Unit 4 Space ExplorationReading and Writing示范课教案【英语人教必修第三册】.docx

Unit 4 Space Exploration子主题3：探讨太空探索的意义Period 3 Reading and Writing一、教学内容分析本课时为子主题3的第三课时。语篇承接前两课时“是否值得耗费时间和金钱探索太空”的话题，进 一步指出人类太空探索的未来发展趋势，即移居火星。通过阅读活动，学生可以了解人类移居火星的可能 性和挑战，进一步丰富对于人类太空探索的认识，同时激发自我探索未知的兴趣。二、语篇分析Whatl本语篇的标题HOMES ON MARS?(在火星上安家？),直接点出了探讨的话题。语篇介绍了人类移 居火星面临的困难以及对移居火星的展望，共分为四段，具体内容如下：第一段提出话题，援引两位科学家Stephan Hawking和Robert Zubrin的观点，阐明人类移居火星是未 来的发展趋势。第二段笔锋一转提出挑战，指出人类要移居火星就要在火星上仿建地球的生存环境，使之 升温从而适合人类居住。第三段进一步指出另一担忧，即人类移居火星后的身心健康问题。最后一段呼应 开头，展望未来，对人类移居火星充满信心。Why作者通过阐述人类移居火星面临的困难和解决办法，向读者展示了人类移居火星的美好前景。通过阅 读文本，学生可以进一步丰富自己对于人类太空探索的认识，了解人类移居火星的可能性和挑战，同时激 发自我探索未知的兴趣。How语篇采用了 “总一分一总”的结构方式，层次清晰；同时，也注重使用话语标记(signpost)加强段 落之间以及句子之间的逻辑性，如：在第二、三段表述人类移居火星遇到的挑战和解决办法时，使用了 however, one of the goals.is., another, one idea. is to. 等。语篇使用了丰富的词汇，如：与探索火星相关的词块包括：move into space to survive, spread out into space, establish ind叩endent colonies, terraform Mars;介绍移居火星的解决办法的词块包括：warm up, produce greenhouse gases, lead to rainfall and the growth of plants, feel bored, keep themselves busy with various activities 等。三、学情分析话题方面：随着人类太空探索的快速发展，学生对人类探索火星的话题比较熟悉，也比较感兴趣。词汇方面：学生对于人类探索火星的活动有所了解，但是对于用英语表述具体的问题和挑战以及解决 办法，还是存在一些困难，需要相关的语言学习和输入。内容方面：通过本单元前期的学习，学生已经对于太空探索话题有了较多的了解，包括：人类太空探 索的历史、航天成就、太空探索的困难、太空探索到底值不值得，对于人类太空探索的未来趋势，学生用 中文尚可交流。四、教学目标通过本课时学习，学生能够：1. 获取梳理人类移居火星的挑战和解决办法；2. 就人类移居火星发表自己的看法。五、教学重难点【重点】获取梳理人类移居火星的挑战和解决办法。【难点】就人类移居火星发表自己的看法。六、教学活动设计环节一：创设情境，导入话题，激活已知。(8mins)教师提问，学生分享自己对火星的了解。之后，教师播放本单元Video Time的部分视频，帮助学生了解 火星的概况。然后，教师介绍文章标题，引导学生预测文章内容。教学活动活动层次效果评价1. Ss share their knowledge of Mars by answering the question: What do you know about Mars?学习理解之感知与注意通过提问及观察学生反馈，了解其关于火星的已有知识和经验、对话题的2. Ss watch the video and get basic facts about学习理解之获取认知程度以及获取信息的情况。与梳理Mars by completing the sentences.3. Ss look at the title and the picture and make predictions about the content. What do you expect to read about in this text?环节设计意图：导入话题，激活学生的已知；引导学生根据标题预测文本内容为阅读活动做铺垫。环节二：通读课文，获取梳理文本主要信息。(18mins)活动层次学习理解之获取与梳理效果评价通过学生反馈，了解他们对文章大 意和作者态度的理解情况以及对文 本信息获取的情况。教师指导学生通读课文来验证自己的猜测，并且分析作者对于人类移居火星的看法。之后，教师引导学生 再读课文找出作者得出此结论的依据，从而梳理出人类移居火星的挑战和解决办法的相关信息。教学活动4. Ss read the text, check their predictions, and answer the questions:Is the content of the passage the same as what you expect? Whats the passage mainly about? What is the writer s conclusion about living on Mars?5. Ss read the text again and answer the question. What s the evidence for the writer s conclusion? (Ss share their own answers first in pairs andthen with the whole class.)环节设计意图：引导学生了解文章大意和作者态度，获取梳理文本中关于人类移居火星的重要信息。环节三：深入阅读语篇，完善新知。(7 mins) 教师顺势引导学生总结作者使用的写作手法，如：引用、举例子、提出问题和解决方法等。之后，引导观 察教材第83页活动2中的三个句子，指导学生联系上下文对斜体部分的句子做出正确的解释。活动层次应用实践之分析与判断应用实践之描述与阐释效果评价通过观察学生讨论情况以及倾听他 们的答案，通过适当的追问了解他 们的理解情况。教学活动6. Ss read the text again and discuss in pairs about the following questions. What writing techniques are used in this article? Where can you find these writing techniques in this article?7. Ss talk about what they know about Stephen Hawking and Robert Zubrin.8. Ss look at the sentences taken from the text and explain the italicized parts in their own words.环节设计意图：帮助学生了解文本写作方法，培养根据上下文正确理解句子的能力。环节四：复述文章，巩固内化；运用新知，发表对移居火星的看法。(7 mins)教师引导学生根据文章框架结构复述文章内容，并分享自己对文中Stephen Hawking所说的话的理解，然 后引导学生根据教材第83页活动4中的问题进行讨论，分享自己对人类移居火星的看法。教学活动9. Ss retell the text in groups based on the mind map.10. Ss read what Stephen Hawking said in Paragraph 1 and discuss in groups to share their own understanding.11. Ss discuss and share in groups about the idea of humans living on Mars based on the questions in activity 4 on page 83.活动层次应用实践之内化 与运用迁移创新之批判 与评价迁移创新之推理 与论证效果评价通过观察学生讨论情况以及倾听他 们的回答，通过适当的追问了解他 们对主题的理解。环节设计意图：引导学生深入理解文本，并在此基础上结合所学对话题进行批判性思考，发表自己的看法。作业与拓展学习设计Write an essay to give your opinion about the idea of humans living on Mars based on what you have discussed in class.WorksheetUnit 4 Reading and WritingActivity 1: Look and answerLook at the picture and answer the question.What do you know about Mars?Activity 2: Watch and completeWatch the video and complete the following sentences.(1) Mars is the fourth planet from the Sun and the smallest planet in the solar system.(2) Mars is about of the size of Earth.(3) Like Earth, Mars has volcanoes, valleys, polar ice caps, and weather.(4) Olympus Mons, the largest volcano on Mars, is about as high as Mount Qomolangma.Activity 3: Look and discussLook at the title and the picture, and then discuss the question.What do you expect to read about in this text?Activity 4: Skim, check and answer(1) Is the content of the passage the same as what you expect? What's the passage mainly about?(2) What is the writer's conclusion about living on Mars?Activity 5: Read and answerWhafs the evidence fbr the writer's conclusion?Activity 6: Discuss the following questions(1) What writing techniques are used in this article?(2) Where can you find these writing techniques in this article?Activity 7: Look and shareWhat do you know about them?Activity 8: Discuss and explainLook at the sentences taken from the text and explain the italicized parts in your own words.(教材第 83 页活动 2)Activity 9: Work in groups and retell the textActivity 10: Think and shareWhat do you think about what Stephen Hawking said in Paragraph 1?(教材第 83 页活动 3)Activity 11: Discuss and shareDiscuss the following questions in groups to give your opinion about the idea of humans living on Mars.(教材第83页活动4)(1) Do you think this will happen in the future? If yes, when and why? If no, why not?(2) What do you think are the main advantages and disadvantages of humans living on Mars?(3) Do you think it is a good idea for some people to move to Mars for good? Why or why not?(4) Would you like to live on Mars? Why or why not?Evaluation FormItemsPeer-evaluationTeacher-evaluationOpinions on humans living on Mars Language accuracy Language richness Fluency Pronunciation Logic and coherence HomeworkWrite an essay to give your opinion about the idea of humans living on Mars based on what you have discussed in class.