Do you know who I am?
abacus
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?
wrote__ a book ___ ____ to describe ________ how 1936 Alan Turing ____
1940s Computers had _____ grown ___ as large ______ as__ a room.
1960s
1970s
A family of computers was connected by a network.
early days(the first paragraph)
Name a caculating machine a Function(功能) simplify difficult sums strong _____
poor
analytical machine ________ think logically a2.universal ______ machine solve difficult3. _________ mathematical
What are the advantages and disadvantages of the computers? In my opinion,I can use the computer to….
We can use the computer to…….
Watch movies
listen to music search for …
8. use the Internet to search for information 9. surf the web for fun 10. read news both at home and abroad, read books and magazines
Disadvantages 1.Some students may get too addicted (沉 溺于)to it . 2. Some students waste too much time in playing computer games. 3. Some students spend too much time in chatting with others and may be cheated (欺骗)by someone on line. 4. As a result, they have little time to study 5. It is bad for our eyes and health to spend long time in front of computers.
communicate with…
do shopping
Advantages
We can use the compuers to… 1. use a computer for school work 2. play games on the computer 3. send emails to friends 4. download music and films 5. go shopping on line 6. use QQ to make friends 7. communicate with others
keyboard mouse
main unit
What’s next?
work for us in Mars(火星)
carry things
work in wars (战斗)
仿真机器人
entertainment
娱乐 What do you think will be the next development?
Read the passage and choose the best answers.
1.What can we learn from the text? A Computer has a short history. B No one knows computer when the first computer was made. C Computers are not widely used even today. D D Computers are widely used. 2. Who was the computer’s real father? A A Alan Turning B Not mentioned in the text. C Bill Gates D Charles Babbage 3 .The computer almost changed completely _______. A in 1642 B in 1882 C C in the 1960s D in the 1970spassage fluently. 2. Do Ex on period 2. 3. Retell the passage .
http://www.99dyw.co/ 九九电影网 / 九九电影网 九九电影网 www.youhuijuan.co 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014 天堂网2014
_____
narrow wide _____
small
____; trade robots; mobile phones; medical operations space have been found 8.______________;
in many fields(领 域). rockets
Discussion
Reading
Guess!
A handbag?
A toy?
Guess more:
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.
Reading
I.Scanning(略读)
Fast-reading
a computer 1.In the passage, “I” refers to _________. 2.the topic sentence of each paragraph. Paragraph I: Over time I have been changed quite a lot. paragraphII: These changes only became possible as my memory improved. paragraphIII: Since the 1970s many new applications have been found for me. So the whole passage is mainly about: the development of computers. _________________________________.
Do you know who I am? notebook computer/ laptop
What do you know about computers?
shapes
sizes
colors
kinds
parts
Do you know them?
CD-ROMs
drives
monitor
speakers
1642
began as a calculating The computer _____ ___ ___ _______ machine．
1822
analytical machine was made by The _________ Charles Babbage. computers could be made to work．
calculator
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.
network times (the
tubes
2nd
problems and 3rd para)
large
my memory
since the 1970s applications 5___________
transistors 4._________ Small chips communication finance;7. 6.___________;
First as _ a ____and PC then as ___ a laptop __ ___ computers were used in offices and homes. now Computers connect people all over the world together.