Unit 3

Warming up

Unit 3

Warming up

Heavy!Difficult! Hard!Tired!

1. Easy !

2. Fast !3. Free !

abacus

算盘

An abacus is an old calculating machine used in China until now.

a huge computer

A huge computer is built to solve some mathematical problems. But it is too big.

calculator

计算器

A calculator is a new calculating machine which can solve a large number of mathematical problems.

PC personal computer

A PC is a personal computer which can solve all kinds of problems and is used widely now.

notebook computer

A notebook computer is a kind of useful computer which can be taken conveniently like a notebook.

What do they have in common?

I think that… In my opinion… I believe that…What’ s your

reason?Why do you

think so?

1.They can be used f

or calculating.

2.They can deal with

maths problems.

3.They are our friend

s.

4.They are useful an

d helpful.

Discussion

What can we do on a computer and through the Internet?

Computer and Internet

type my homework

draw pictures

play games

communicate with my friends gather

information for my lessons

listen to music

watch movies

……

How useful computers are!

school workgamesemailsmusic filmschatinformationphotosshopping

Internet

CPU hard disc

CD / DVD-ROMCRT monitor LCD monitorLCD monitor

chips/motherboard

keyboard mouse modem

scanner printer speaker

floppy disc USB flash disc

CD/DVD/VCD MP3 player

12

4

3

5

6

1. monitor 2. screen 3. CD-ROM4. mouse 5. keyboard 6. hard

disk

Label each part ( WB P56 )

1 A monitor is

2 The screen is

3 A keyboard is

4 A mouse is

5 A CD-ROM is

6 A hard disk is

(a) the part of a computer that stores information.

(b) the part of the computer that you type on.

(c) the part of the computer that looks like a television

(d) something you use to click on things (files, etc.).

(e) the part of the monitor that you look at.

(f) The main device that a computer uses to store information.

Match the words with their meanings.

Underline the correct option to form compound words.

Example: search a) engine b) motor c) disk

1 key a) door b) board c) pocket

2 web a) design b) light c) site

3 on a) time b) line c) sign

4 down a) road b) food c) load

5 soft a) ware b) bear c) toy

6 up a) day b) date c) late

7 hard a) data b) disk c) system

searchengine

Talk freely

Different attitudes towards computers.

parents school students

Summary

Abacus

Huge computer

PC

Calculator

Notebook computer

Internet

Robot

?

Write out all the words you know about computers.

computer

monitor

click

software

searchupdatedownloa

d

Internet

keyboard

1. Talk about computers after

class.

2. Preview the Reading at

Page18.

Homework