollution(土地污染)， 第二课时谈论 air pollution (空气污染)， 第三课时谈论 water pollution(水污染)， 第四课时谈论 noise pollution (噪音污染)，并通过纵向线索3R（reduce 减少，reuse重复使用，recycle循环利用）作为解决以上污染的方式，将第四单元的知识点贯穿起来。前面四个课时的教学已完成了以下内容： 课时安排面临的污染问题What problem is it ?引起污染的原因What causes the pollution?如何保护地球How to protect the Earth?语法句型Sentence structures第一课时土地污染Land pollution工厂、人类乱扔垃圾Factories-rubbish，People -rubbish遵循reduce(减少利用)、reuse(重复使用)、recycle（循环利用）的原则，结合Dos 和Donts的短语，引导学生说出自己的答案。学习句型：1._污染是个大问题。_pollution is a big problem.2. _产生 _ 。_produce(s) _. _制造_。_make(s) _. _乱扔 _。_throw _.3. 如果我们继续这样做，_污染将会变得更加严重。If we keep on doing this, _ will become very serious.4. 我们应该/不应该_。We should /shouldnt_. 第二课时空气污染Air pollution工厂排烟、交通排废气Factories-smoke，Traffic-fumes第三课时水污染Water pollution工厂排污、人类乱扔垃圾到水里Factories-waste water and oil，People -rubbish第四课时噪音污染Noise pollution道路施工、电视、广播、音乐的音量过大Roadworks-noise，People-TVs, radios, music二、明确目标，复习巩固加探讨复习拓展课不同于新授课，它的教学目标应重点落脚于复习巩固前面学习的内容，并在此基础上进行适度地拓展，如在情感上的升华，行动上的号召，以及结合时事话题的探讨。基于此，本节课的教学目标设定为：1.复习和巩固谈论land,air,water,noise污染种类的词汇。2.复习和巩固谈论污染起因的词汇；3.复习巩固谈论污染起因的文段，同时尝试引导运用思维导图来强化知识的综合运用；4.复习和巩固3R的概念，加深学生对3R的认识。.5.进一步探讨如何保护地球，分三个场景（学校、家庭、社会）进行深入探讨。6.完成力所能及的小事，呼吁保护我们共同的家园-地球。三、设计环节，化繁为简于无形 教学环节的设计特别考验一个老师的教学功底，一个好的教学设计对环节之间的有序性，有效性，有趣性，策略性都提出了较高的要求。具体教学环节如下：ProceduresContentsMethodsPurposesPretaskI. Warm-up & lead-in1. Watch a video about the global warming.2How does the Earth feel? Why?通过观看关于环境破坏造成全球变暖的视频，带给学生视觉上的冲击，紧扣今天课堂探讨的如何拯救地球的主题，引发学生的思考。WhiletaskII. What Pollution on Earth1. Present pictures about the pollution around the world.2. Q and A: Revise four kinds of pollution.通过问答、图片展示的形式，带出四种污染。提供几组在报刊杂志上截取的关于污染引起的社会事件，引发学生思考，激发学生的主人翁意识。III. WhyCauses of the pollution1.Group work: Talk about the causes of the pollution.Rules: Students can make a speech or make a dialogue.2. Mind map: Consolidate the causes.1.通过小组合作，让学生通过陈述或对话的方式来谈论各种污染的起因。2.通过思维导图，尝试带着学生对旧知文本进行巩固复习，为下面的学习做准备。IV. HowHow to help save the Earth?1. Discuss: What will happen if we keep on doing this?.2. Revise 3R: reduce, reuse and recycle.3. Think and discuss: At school, What should we do?4. Watch and talk: At home, what should we do?5. Talk about the things we can do.1.通过问题的提出，引发学生对污染对地球造成的危害进行思考，并鼓励学生说出自己的想法。2.通过3R措施的提出，鼓励学生积极思考，判断生活当中哪些行为有益于地球，哪些行为对地球有害。3. 列举在学校几个不文明的现象，引导学生思考并讨论如何制止不文明现象。并鼓励学生畅所欲言或演绎出来。4.观看学生在家拍摄的环保微电影，传递环保正能量，并引发讨论，你在家该如何做？5. 展示学生做环保小事的照片，并发起环保宣言：要拯救地球，就要从身边小事做起，我能做到，你也能做到！PosttaskV. Assignment 1. Read a book -the Green Year. 2. Tell your families and your friends to start things around us.延伸课堂学习，激发学习兴趣，巩固与活化所学知识。鼓励学生多读，多听，多说。从表格中不难看出，整个教学过程紧扣“What, Why, How”这三个简单的问题来进行开展多样化的教学活动，这些教学活动多而不乱，看似在复习旧知，实则在无形当中，在老师的引导下，巧妙地将旧知归纳到了三个简单的问题当中，从而帮助学生在课上消除了对大篇幅语篇学习的恐惧感，并培养学生对知识进行系统归纳的能力。四、大胆尝试，学生自主又能动我记得生本教育专家郭思乐教授来我校做讲座的时候，曾讲过这样一句话：一旦自主，不可限量。我很喜欢这句话，也大胆地在教学中做了尝试。课中，学生通过自导自编自演的方式，演绎了一个又一个环保小片段，还拍摄了在校内，在家中自己身体力行做环保小事的视频和照片，并对自己的环保行动做了英文精彩描述，同时发出了倡议。让我既惊喜又感动！下面是部分学生对照片的解说词的摘录：1. Pollution is a big problem. they are bad for the Earth. We could do something small to make a big difference. I could save energy and recycle cans. I could recycling everying I can. Let always remember the 3Rs Reuse, Reduce and Recycle to protect the Earth.（Sunny）2. Look at this photo. I am collecting the plastic bottles. I have already collected a big bag of bottles. After collecting, I will put them into a recycling bin. Thats good for the Earth. By the way, We shouldnt throw away plastic bottle .Thats bad for the Earth. If we keep on doing this, land pollution will become very serious, and plant and animals will die.Remember, We should recycle everything we can recycle. (Levi)3. Winter is coming. And the weather is getting colder and colder,.so we like to take a bath in the bathtub. We like to do it because it is comfortable. But we never think about another thing-We are wasting water .Thats water pollution. Water pollution is a big problem. Especially in a big city. If we keep on doing this, we wont have much water to use. That is a very serious question. So we have to do something to solve this problem. Although we are students, we can start from things around us. And we can tell our friends, our parents and classmates to take a shower not to take a bath. （ Wendy）以下是一名英语成绩非常优秀的孩子为自己编写的公益宣传片的台词，并动员了全家人一起参与视频录制，此公益宣传片一经播出，引起了校内很大反响，也增强了我们每个人的环保意识。Scene One In a Car (在车上)On the road, the driver is waiting for Winner. He is keeping the engine running. A moment later,Winner come into the car and says:在路上，司机正在等芷莹。他开着发动机在等。过了一会儿，芷莹上了车对司机叔叔说 W: Hello, Uncle We shouldnt keep the engine running when we are not driving . It will produce a lot of fumes. Thats bad for the Earth. D: OK. Sorry.Scene Two At Home （在家） Mum is washing vegetables under the tap. And Winner comes. 妈妈正在水龙头下洗蔬菜，芷莹走进来 W: Hello! Mum. Let me help you wash the vegetables. 嗨，妈妈，让我来帮你洗菜吧 M: Ok, you are so helpful. 好啊，你真是个好帮手。 W： Mum, we shouldnt wash things under the tap. It wastes a lot of water. Thats bad for the Earth. 妈妈，我们不应该在水龙头下洗菜，这样会浪费很多水，而且对地球有害。We should wash things in the basin. And we can reuse the water in the basin to water the plants.我们应该用盆子装着水来洗。这样我们就可以把用过的水拿来浇花。 M: Youre right. Lets take a basin. 你说得对。让我们去拿个盆子来。Scene Three In the Living Room （在客厅） Dad is watching TV. And the sound of TV is very loudly. 爸爸正在看电视。电视的声音很大。 W：Dad. Its too noisy. Please turn down the TV. D: Oh,sorry. W: You know, Noise pollution is a big problem. We shouldnt play TV, radio and music loudly. Thats not good for the Earth. D: Youre right. I wont do that again.Scene Four At Home（在家） Grandma is going to the market. She doesnt take any bags in her hand. Winner goes to talk to grandma.外婆准备去市场。她没有带袋子。芷莹上前去。W: Hi, Grandma. Are you going to the market? 嗨，外婆，你要去菜市场吗？G: Yes. 是的。W: Why dont you take the cloth bag with you? Using fewer plastic bags is good for the Earth. 为什么不带上布袋呢？少用些塑料袋对我们地球是有益的。G: OK. 好的。结束语：Nowadays, Land pollution, air pollution,water pollution and noise pol