仁爱9年级上 Unit4 Topic2 Section D教案

The main activities are 1a and 4. 本课重点活动是1a和4。

Ⅰ. Teaching aims and demands 教学目标

1. Learn useful expressions:

as long as, in short

2. Sum up the simple past passive voice.

3. Talk about new technology and inventions.

Ⅱ. Teaching aids 教具

讲解GPS的有声多媒体课件(没条件的就用小黑板事先写好。)/标有发明物的卡片/录音机

Ⅲ. Five-finger Teaching Plan 五指教学方案

Step 1  Review 第一步  复习(时间:13分钟)

1. (师生互动，带学生一起复习归纳本话题的语法及语言点。激发学生的兴趣，培养学生的口语表达能力。)

T: How are you, boys and girls?

Ss: Fine, thank you. And you?

T: I’m very well. This week we have learned something about the new technology and inventions

in the world. Do you remember them all?

Ss: Yes, we learned the light bulb, the car, the airplane …

T: Very clever. But who can tell me when the light bulb was invented? And who invented it?

S₁: It was invented in 1879.

S₂: I’m not sure, but it was invented by Thomas Edison.

T: Do you remember the English Learning Machine?

Ss: Yes.

T: When was it developed?

Ss: Around 2005.

T: Where was it developed?

Ss: I’m not sure, maybe it was developed in the Beijing Ren’ai Education Institute.

T: OK, very good.

(板书)

When was it developed? Around 2005. Where was it developed? It was developed …

T: (出示小汽车的卡片)

When was the car invented?

S₁: It was invented in 1904.

T: Where was it invented?

S₂: It was invented in Germany.

T: (出示MP3的图片)

Ss: The MP3 was invented in 1998. It was made in Korea.

T:…

(教师用这种方式对本话题所学过的所有发明物进行复习，最后归纳，导出今天要学

的内容。)

T: You did very well. Today we are going to talk about another new invention — GPS. Do you know what it is?

2. (播放多媒体，让学生了解GPS的意义，展示GPS的背景知识，以及蓝牙短距离无线通讯功能，导入新课。)

T: Look at the screen. GPS is short for the Global Positioning System.

(板书)

 GPS  the Global Positioning System

GPS is like man-made “stars”, we can use it at any time, in any place and in any weather

to find out our position. It can also be used to study the shape of the earth.

(板书)

 the shape of the earth   

GPS is an invention that helps us explore our planet.

(板书)

 explore — explorer     

But the early explorers used the stars 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.

(板书并解释)

 as long as 

3. (教师引导学生进入2的学习，了解Bluetooth。完成2。)

T: With the development of our technology. There is another new invention called Bluetooth appearing. It is a short distance wireless communication technology. It allows wireless connection between Bluetooth devices.

(教师释义并领读connection。)

T: That’s very magical. Do you think so?

Ss: Yes.

T: Do you know any more Bluetooth devices? Who knows?

S₁: …

Step 2  Presentation 第二步  呈现(时间:10分钟)

1. (让学生打开课本，播放1a录音。让学生感受纯正的语音语调。)

2. (让学生读1a，在文中画出关键词，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 read after it. And underline the key words.

(板书)

question, explorers, landmarks, find out, direction, as long as, problem, like, use, shape

3. (让学生阅读1a，然后讨论下列问题，四人一组。完成1b。)

Questions:

1. What would you do if you lost your way in a forest?

2. How did the early explorers know where they were?

3. What is GPS? Is it useful to us?

4. What do you think GPS will be used for in the future?

(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。)

Answers:

1. I would watch the stars or use GPS.

2. They used the stars to know where they were.

3. GPS is a Global Positioning System. It’s useful to us.

4. It can be used to study the shape of the earth.

Step 3  Consolidation 第三步  巩固(时间:8分钟)

(根据板书的关键词来复述1a，分男、女两组竞赛方式，激发学生的兴趣，熟悉所学的

知识。)

T:    Boys and girls, let’s begin our competition.“question”

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:    “problem”

Girls:      But it didn’t work so well during the rest of the time. This was a problem.

T:   “like”

Boys: GPS is like man-made“stars”.

T:   “use”

Girls: We can use it at any time, in any place and in any weather to find out our position.

T:   “shape”

Boys: GPS can also be used to study the shape of the earth.

T:   OK, you did very well. Boys and girls are both excellent.

Step 4  Practice 第四步  练习(时间:10分钟)

1. (学生整理本话题的语言点、重点句型并放入到自己的“百宝箱”里。培养学生自主学习，动脑归纳的能力。)

(语言点及重点句型)

1. be made of / from / in / by 2. be used for doing something 3. come true 4. It is said that … 5. DNA is the same in every part of your body. 6. be similar to 7. No one knows for certain. 8. They will no longer want to be our servants, but our masters. 9. as long as 10. In 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3a录音，并跟读。复习本话题语法。)

3. (让学生听3b录音，并跟读，然后听写3b。)

Step 5  Project 第五步  综合探究活动(时间:4分钟)

1. (设制一个机器人。并让学生写一篇有关自己设制的机器人的文章。学生可参照以下问题。完成4。)

1. What does it look like?

2. What’s its name?

3. What can it do for us?

4. Can it think for itself?

5. What are its advantages and disadvantages?

2. Homework:

Think it over and design your own invention. Make a card like the card below.

Name:                              Inventor:                            Time:                               Use:

板书设计：

When was it developed? Section D GPS the Global Positioning System This method worked well at night as long as the weather was good. It can be used to study the shape of the earth.