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1、千叶帆服装资料分享社区 http:/ 4 Amazing ScienceTopic 2 When was it invented?Section BThe 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. Learn some new words:clone, experiment2. Go on learning the simple past passive voice:(1) Do you know when it was invented?(2) It was invented
2、in 1879. 3. Learn some information about the clone technology.(1) Cloning is famous throughout the world.(2) There is DNA in most living things, including human beings.(3) No doubt cloning can help save those animals in danger.(4) And it can also benefit human beings. Teaching aids 教具录音机/多媒体课件/图片. F
3、ive-finger Teaching Plan 五指教学方案Step 1 Review 第一步 复习(时间:6分钟)做游戏，复习一般过去时被动语态的用法，导入新课。1. (用上节课的作业做一个链式游戏，以小组为单位，就计算机、MP3、CD、手机、数码相机或学习用具等进行对话，操练be made of / be made in / be made from / be used for的用法。让每一小组的第一个同学回过头去问下一位同学，依次接着往下问。)T:Boys and girls. Lets play a game. Ask questions one by one. S1:Whats y
4、our favorite invention?S2:The MP3. Whats it made of?S3:Its made of steel and plastic. When was it developed?S4:It was developed around 1998. Whats it used for?S5:Its used for helping us to improve our English.2. (用多媒体出示图片，导入新课。)T:You did very well. There are many important technologies and invention
5、s in the world today. Look at this invention. (展示灯泡图片。)Its a bulb. Do you know about it?(板书并要求学生了解。)bulbSs:Yes, a little. T:OK, who invented it?Ss:Thomas Edison. T:When was the light bulb invented? Do you know?Ss:No. T:OK, lets come to 1a and learn about it.Step 2 Presentation 第二步 呈现(时间:17分钟)通过谈论各种发
6、明及其发明者和发明的时间，呈现1a和3a的内容，继续学习一般过去时的被动语态及生词。1. (让学生听1a录音并根据听力内容判断正误。)T:In this lesson, we will learn something about other inventions and technologies, please listen to 1a and mark True (T) or False (F).(1) The light bulb was invented in 1879. ( )(2) The radio was invented by Thomas Edison in 1895. (
7、)(3) The airplane was invented by Wilbur and Orville Wright in 1903. ( )(听后核对答案：(1) T (2) F (3) T。)2. (用图片继续谈论上述发明，引入3a。)T:Now lets go on talking about the inventions. Look at the picture! (出示收音机的图片。) Who invented it?T:It was invented by Guglielmo Marconi. (呈现收音机的发明年份和发明者的名字。)T:And when was it inven
8、ted?Ss:It was invented in 1895. T:Very good. And look at this picture. (展示一幅飞机的图片。) Who invented it? (同时呈现飞机发明年份和发明者的名字。)Ss:It was invented by Wilbur and Orville Wright. T:And when was it invented?Ss:It was invented in 1903. T:We have talked about so many inventions. Now we are going to learn someth
9、ing new about a great technology. (拿出图片。) Now look at this picture. What animal is it?Ss: Its a sheep.T: Yes, it is a cloned sheep. Have you ever heard of clone?(教师释义并领读clone，要求学生掌握。)cloneSs:Yes, of course. T:Thats very good. Cloning is a famous experiment throughout the world. So far, scientists ha
10、ve cloned many animals to save those animals in danger. The cloning technology has been used in human organs. It can benefit human beings.(板书并让学生掌握生词experiment；了解organ和benefit。)experiment, organ, benefitT:Then whats the name of the first cloned sheep?Ss:Dolly. T:Yes, now lets read 3a and answer the
11、following questions.3. (指导学生阅读3a，回答下列问题并核对答案，为完成3b作铺垫。同时画出文中的关键词及短语，为下一环节的课文复述作准备。)(板书下列问题。)(1) When and where was the cloned sheep created?(2) What other things has man cloned?(3) Whats used in cloning?(4) What are the advantages and disadvantages of cloning?(板书关键词及短语。要求学生理解AIDS。)Dolly, be created,
12、 famous throughout the world, DNA, in every part of your body, be similar to, save, benefit human beings, explore more ways to, heart disease, AIDS and cancer, however4. (让学生听3a并跟读，画出重点词组，教师板书。)T: Please listen to 3a and read after it. Find out the important phrases.(板书，要求学生掌握。)so far, be similar to
13、, the same as, no doubt(学生听完录音后，与教师板书的内容对照，并朗读3a课文，教师讲解本课重要词组。)Step 3 Consolidation 第三步 巩固(时间:9分钟)通过角色表演、复述等形式巩固1a和3a内容及一般过去时的被动语态。1. (两人一组分角色表演1a。) T:Please act out 1a in roles.2. (再读1a，完成1b。)3. (让学生再读3a并讨论3b中的问题，完成3b。)4. (指导学生用刚才自己所画的3a中的关键词，以接龙的方式复述3a。)T:Just now, weve learned something about clo
14、ning. Can you say something about it?S1:Dolly, a cloned sheep.T:Yeah. Its well-known. S2:Cloning is known as a great experiment all over the world. T:Good!S3:Dolly was created in Scotland more than ten years ago. S4:So far, scientists have cloned rabbits, sheep, cows, mice, pigs and some other anima
15、ls.T:Excellent! Now, repeat what you have said just now one by one, and you will get the whole paragraph. (让刚才抢答问题的学生重复一遍自己所说的那些话，教师不再提示关键词，让学生按同样的方式继续进行接龙。为激发学生的兴趣，可分组竞赛，看哪组复述的句子又快，又多，又准确。)Step 4 Practice 第四步 练习(时间:8分钟)设置情景，继续操练一般过去时的被动语态，完成2和4。1. (利用1a中有关发明的图片，让学生用一般过去时的被动语态讲述三项发明的情况。)T:Now, look at the pictures and try to say something about the inventions we have learned just now. (教师逐一呈现图片。)S1:The light bulb was invented by Thomas Edison in 1879. S2:The radio wa
