Topic 2 When was it invented?（2011年6月版）

Topic 2 When was it invented
Section A
The main activities are 1a and 2a. 本课重点活动是1a和2a。
Ⅰ. Teaching aims and demands 教学目标
1. Learn some new words:
metal, toothbrush, ink, recorder
2. Learn some useful sentences:
—What’s it made of/from
—It’s made of/from…
—What’s it used for
—It’s used for …
3. Learn the simple past passive voice:
(1)—When was it developed
—Around 1998.
(2)—Where was it developed
—It was developed in Korea.
4. Learn how to express hopes and wishes:
(1) I wish I could go into space some day.
(2) I hope your dream will come true.
5. Talk about new technologies and inventions.
Ⅱ. Teaching aids 教具
火箭模型/牙刷/墨水/纸/录音机/小黑板/MP3/各种发明的图片/魔盒
Ⅲ. Five-finger Teaching Plan 五指教学方案
Step 1 Review 第一步 复习(时间:6分钟)
师生对话，让学生尽量用被动语态叙述计算机的作用，引出生词rocket并导入新课。
T: Boys and girls, we’ve learned about the importance of computers. Can you tell me something about them in passive voice
S1: Computers are used by doctors to find diseases easily.
S2: Robots are controlled by computers to do dangerous work.
S3: In business, computers are used to place and cancel orders.
S4: Spaceships are mainly controlled by computers.
T: Well done! But do you know how the spaceships are sent up from the ground into space
S4: They are sent up by rockets. (帮助学生回答。)
(出示火箭模型，板书并帮助学生理解rocket。)
rocket
T: Look! This is a model rocket. What’s it made of What’s it used for Let’s come to 1a and talk about it.
Step 2 Presentation 第二步 呈现(时间:13分钟)
用具体实物设置情景，师生对话，学习生词和新句型。找出关键词句和目标语言，为交际积累材料。
1. (师生对话，用实物引出生词，学习新句型。)
T: (让学生摸一摸火箭模型) What’s it made of
S1: It’s made of “金属”.
T: Yes, it’s made of metal.
(板书句型及生词，并让学生掌握。)
metalWhat’s it made of It’s made of metal.
T: Do you know what a rocket is used for
Ss: It’s used for sending spaceships into space.
T: Yes, it’s used for sending spaceships or satellites into space.
(板书句型并要求学生掌握，帮助学生理解satellite。)
satelliteWhat is a rocket used for It’s used for sending satellites or spaceships into space.
(摸出牙刷。)
T: How do you say this in English, S2
S2: Sorry, I don’t know.
T: OK, it is a toothbrush.
(板书toothbrush，领读并要求学生掌握该单词及复数形式。)
toothbrush toothbrushes
T: (手拿牙刷问)What’s it used for
S2: It’s used for brushing teeth.
T: What’s it made of, S2
S2: It’s made of plastic.
T: Very good! You’re right.
(摸出一瓶墨水。) What’s this in English, S3
S3: Sorry, I don’t know.
T: It’s a bottle of ink.
(板书，领读并要求学生掌握。)
ink
T: Do you know what it is used for
S3: It’s used for writing.
(从魔盒中摸出一张纸，做神秘状。)
T: How do you say this in English, S4
S4: It’s a piece of paper.
T: Can you tell me what it is made from (让其摸一摸，看一看。)
S4: Sorry, I can’t.
T: Let me tell you. It is made from wood. (说的时候语速要慢，重音放在from。)
(引导学生总结be made of与be made from的区别。板书并解释。)
be made of + 材料：表示原材料容易被看出。be made from + 材料：表示原材料经过化学变化，不易被看出。
2. (让学生不要打开课本，听1a，回答下列问题，听后核对答案。)
T: Don’t open your books. Listen to the tape carefully and try to find out the answers to the questions.
(出示小黑板。)
(1)Why is Jane unhappy (2)Who made the model rocket (3)What is a rocket used for
(核对答案。)
3. (让学生打开课本，找出疑难句。教师出示小黑板。)
I’m not allowed to play computer games.It’s made of metal.It’s used for sending…into…I wish I could go into space some day.(解释此句使用了虚拟语气，在此只要求了解。)I hope your dream will come true.
Step 3 Consolidation 第三步 巩固(时间:8分钟)
巩固1a及be made of/from, be used for的用法。完成1b。
1. (让学生打开课本，再听1a录音，学生跟读，感受纯正的语音语调。)
T: Open the books, listen to the tape and read after it. Pay attention to the pronunciation and intonation.
2. (让学生找出对话中的关键词，教师板书。然后让学生根据关键词两人对话复述1a。)
T: Boys and girls, let’s find out the key words together, OK
(板书)
Jane→unhappy / be not allowed to / be bad forKangkang→a model rocket / be made of metalbe used for / satellites or spaceships / learn… from…/ wish/ hope/ come true
3. (让学生认真阅读1b中的例子，然后让他们仿照例子用实物编对话，完成1b。)
T: In 1b, we can see two dialogs. Read them carefully and pay attention to the sentence patterns, “be made of”, “be made from” and “be used for”. Make similar conversations in pairs.
Step 4 Practice 第四步 练习(时间:13分钟)
由一般现在时的被动语态，引出一般过去时的被动语态并加以操练。引出2a的内容，展开任务型活动，让学生掌握目标语言。完成2b。
1. (继续操练be made of/from及be used for的用法。)
T: (老师手指录音机问。) Boys and girls, what’s this in English
Ss: We don’t know.
T: It’s a recorder.
(板书生词并让学生掌握。)
recorder
T: What’s it used for
Ss: It’s used for helping us to improve our English. (引导学生回答。)
T: Yes, what is this (从魔盒里拿出MP3。)
Ss: It’s an MP3 player.
T: Yes, it was developed in Korea. It’s more useful than a recorder.
(板书画线句子让学生观察，并与一般现在时的被动语态相比较，帮助学生总结出一般过去时被动语态的构成并举例作适当讲解。)
was/were+及物动词的过去分词It was developed in Korea.The bridge was built in 1990.The cup was used in old days.
T: (手拿MP3问。) When was it developed And what’s it used for Let’s listen to 2a.
2. (放录音，听后核对答案。)
T: S1, answer the questions, please!
S1: The MP3 player was developed around 1998. It’s used for helping us to improve our English. It’s more useful than a recorder.
3. (让学生阅读2a对话，找出关键词，为下一步活动做准备。)
T: Read 2a, and underline the key words.
(板书关键词。)
an MP3 player, be used for,help us to improve our English, develop,around 1998, Korea, more useful, recorder, buy
4. (指导学生利用黑板上的关键词复述2a对话，巩固一般过去时被动语态的句型。完成2a。)
T: Who would like to retell 2a S2, please!
S2: Kangkang is listening to MP3. It’s very nice. It’s used for helping us to improve our English. It was developed in Korea around 1998. It’s more useful than a recorder.
T: Very good!
5. (指导学生完成2b。师生互动，提高学生口语表达能力。)
Example:
T: How do you say it in English
Ss: Digital camera. (帮助学生回答。)
(板书digital，要求学生理解。)
digital
T: When was it developed
Ss: It was developed in 1975.
T: Where was it developed
Ss: It was developed in America.
T: What’s it used for
Ss: It’s used for taking photos.
T: Do you understand Practice the dialogs with your partner. Let’s begin.
…
Step 5 Project 第五步 综合探究活动(时间:5分钟)
利用各种发明的图片操练一般过去时的被动语态，让学生在探究中锻炼语言综合运用能力。
1. (收集各种发明的图片，如传真机、汽车、火车等，学生可以在谈论自己感兴趣的发明中不断地使用was developed in / be made of / be used for这些目标语言。)
2. Homework:
T: Please write down a short passage about your favorite invention in your exercise books.
板书设计：
When was it invented Section Atoothbrush 1)I wish I could go into space some day.toothbrushes I hope your dream will come true.be made of 2)— When was it developed be made from — It was developed around 1998.be used for — Where was it developed — It was developed in in Korea.
Section B
The main activities are 1a and 3a. 本课重点活动是1a和3a。
Ⅰ. Teaching aims and demands 教学目标
1. Learn some new words:
clone, experiment
2. Go on learning the simple past passive voice:
(1) Do you know when it was invented
(2) It was invented 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.
Ⅱ. Teaching aids 教具
录音机/多媒体课件/图片
Ⅲ. Five-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. Let’s play a game. Ask questions one by one.
S1: What’s your favorite invention
S2: The MP3. What’s it made of
S3: It’s made of steel and plastic. When was it developed
S4: It was developed around 1998. What’s it used for
S5: It’s 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 inventions in the world today. Look at this invention. (展示灯泡图片。)It’s a bulb. Do you know about it
(板书并要求学生了解。)
bulb
Ss: 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, let’s 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. ( )(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 let’s 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 invented
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 something new about a great technology. (拿出图片。) Now look at this picture. What animal is it
Ss: It’s 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。)
clone
Ss: Yes, of course.
T: That’s very good. Cloning is a famous experiment throughout the world. So far, scientists have 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, benefit
T: Then what’s the name of the first cloned sheep
Ss: Dolly.
T: Yes, now let’s read 3a and answer the 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) What’s 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, 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, however
4. (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, 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, we’ve learned something about cloning. Can you say something about it
S1: Dolly, a cloned sheep.
T: Yeah. It’s 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 animals.
…
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 was invented by Guglielmo Marconi in 1895.
S3: The airplane was invented by Wilbur and Orville Wright in 1903.
2. (让学生先看2的内容，然后播放录音。)
T: Boys and girls, do you want to know something about other inventions Let’s listen to the tape carefully and complete 2 on Page 87.
(听后检查部分学生答案，视情况需要，可再播放一遍录音。然后就听力内容提问，鼓励并引导学生积极踊跃回答。)
T: Who was the car invented by
S4: Karl Benz.
T: When was it invented
S4: In …
T: What about the telephone
S5: It was invented by Alexander Graham Bell in …
T: What did John Baird invent
S6: He invented the television.
T: When did he invent it
S6: He invented it in …
(让学生分成三组分别讨论这三项发明，并用自己的话复述2中的部分内容，完成2。)
T: Now, please talk about the inventions in your own words. Group 1, please tell us something about the car.
G1: The car …
T: Now, Group 2, would you like to talk about the telephone or the television
G2: We’d like to talk about …
T: Group 3. It’s your turn to talk about ...
3. (用多媒体展示一些图片，并要求学生用过去时的被动语态造句。巩固本课的语言点。完成4。)
T: Make up sentences according to the example and practice more.
Example:
(展示电脑图片并板书生词laptop，要求学生了解。)
laptop
S4: Where were laptops invented
S5: They were invented in Japan.
S4: When were they invented
S5: They were invented in 1985.
(展示神舟七号发射图。)
Ss: ShenzhouⅦ was launched into space in China in 2008.
…
Step 5 Project 第五步 综合探究活动(时间:5分钟)
把学生分为几组，每个学生写下自己所知道的发明，由组长汇总，然后小组讨论，让学生课后发挥各自的想象力，设计一个实用的发明并介绍其用途、性能等，培养学生的探究能力。
1. (组内调查后，让学生尽量用一般过去时的被动语态来描述搜集的发明及其发明者、发明时间、发明地、用途等，并由组长向全班作汇报。)
2. Homework:
According to your imagination, design your own invention. Then write an article to introduce it.
板书设计：
When was it invented Section Bexperiment (1)It was widely used in people’s daily life.so far (2)—When was it invented —It was invented in …(3)Cloning is famous throughout the world.(4)—Where were laptops invented —They were invented in Japan.
Section C
The main activity is 1a. 本课重点活动是1a。
Ⅰ. Teaching aims and demands 教学目标
1. Learn some new words and phrases:
servant, for certain, housework, make a contribution to
2. Learn some useful sentences:
(1) No one knows for certain, but most people think that robots will be part of our lives.
(2) In short, this robot is very useful to us.
3. Discuss the advantages and disadvantages of robots.
Ⅱ. Teaching aids 教具
录音机/图片/幻灯片
Ⅲ. Five-finger Teaching Plan 五指教学方案
Step 1 Review 第一步 复习(时间:8分钟)
检查作业，然后以师生互动形式，复习一般过去时的被动语态。培养学生热爱科学的精神。
1. (检查上节课的作业，让学生汇报自己的发明成果。)
T: Now I’ll check up the homework of Section B and choose some students to report their results.
2. (出示幻灯片，让学生根据幻灯片上的图表，用过去时的被动语态做对话练习。)
Invention Inventor Year
car Karl Benz 1885
radio Guglielmo Marconi 1895
light bulb Thomas Edison 1879
T: Boys and girls, we have learned many inventions during the last period. Look at the table and make dialogs like this:
A: When was the car invented
B: It was invented in 1885.
A: Who was the car invented by
B: It was invented by Karl Benz.
T: OK! Who can work in pairs You two, please!
S1: When was the radio invented
S2: It was invented in 1895.
S1: Who was the radio invented by
S2: It was invented by Guglielmo Marconi.
(再找两组学生做类似对话。)
T: Well done. You learned a lot. Now, let’s talk about more inventions.
Step 2 Presentation 第二步 呈现(时间:10分钟)
以师生互动等形式，呈现本课新知识。通过让学生听录音并找出关键词，培养学生的听力及阅读理解能力。
1. (师生互动，导入新课。)
T: We have learned many inventions such as computers, digital cameras, TV sets and light bulbs. Which invention do you like best Can you tell me
S1: Computers.
S2: Cars.
S3: …
T: Why do you like computers best, S1
S1: Because I can learn a lot on the computers. Playing computer games is very exciting.
T: But you shouldn’t spend too much time on them. It is bad for your study. Which invention would you like to own, S3
S3: I’d like to own a cellphone. It can help me communicate easily.
T: Very good. Anyone else
S4: I’d like to own a car. It’s very convenient.
T: But I’d like to own a robot. Because I always feel very tired after work and I don’t feel like doing any housework.
(教师板书，并要求学生掌握。)
housework
T: So I’d like a robot to help me do a lot of housework. It can cook for me. It can clean the house for me. In cold winter, it can wash clothes for me. It’s dangerous for me to clean the outside of the windows. OK, let the robot do it. Ha! It behaves just like a servant.
(板书，要求学生理解behave；掌握servant。)
behaveservant
T: With the robot’s help, doctors can examine the insides of their patients’ bodies. It has made a contribution to humans’ health.
(板书并要求学生理解contribution；掌握词组make a contribution to。)
contributionmake a contribution to
Ss: That’s very interesting.
T: Yes. Study hard, and I’m sure you can make a contribution to our country.
(教师展示机器人图片。)
T: Look! This is a robot. Will it be friendly or unfriendly to people No one knows for certain.
(板书，并要求学生掌握。)
for certain
T: With the development of technology, maybe robots will think and act for themselves. They will no longer want to be our servants, but our masters. Do you think it is very dangerous Maybe there will be a war between robots and human beings.
2. (播放1a录音，让学生在文中画出关键词和短语。)
T: Boys and girls, we’ve learned something about robots. And today we’ll learn a passage about robots. First listen to the tape carefully and find out the key words and expressions.
(板书关键词和短语。)
no one, most people, our lives, robots, caused, work for us, help, dangerous and difficult work, people, surprised, think and act, one scientist, warns, want to be our servants, treat, war, human beings
Step 3 Consolidation 第三步 巩固(时间:13分钟)
让学生讨论1c中的问题，探讨机器人将给人类带来的利和弊，培养学生的科学探究精神。让学生根据关键词复述1a，培养学生综合运用语言的能力。
1. (让学生再读1a, 分小组讨论1c中的问题。)
T: Read the passage by yourselves and discuss the questions in 1c in groups.
(把整个班级分成四个小组，每个小组选择并讨论其中一个问题。教师提问检查讨论结果。)
T: Group 1, which question did you talk about
G1: Question 1.
T: Do you think that robots will be part of our lives in the future
G1: Yes, we think so. They can help us do some dangerous and hard work. They work fast and they are never tired.
T: Group 2, what did you talk about
G2: We talked about Question 3. We don’t think robots can think or act for themselves. Human beings created robots. So we can control them. Robots can work for human beings, and they don’t complain. They can’t think for themselves.
T: Maybe you are right. Now it’s your turn, Group 3. Which question did you choose to discuss
G3: Question 2. We don’t think robots are meant to be our servants. They are important. They can do a lot of work for us. But we mustn’t treat them as our servants. They should be our friends. We can talk with them.
T: Yes, I agree with you. And what do you think of the title, Group 4 Why does the title have a question mark
G4: Because the writer is not sure whether robots will be our servants in the future. (or the writer doesn’t think that robots will be our servants. )
2. (学生两人一组，利用黑板上的关键词，复述课文。教师鼓励并动员全员参与活动，然后请几名学生向全班复述。)
T: After the discussion, you can try to retell the text in 1a according to the key words on the blackboard. I’ll ask some of you to retell it in the front. Be brave and have a try, please!
3. (出示幻灯片，让学生完成下面对机器人的介绍，进一步巩固对文中出现的关键词和短语的掌握。)
T: Please fill in the blanks according to 1a.
So far, robots haven’t us any problems. They work for us like all the time. They help us do and work. People are at the development of robots. In a few years, perhaps robots will think and for themselves. However, robots can think for themselves, problems may . Perhaps there will be a between human beings and robots.
T: Read 1a again. Check the answers.
Step 4 Practice 第四步 练习(时间:8分钟)
通过单词释义、听力训练等活动帮助学生更好地掌握本课所学的内容。
1. (教师简单介绍解题方法，学生完成1b，师生一起核对答案。)
T: OK. Please find out and circle the words in 1a according to the meanings in 1b. Then write
them down. You can work in pairs if necessary. Then we’ll check the answers together.
2. (播放2录音，让学生完成2。)
T: Let’s listen to the tape, and finish 2 by yourselves. We’ll listen to the passage twice.
(听完后，核对答案。)
答案：
1. greatly 2. medical 3. health
4. inside 5. discovering 6. effects
(为了使学生加深对所听内容的理解，可以创设一些问题让别学生回答。)
Example:
T: What is the X-ray machine used for
S1: It is used for examining the inside of patients’ bodies.
T: Why should it be used properly
S2: Because it has some bad effects on our health.
…
Step 5 Project 第五步 综合探究活动(时间:6分钟)
学生通过小组合作，设计一个机器人，并写一篇有关该机器人的文章。
1. (学生四人一组，设计一个机器人。并讨论3中的五个问题，然后写一篇短文。)
T: Boys and girls, work in groups of four. Design a robot. Then discuss the questions in 3 together. Write a short passage about it.
2. (教师提问一些学生做口头描述，对写短文可能遇到的问题进行提示，完成3。)
T: Now, I will ask some of you to make a report. After that, write it down in your exercise books.
3. Homework:
Think it over and make a similar card for your robot.
Name:________________________________Inventor:______________________________Year:_________________________________Use:__________________________________
板书设计：
When was it invented Section Cservant 1)It has made a great contribution to human’s health.houseworkfor certain 2)In short, this robot is very useful to us.
Section D
The main activities are 1a and 3. 本课重点活动是1a和3。
Ⅰ. Teaching aims and demands 教学目标
1. Learn a new phrase:
run away
2. Learn some useful sentences:
(1) This method worked well at night as long as the weather was good and the stars could be seen.
(2) To his surprise, when he was using the cellphone, he was caught by the police.
3. Review the simple past passive voice.
4. Talk about new technology GPS.
5. Delevop the students’ imagination and creativity by designing their own inventions.
Ⅱ. Teaching aids 教具
实物或图片/多媒体课件/录音机
Ⅲ. Five-finger Teaching Plan 五指教学方案
Step 1 Review 第一步 复习(时间:8分钟)
教师出示图片，创设情景，复习一般过去时被动语态的用法。激发学生的兴趣，培养学生的口语表达能力，为导入新课作准备。
(利用实物或图片，以师生问答形式复习一般过去时的被动语态及重要词组和句型。)
T: How are you, boys and girls
Ss: Fine, thank you. And you
T: I’m very well. So far, we have learned something about the inventions in the world. Do you remember them all
Ss: Yes, we have learned the light bulb, the car, the cellphone, TV set, the digital camera, the MP3 player …
(出示MP3的图片。)
T: Very clever. Please look at the picture. What’s this in English
S1: It is an MP3.
T: What’s it used for
S2: It’s used for listening to music.
T: What’s it made of
S3: It’s made of plastic.
T: Where was it invented
S4: It was invented in Korea.
T: When was it invented
S5: It was invented around 1998.
T: OK, very good.
(出示手机的图片。)
T: When was the cellphone invented
S6: It was invented in 1973.
T: Where was it invented
S7: It was invented in America.
Step 2 Presentation 第二步 呈现(时间:12分钟)
创设语境，呈现新词汇。然后阅读1a，完成1b。让学生了解全球定位系统，培养学生的快速阅读能力。
1. (紧承上面的话题，以手机为切入点，导入新课。)
T: Cellphones are widely used all over the world. It’s reported that over 93% of families in cities own cellphones, but cellphones could be lost easily. Have you watched the movie “A World without Thieves”
Ss: Yes.
T: In the movie, a lot of cellphones were stolen by “Liu Dehua”. We all know that a thief would run away very quickly and then hide in a secret place as soon as he or she steals a cellphone. In the past, he or she couldn’t be found. But nowadays, one of the new technologies can be used to find the lost cellphones easily. Is it amazing OK, let’s read 1c and think about the question: Why could the lost cellphones be found easily now
(板书并要求学生理解thief和其复数形式thieves；掌握run away。)
thief thievesrun away
(一分钟后。)
T: Have you finished reading Do you want to know the answer Well, let’s begin the new lesson.
2. (播放多媒体，简单介绍GPS，让学生了解其意义，展示GPS的背景知识。)
T: Look at the screen. GPS is short for the Global Positioning System.
(板书并要求学生理解。)
global
T: GPS is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. The early explorers used the stars as landmarks to know where they were and in which direction they were going. This method worked well at night as long as the weather was good. But it didn’t work so well during the rest of the time.
(板书并要求学生了解。)
landmark
3. (播放1a录音。要求学生认真听录音并注意画出关键词。教师板书。)
T: Boys and girls, just now I talked something about GPS. Now let’s listen to the tape to learn a passage about GPS, please underline the key words.
(板书)
explored, explorers, landmarks, find out, direction, as long as, the rest of the time, problem, like, use, shape, great invention
Step 3 Consolidation 第三步 巩固(时间:8分钟)
利用关键词及1b中的问题复述1a，完成1c。巩固所学的知识，提高学生的英语表达能力。
1. (让学生阅读1a，然后讨论1b中的问题，四人一组完成1b。)
T: Please read 1a carefully and discuss the questions in 1b in groups of four, then finish 1b.
(学生讨论完后，小组长要整理好答案汇报。教师抽查部分小组的答案，再归纳总结。)
2. (根据板书的关键词来复述1a，分男、女两组以竞赛方式进行，激发学生的兴趣，熟悉所学的知识。)
T: Boys and girls, let’s begin our competition to retell 1a. Explored.
Girls: That was a big question when we first explored our world long ago.
T: Explorers.
Boys: The early explorers found that the stars in the sky were good landmarks.
T: Find out.
Girls: Using the stars, they could find out where they were and in which direction they were going.
T: As long as.
Boys: This method worked well at night as long as the weather was good and the stars could be seen.
T: The rest of the time.
Girls: But it didn’t work so well during the rest of the time.
T: Problem.
Boys: But it didn’t work so well during the rest of the time. That was a problem.
T: Like.
Girls: GPS is like a man-made star.
T: Use.
Boys: We can use it at any time, in any place and in any weather to find out our position.
T: Shape.
Girls: GPS can also be used to study the shape of the earth.
T: Great invention..
Boys: GPS is a great invention that helps us explore our planet and discover where we are.
T: OK, Well done! Boys and girls are all excellent.
3. (归纳总结，回应呈现部分，完成1c。)
T: Now, we have known GPS very well. I think you have found out the answer to the question. S1, could you tell me why the police could catch the thief easily
S1: Because of GPS.
T: That’s right. When the thief was using the cellphone, the police could use the information GPS offered to find out the position of the cellphone. So we can say it was GPS that helped the police catch the thief. S2, what do you think GPS will be used for in the future
S2: It can be used to study the shape of the earth.
T: What do you think of it, S3
S3: We can use it at any time, in any place and in any weather to find out our position.
T: OK, in short, it is very useful to us.
Step 4 Practice 第四步 练习(时间:13分钟)
让学生自主归纳本话题的语言项目，然后听2a和2b录音，完成2a和2b。复习一般过去时被动语态的用法和本话题的功能意念句，培养学生自主学习能力。
1. (让学生整理本话题的语言点、重点句型并放入自己的“百宝箱”。培养学生自主学习和归纳总结的能力。)
(语言点及重点句型。)
be made of / from be developed / invented in / bybe used forI hope your dream will come true.I wish I could go into space some day.It is said that …Your fingernails have the same DNA as your hair.be similar toNo one knows for certain. People are surprised at the rapid development of robots.They will no longer want to be our servants, but our masters. as long asIn short, this robot is very useful to us.
(学生做完后，教师进行抽查并指导。)
2. (让学生听2a和2b的录音，并跟读。然后完成下面的练习。)
T: Listen to 2a, 2b and read after them. Then finish the following exercises.
(将下面的句子由主动语态变为被动语态，或者将被动语态转化为主动语态。)
(1) I learned a lot of information about spaceships from Mr. Lee.
(2) I was allowed to play computer games yesterday.
(3) The digital camera was invented in 1975.
(4) Guglielmo Marconi invented the radio in 1895.
(5) ShenzhouⅥ was launched by China in 2005.
(答案)
(1) A lot of information about spaceships was learned from Mr. Lee by me.
(2) They allowed me to play computer games yesterday.
(3) People invented the digital camera in 1975.
(4) The radio was invented in 1895 by Guglielmo Marconi.
(5) China launched ShenzhouⅥ in 2005.
3. (给出本话题中的功能意念句或其他重点句型，两人一组进行游戏。让一个学生说出一个句子的前一部分，另一个学生必须快速说出整个句子，然后交换角色。统计说完所有句子的时间，时间最短的为优胜者。完成2b。)
T: Boys and girls, let’s play a game. I will give you some important sentences of this topic on the blackboard. You play the game in pairs. One says the front part of a sentence, the other says the whole sentence as quickly as possible. Then exchange the roles. Just like this:
A: I wish…
B: I wish I could go into space some day.
Are you clear
Ss: Yes.
T: The pair that finishes in the shortest time is the winner. OK, begin!
(1) I wish I could go into space some day.(2) I hope your dream will come true.(3) There is DNA in most living things, including human beings.(4) No one knows for certain, but most people think that robots will be part of our lives.(5) In short, this robot is very useful to us.
Step 5 Project 第五步 综合探究活动(时间:4分钟)
学生小组合作，设计一个新发明，并画出来，完成3。培养学生合作与探究的精神。
1. T: Look at Kangkang’s invention and the information. What’s the name of his invention
Ss: Plar.
T: When was it invented
Ss: It was invented in 2010.
T: What’s it used for
Ss: It’s used for both flying and driving.
T: Good! Do you want to be an inventor
Ss: Yes.
T: OK! Discuss in groups and design your own invention. You’d better draw a picture of it and write down the information about it. Are you ready
Ss: Yes.
T: OK, start please.
(学生小组合作。完成后，选几名学生谈论他们的新发明。)
2. Homework:
Search the Internet for more technologies and inventions. Share them with your classmates.
板书设计：
When was it invented
Section Drun awayGPS: the Global Positioning SystemThis method worked well at night as long as the weather was good and the stars could be seen.To his surprise, when he was using the cellphone, he was caught by the police.
be similar to
the same as
no doubt