Unit 3 Computers warming up and reading

课件29张PPT。computer10 most famous brands of computers in China:Lenovo E2020Lenovo E2000TCL锐利6000紫光金长城沐泽HP惠普实达Talking:Your class is thinking of buying a computer. In groups discuss which one is the best for you. Remember to discuss the advantages and disadvantages of some computers.
Then make your choice and give reasons.Useful expressions:The advantage/disadvantage is… what is your reason? I believe that … I think this one is better because… let’s make our decision. In my opinion…. I’ve decided…. I don’t like this one because….Report：Our group has chosen ________ because______What’s the computer mainly made up of?An abacus is an old calculating machine used in China until now.Other computers:A huge computer is built to solve some mathematical problems, especially in the scientific field. For example , used in sending spaceships. But it is too big.Discussion:I think that…
In my opinion…
I believe that…
What’s your reason?
Why do you think so?I think that they all can calculate something. They can deal with some maths problems.I believe they are our good friends. In our everyday life, we can’t finish our work quickly without them. In my opinion, people improve the abacus, make it more useful and make it a computer. They are being used widely in the world.1642Calculating machine1822Analytical machine1936Universal machine1960sMachine with transistorEarly 1960sThe first family connected by a network1970sPersonal computernowConnect people by the internetWho am I ?I am the analytical machine designed by Charles Babage.1.then in 1822 I was built as an …..2. My real father was Alan Turing, who…3.however, people thought I was simple-minded…Fill in the blanks:In 1642, a calculating machine was born in France. Then in 1822, the ________ machine was made by Charles Babbage. It could follow ________ from cards with holes. In 1936, Alan Turing wrote a book to _______ how computers could be made to work and built a “universal machine” to solve any mathematical problem. Later, people discovered the computer had “_______ intelligence”.analyticalinstructionsdescribeartificialIt got it’s new ________ in the 1960s. The computer’s size was _______ changed at that time. And in the early 1960s, the first family of computers was connected to each other by a _______. Computers were __________ people’s home in the 1970s. Now, computers have been used by billions of people to _________ information and communicate with each other around the world by the internet.transistorstotallynetworkbrought intodeal withDebate for homework:We can live better with the computer.Girls disagree to this opinion.Boys agree to this opinion.