高一必修2Unit3课件--.ppt

warming-up and reading,The technology develops so quickly that many new things appear in human beings life.,Lets guess what they are:,guessing game,I am very old now. I was born in China. Many people used me for calculating(计算) in the past, but now I am a bit lonely because they dont like me now. Do you know who I am?,abacus,Guess :,I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical(数学的) problems. Do you know who I am?,calculator,Solve a riddle : one thing,It has a big face with many keys,It has two big ears which can play music,You can watch TV or see a movie using it,It can be seen in the office, classroom and at home.,It can download information,guess,Do you know who I am ?,A huge computer,“银河”巨型计算机,A PC= personal computer,We can see many brands of computers,Lenovo 联想,Haier 海尔,神州,Tinghuatongfang清华同方,惠普,Dell,TCL,Acer宏基,thinking,1. What do they have in common?,（Using some of the following expressions in your discussion.）,I think that In my opinion I believe that What s your reason? Why do you think so?,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. ,What makes up the computer? And can you name each part ?,GPU/显卡,Hard disk,Main board/主板,CPU/处理器 (Central processing unit),NIC/内存,mouse,Key-board,Sound box,screen,headphone,. Read through the words in the box. Use some of them to name each part of a computer in the box.,Monitor mouse keyboard hard disc floppy disc CD-ROM printer scanner modem Chips CPU,floppy disc,chips,monitor,modem,CD-ROM,scanner,keyboard,printer,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.,Reading,?,Who Am I,Unit 3 Computer,Reading,Scan the text and then answer the following questions: 1.Who is the speaker? 2.What the text might be about?,Scanning,1.Who is the speaker ?,It is a computer.,This reading passage is mainly about the and the of the computer.,history,development,Find out three sentences to support who the speaker is in the story.,1.Then in 1822 I was built . (Itself was the first design of a computer),2.My real father was Alan Turing. (He designed the first real computer.),3.However, people thought I was simple-minded until., (It has artificial intelligence.),1.Where were you in 1642?,3 What were you called in 1936?,4 What did you get in the 1960s?,What happened to you in the 1970s?,2 What happened to you in 1822?,Timeline,1642: _ _ _: The Analytical Machine was Made by Charles Babbage. 1936:_ _ _ 1960s:_ _ _,The computer began as a calculating machine in France.,1822,Alan Turing wrote a book to describe how computers could be made to work.,Computers have new transistors and became smaller.,_: The first family of computers was connected to each other. 1970s: _ _ Now:_ _,1960s,Computers were brought into peoples homes.,Computers connect people all over the world together.,True or false 1. Charles Babbage was the computers real father. 2. The speaker was built as an Analytical Machine in 1822. 3. The speaker was called a calculating machine in 1936. 4. The speaker was given a family connected by a network in the late 1960s.,F, Alan Turing. ,T, a universal machine , in the early 1960s ,F,F,Q1: How did the computer work as an Analytical Machine? The computer followed instructions from cards with holes. Q2: In which way did computers talk to humans? Using BASIC. Q3: What does “others” (2.6) refer to? Other computers.,3. Questions,Q4: Why did people think the computer was simple-minded? Because the computer was made as a calculating machine and was used to solve mathematical problems.,Q5: In how many ways do we say the computer changed? What are they? Size: Intelligence: Speed: Function: People opinion:,smaller,quicker,cleverer,calculating-dealing with , communicating with,simple-minded-clever & useful,a personal computer,a calculating machine,an analytical machine,a notebook computer,a huge computer,Changes in size,1._ (earlier) 2._ ( in the past) 3._ (modern),not very big,huge,smaller and thinner,Changes of the machine,Calculating machine,Analytical machine,Universal machine,artificial intelligence,PC (desktop/ notebook),Internet,?,Time,Development in functions,calculate,calculating machine -,Analytical Machine -,follow instructions,universal machine-,solve mathematical problems; artificial intelligence,Computer connected by a network,share information with others; talk to each other; deal with information; communicate with each other,Discussion: what other functions will computers have in the future? Or what will computers be like?,Use the following expressions:,I think that In my opinion I believe that It would be nice if richer and richer; stronger and stronger; easier and easier,Then what should we do if we want to develop more functions of the computer?,Study hard. Learn as much knowledge as we can. Prepare to become great scientists!,Summary,The history of computers,Name : computer Born : (time)_ (place)_ My father: _ My size: 1._(earlier) 2._( in the past) 3._(modern) My history: 1. 1642 _machine 2. 1822_machine 3. 1936 _machine 4. 1960s computers with _ 5. 1970s _ and _ computers. My usage: 1. _ 2._ 3._,Who am I,1642,France,Alan Turing,not very big,huge,smaller and thinner,Analytical,calculating,universal,transistors,PC,notebook,share information.,communicate with others.,serve the human race.,Now people can use computers to deal with information and communicate with each other around the world by _ . But the development of computers has a long history. In 1642, the first computer only worked as a _ . In 1822, an Analytical Machine was invented. In 1936 ,a machine was built. In _ ,after getting new computers became _ in size, got cleverer and cleverer in intelligence, and became_ in speed. Then they could be connected with other computers by a network, and _ could talk to them using BASIC. In the 1970s ,people began to bring them into their homes.,Summary,the Internet,calculating machine,the 1960s,smaller and smaller,quicker and quicker,humans,universal,transistors,People say computers have more advantages than disadvantages. Do you think so?,advantages,disadvantages,A,B,Such as :,Send an e-mail,It is bad for your eyes,How do you use the computers in daily life？,(1). play computer games (2). QQ（chat on line） (3). send emails to friends (4). download music and films (5). search for information (6). do business or work (7). use computer for school work (8). look at photographs,Think: Which is the most important?,Dont spend too much time playing games!,Download(下载) information,See a movie or watch TV,Play computer games,Buy goods you want,Do some chatting,advantages,- - - - - - -,improve peoples ability of thinking,Too expen