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牛津译林版高中英语必修五Unit3《Scienceandnature》教案2教材：牛津高中英语(模块五)高二上学期文档内容：教学设计—教案单元：Unit 3 Sci ence and nature板块：TaskThoughts on the design:作为Task的第二课时，要紧任务是关心学生完成书信的写作，要通过一系列的步骤让学生体会到如何样才能写结构准确、内容丰富、句型规范的书信。
因此，在本课时中设计了从内容设定、句子构造、首末段构造、整体写作的几个步骤，以小组讨论和个人独立完成的形式穿插进行。
Teaching aims:After learning Task2, students will be able to1.choose proper contents for a formal letter.2.develop key words into good sentences.3.develop good beginning and ending paragraphs.4.keep in mind the format of a formal letter.5.have a general view of what is a piece of good writing through cross-check. Teaching procedures:Step 1 Task to complete (PPT4-5)Retell students what they are going to write again.[Explanation]在课堂的一开始重申写作的内容，能够关心他们回忆上节课所学，并进一步明确学习目标。
Step 2 What to contain in the letter (PPT5-7)1.Students work in groups to decide what information to be contained in the letter.Key words only. And do oral reports. The teacher can give some suggestions.2.Students work individually to develop these key words into complete sentences.3.Students work in groups to compare and improve their sentences.4.Ask some students to read their sentences aloud and the teacher can make somecomments so that to make it clear to students what kind of sentences are better wanted.[Explanation]通过上一课时的学习，学生关于克隆食品差不多具有了相当的知识积存，因而他们差不多具备了初步的判定力，在信中能够写或者应该写些什么内容，以小组的形式让他们进行讨论，充分发挥他们的主体性，然后教师能够提出一些建议进行增删。
牛津译林版高中英语必修五Unit3《Scienceandnature》教案1教材：牛津高中英语(模块五)高二上学期文档内容：教学设计—教案单元：Unit 3 Science and nature板块：TaskThoug hts on the design:Task部分分成两个课时。
第一课时向学生整体出现Task部分的目标，即写一封有关转基因食品的正式书信，并为学生创设一个简单的情形，然后通过听力、阅读短小篇幅的文章增加学生对转基因食品的了解，最后设计一个采访活动，让学生以小组为单位进行。
在课堂的最后做一个小结。
Task部分尽管最终任务是写一封信，但这关于学生来说不存在难度，难的是信中所涉及的内容。
关于专业性比较强的内容，通过如此的安排，让学生逐级加深了解，然后再把所了解到知识在实际中加以运用，符合了学生对新知识的同意特点，也在第一课时完成了信件内容相关信息的积存过程。
Teaching aims:After learning Task, students will be able to1.confirm information by changing or correcting some details.2.know some general knowledge about cloned food.3.conduct an interview using some use ful expressions.Teaching procedures:Step 1 Present the learning objective (PPT4-8)1.Present the letter on Page 56. Ask students to scan the letter to find out themain idea. ( Clearly state the anti-c loning opinion and reasons for that)2.Tell students the learning objective of this period and next period is to makea “copy”of this letter. And this period will focus on building up materials.3.Topic: Cloning. ( + quiz about cloni ng / listen to check)Situation: A local supermarket is planning to sell cloned food and you want to write to tell your opinions.Content of the letter: Your opinions on cloned food and supporting details [Explanation]先向学生出现Task部分最终要完成的任务是什么模样的，内容应该是个人观点，从而让学生产生学习的需要。
Unit3 Science and nature Welcome to the unit教材：牛津高中英语(模块五)高二上学期文档内容：教学设计—教案单元：U nit 3 Science and nature板块：Welcome to the unitThoughts on the design:从课型来讲，本课时作为整个单元的导入部份，主如果以口语表达为主，从内容来讲，本课时作为整个单元的第一课时，要解决两个问题。
第一是向学生介绍整个单元的主题和将要学习和讨论的内容，第二是要为进入阅读部份作一些内容的预备和铺垫。
基于如此的考虑，本课时主要包括两个部份，即单元主题呈现（科学对抗自然）和阅读前预备（克隆）。
以一段有关增高术的听力作为切入点，带出主题，然后以图片为媒介引导学生进行一系列的讨论，在充分理解了本单元的主题以后，进入另一层面，专门针对克隆进行生动的讨论和辩论，让学生充分展示出他们对这一专题有所了解，并让他们熟悉到他们对这一专题还需要进一步的阅读才能更好得表达出他们的观点。
这就为后面的阅读作了充分的铺垫。
Teaching aims:After learning Welcome to the unit, the students will be able to1.think more about the relationship between science and nature.2.describe some items and atmosphere with scientific terms.3.express their opinions on cloned animals and humans as well.4.develop an interest in doing more reading and research on the topic. Teaching procedures:Step 1 Lead in (PPT 4-7)Play a dialogue about height-increasing operations and ask students to fill in the blanks. After checking the answers, allow some time for students to freely express their opinions on height-increasing operations, thus introduce the major topic “science versus nature”。
Unit3 Science and nature Reading教材：牛津高中英语(模块五)高二上学期文档内容：教学设计—教案单元：Unit 3 Science and nature板块：ReadingThoughts on the design:本节内容主要目标是让学生通过主体阅读发现如何去表达正反面的观点。
进而要求他们继续读43页上的两封信，让他们了解如何就正面或反面的一个观点进行重点论述。
在课堂的最后可以结合本单元的大主题做一个简短的总结，可以进一步引发学生的思考，使得这篇文章并不仅仅是一篇阅读文章，而是一篇具有社会和现实意义的文章。
鉴于文章内容比较严肃，，单纯的阅读和讨论容易让课堂气氛陷入沉闷，因此安排了不同的阅读方法，从不同的角度调动学生的阅读积极性。
Teaching aims:After learning The perfect copy, students will be able to:1. use some useful phrases to state their “for and against” opinions on anatmosphere.2. write a persuasive article using supporting details.3. do conversion between book knowledge and their own knowledge.4. persuade using their voices.5. concern more about the relationship between science and nature.Teaching procedures:Step 1 lead in (PPT 4-5)1. Start the lesson by a brief review of what students have talked about cloning.2. Present the learning objective of this period, which is to get more knowledgeabout cloning, and grasp effective ways to express positive and ne gative opinions.3. Prediction based on the title. What attitude does the author hold towards cloning,positive or negative or neutral?[Explanation]基于上一课时已经对克隆这一话题有所涉及，本节的导入以单刀直入、承上启下为特点。
