Unit 3 Computers

Riddles(谜语): Computers A handbag? A toy?

Riddles(谜语): I am very old now. I was born in China. Many people used me for calculating in the past, but now I am a bit lonely because they don’t like me now. Do you know who I am? abacus

Riddles(谜语): calculator Do you know who I am? I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical problems. Do you know who I am? calculator

Riddles(谜语): Do you know who I am? Notebook / laptop I can be used for calculating. Besides, I can also be used for watching DVD, sending e-mail and communicating through the Internet. However, I am not a PC, because I’m small enough for you to take me with you. Do you know who I am? Notebook / laptop

the history of the computer A huge computer the history of the computer A PC PDA / Palmtop

in common: for or by all of a group 共同的；共有的；共用的 the land owned in common by the residents 居民共有的土地 in common 常常同have连用，如： have nothing in common 无共同之处 have little in common 几乎无共同之处 have something in common 有一些共同 have a lot in common 有许多共同之处

What do they have in common? A huge computer What do they have in common? A PC Palmtop

(What do they have in common?) Discussion (What do they have in common?) 1.They can be used for calculating. 2.They can deal with maths problems. 3.They are our friends. 4.They are useful and helpful. I think that… In my opinion… I believe that… What’ s your reason? Why do you think so?

Give the English name for the computer components (组件) How much do you know about a computer??? Give the English name for the computer components (组件)

What is it in English?? Main board(主板)

CPU (central processing Unit) What is it in English?? CPU (central processing Unit) 中央处理器

What is it in English?? hard disc 硬盘

What is it in English?? Keyboard (键盘)

What is it in English?? Monitor显示器 Screen 屏幕

What is it in English?? mouse 鼠标

What is it in English?? DVD ROM 数字通用光盘

Reading Who am I ?

Skimming: 1.who is the speaker ? It is a computer. 2.What’s the passage about? It’s about the history of computer.

Scanning: Time 1642 1822 1960s What is the order of the text? 1970s The Analytical Machine was made by Charles Babbage. 1936 1960s The first family of computers was connected by a network. 1970s now The computer began as a calculating machine． 1822 What is the order of the text? Alan Turing wrote a book to describe how computers could be made to work and built a “universal machine”． Computers had new transistors and became Small and thin. 1960s Computers were brought into people's homes． Computers connect people all over the world together.

Charles Babbage Alan Turing

Q: how did computer change in its size, intelligence, speed, function? And how about people’s opinion? Size: Intelligence: Speed: Function: People’s opinion: smaller cleverer quicker dealing with …, communicating with… calculating clever & useful simple-minded

What are today's smaller computers like? convenient laptop smaller desktop What are today's smaller computers like? palmtop

Discussion What can the future computer be like? What can we do by computer in the future? Nose-top keyboard-vest virtual keyboards 虚拟键盘

Group work You are given a chance to design a computer for yourself. Draw a picture about it and describe(描述) what functions it has. You will be asked to introduce(介绍) your computer. (appearance &functions) Group work

Homework: 1.熟读课文,按时间顺序复述课文,记住文中的黑体字. 2.做书上P19EX1和P20EX2 3.《金牌学子》