Computer

　　unit 3 computers

　　warming up, pre-reading and readingteaching aims1.knowledge aims(1)get the students to learn the useful and expressions in this part.(2)let students to learn about history and basic knowledge of computers.1. ability aimsdevelop students' reading abilities and let them learn different reading skills.3.emotion aim:arouse students' great interest in learning computers and let them learn to use the computers in their daily lives.teaching difficult and important points1.let the students learn more about history and basic knowledge of computers.2.get the students to learn different reading skills.teaching methods1. task-based teaching and learning2.cooperative learning3.discussion teaching procedures and ways step1.warming up task1: how much do you know about computers? (make a survey)       1. what does it mean?information technology2. how to speak 科学技术 in english?science and technology3. what does pc mean?personal computer 4. how to speak 人工智能 in english?artificial intelligence  5. what does pda mean? personal digital assistant 6.how to speak 笔记本电脑 in english?notebook computer/ laptop 7. what does w.w.w mean?world wide web8. what can computers be used to do in our daily life?……task2: what is it?   give some sentences to describe different kinds of calculating objects and some pictures to help the students to guess what it is? ① an old calculating machine used in china until now.an abacus② it is a new calculating machine which can solve a large number of mathematical problems.a calculator③ it is built to solve some mathematical problems. but it is too big. a huge computer④ it is a computer which can solve all kinds of problems and is used widely now .a  pc / desktop ⑤ it is a kind of computer which can be taken conveniently(方便).a laptop / notebook computerstep2.pre-reading can you put these inventions in an order according to the time when they appeared?(     )  analytical machine（分析机）(     ) laptop(     ) calculating machine （计算机器）(     ) robot/android(     ) pc(     ) universal machine（通用机器）step3. reading (1)skimmingtask1. find out the topic sentences of each paragraph (p19.ex2)task2 .summarize the general idea of this passage.(2)scanningtask1. true or falsein 1642 i began as a calculating machine and could solve any mathematical problem. (f: solve any calculating problem)my real father was charles babbage, who wrote a book and build me in 1936.(f: alan turning)after i got my new transistors in the 1960s, i became smaller but cleverer and quicker.(t)i was brought into people's homes in the 1970s.(t)since my birth i have been built to take the place of human race.(f: build to serve human race)(3)careful- readingtask 1: look at the timeline below. fill in the blanks with information from the reading text.

　　time

　　the development of the computers

　　1642

　　1822the analytical machine was made by charles babbage.

　　1940s

　　the first family of computers was connected to each other.

　　1970s

　　now1642: the computer began as a calculating machine1822: the analytical machine was made by charles babbage.1936: the computer grew rapidly both in size and in brainpower.1940s: the computers had grown as large as a room.1960s: the first family of computers was connected to each other. 1970s: computers were used in offices and homesnow: computers connect people all over the world together.step4. conclusion of the text  how did computers develop?   a calculating machine   →_____________→  _________________→_________________→________________→_____________→  ________________→________________→_ many new applications