新湘教版9年级上Unit.doc

新湘教版9年级上Unit 4 Topic 2 Section B 教案The main activities are 1a and 3a. 本课重点活动是1a和3a。. Teaching aims and demands 教学目标1. Master some new words:clone, create2. Go on with the past simple passive：（1）When was it invented?（2）It was invented in 1879.3. Learn some information about “clone”. Teaching aids 教具录音机/多媒体课件（或教学挂图）. Five-finger Teaching Plan 五指教学方案Step 1 Review 第一步 复习（时间：10分钟）1. T: Yesterday we learned some great inventions. Do you remember what they are?Ss: Yes. They are digital camera, mobile phone, computer and MP3.T: Very good. Can you talk about them in pairs?Ss: Yes, we can.(组织学生对以上发明进行问答练习，既可以复习已学语言知识，也可以检查学生完成家庭作业的情况，同时又为导入新的目标语言打基础。学生主要回答如下内容。)S1: When was computer made?S2: It was made in 1946.S1: Where was it made?S2: It was made in America.S1: Whats it used for?S2: Its used for helping to work and study.T: Very good. Now, who would like to talk about the digital camera?(轮流谈论其他三项发明：数码相机，手机和MP3，然后将下列内容板书。) was made in 时间/地点is used for doing sth.2. T: There are many important technologies and inventions in the world today, such as the light bulb, the radio, the airplane, the car, the television, the telephone and so on. And we even have clone. What do you know about them? We are going to get more information today.(一边说一边将刚才提到的发明板书在黑板上，有条件的地方可利用多媒体播放自己制作的关于这些发明和新技术的课件，条件不允许的老师也可利用教学挂图、自制卡片或剪报等形式展示这些现代技术和新发明，并将其中三项发明提出，画成表格形式。)the light bulbthe radiothe airplane3. T: We have talked about so many inventions. But have you ever heard of clone?Ss: Yes, of course.T: So whats the name of the first cloned sheep?Ss: Dolly.T: When and where was it created?Ss: It was created in Scotland a few years ago.T: What technology is used in cloning?Ss: DNA.T: What other things has man cloned?Ss: Rabbits, cows, mice, pigs and some other animals.(如果学生预习了课文，就能够回答这些问题；如果学生不了解这些情况，老师可以用自问自答的形式帮助他们获取这些信息，为下一步对话和短文的教学提供知识基础，划线部分的单词在说话的同时板书在黑板上。)clone, createStep 2 Presentation 第二步 呈现（时间：5分钟） T: Lets listen to the tape and find out the answers to the following questions:1. Who invented the light bulb?2. When was it invented?（老师只将问题读给学生作为听的任务。播放录音，要求学生回答上述问题。）S1: Thomas Edison invented the light bulb. It was invented in 1879.（再播放一遍录音，要求学生将黑板上表格填好。）InventionInventorYearthe light bulbThomas Edison1879Guglielmo Marconi1903（为了帮助学生填好表格，老师也可以用提问的方式进行引导和检查完成的情况。）T：What did Guglielmo Marconi invent? When was it invented? Who was the airplane invented by? When was it invented? Please fill in the chart. Ill ask some of you to fill in the chart on the blackboard.（由两个学生到黑板上填表完成收音机和飞机的发明家和发明的年代，也可统一检查学生的答案。）Step 3 Consolidation 第三步 巩固（时间：10分钟） T: Now, look at the chart on the blackboard and try to say something about the three inventions we learned.(引导学生用表格中提供的信息，讲述三项发明的情况，教师要鼓励学生使用本课的目标语言：被动语态的一般过去时。)S1: The light bulb was invented by Thomas Edison in 1879.S2: The radio was invented by Guglielmo Marconi in 1895.S3: The airplane was invented by Wilbur and Orville Wright. It was invented in 1903.T：Well done! Now, suppose youre Jane and Michael. Youre visiting the Science Museum. Talk about the three inventions as we learned just now.（让学生有时间准备好这个对话，提醒学生可利用黑板上表格中的关键词汇。然后要求学生表演自编对话。）Group 1: S4: Look, the light bulb.S5: Yes, it was invented by Thomas（至少要有三组学生表演该对话。）Step 4 Practice 第四步 练习 （时间：15分钟）1. T：Boys and girls, do you want to know more inventions? Lets listen to the tape carefully and fill in the blanks in 2 on Page 87.（播放录音，然后检查个别学生答案，如发现有困难，可再播放一遍录音，为确保学生获得正确的信可采用提问的形式强调听力材料中的主要内容。）T: Who was the car invented by?Ss: Karl Benz.T: When was it invented?Ss: InT: What about the telephone?Ss: It was invented by Alexander Graham Bell inT: What did John Baird invent?Ss: He invented the television.T: When did he invent it?Ss: He invented it in（也可以让学生用自己的话来总结一下这三项发明，同样可以检查学生听和说的能力。）T：Please talk about the inventions in your own words. Group 1, please tell us something about the car.G1: The carT: Now, Group 2. Would you like to talk about the telephone or the television?G2:Wed like to talk aboutT: At last, its your turn to talk about(为活跃班级气氛，可采用男女竞赛或小组竞赛的形式。)2. T: You did very well in your lessons today. And were going to learn something new about a great inventionclone. Please read the passage in 3a carefully and follow me to underline the key words and expressions.（老师板书教材及其他相关知识点的关键词和短语，为学生复述短文做准备。）the cloned sheep, Scotland, is known as, a great experiment, rabbits, sheep, cows, mice, pigs, and some other animals, DNA, living things, human beings, every part of your body, finger, hair, own3. T: Read the passage again and mark (T) for True or (F) for False to these sentences.（1）The cloned sheep, Dolly, was created in Canada.（2）So far, scientists havent cloned any pigs.（3）Every part of our body has different DNA.（4）There is DNA in most living things.(学生做出判断后，检查答案。)4. T: Good job! Now, lets listen to the tape carefully and make sure you can read it correctly.（播放录音。）T: Now, please close your books. Look at the words on the blackboard. Can you say something about “clone”?（让学生用3分钟时间做准备，然后用接龙的方式进行复述。教师可提前对克隆的知识进行讲解并利用黑板上列出的中心词进行提醒。）T：The cloned sheep.S1: Do you know Dolly, the cloned sheep?T: Yeah. Its well-known.S2: Cloning is known as a great experiment all over the world.T: Good! S3: She was created in Scotland a few years ago.T: Rabbits, sheep, cows, mice, pigs and some other animals.S4: So far, man has cloned rabbits, sheep, cows, mice, pigs and some other animals.T: Excellent! Now, repeat what you said just now one by one, and you get the whole paragraph.(让刚才抢答的学生重复一遍自己所说的那句话，老师不再提示关键词，让学生按同样的方式继续进行接龙，为激发学生的兴趣，可分男女竞赛，看谁复述的句子又快，又多，又准确。)T: Living things and human beings.S5: There is DNA in all kinds of living things, including human beings.T: Every part of our body.S6: There is DNA in every part of our body.T: Finger and hair.S7: Our finger has the same DNA as our hair.（精心组织学生复述课文，并在此同时反复提示本课目标语言：be known as, be created, be used。在黑板上记录男女同学的竞赛结果，对胜者进行掌声鼓励。）Boys GirlsT: We have got the idea of clone. But what do you think of cloning? Do you think its terrible to see “another you”？Step 5 Project 第五步 综合探究活动（时间:5分钟）1. T: Discuss about cloning in groups of four. Check your opinion in the chart in 4.（学