2册U3安学案.doc

录像课Book 2Unit 3Computers学案 授课人：安艳教材版本：人教版新课标学科：英语年级: 高一册别：必修二Unit 3 ComputersPeriod1 Warming up and ReadingStep: Lead-inGuessing Game : Who am I?Let students make up as many sentences as possibleGuessing game:1. 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 dont like me now. Do you know who I am? ( )2. I am very big. Scientists use me to solve some mathematical problems. Do you know who I am? ( )3. 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? ( )4. I am a computer which can solve all kinds of problems and is used widely now . Do you know who I am? ( )5. 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 Im small enough for you to take me with you. Do you know who I am? ( )Step: Fast-reading 1.Terms in the text:calculating machine 计算器Analytical machine 分析机card with holes 穿孔卡technological revolution 技术革命universal machine 通用机器artificial intelligence 人工智能Group 1: Listen to the story to find out who the speaker is. ( )Look at the following three sentences to support your idea. I was built as an Analytical Machine by Charles Babbage.My real father was Alan Turing .I was able to share my knowledge with others through the World Wide Web. Group 2:Match the main sentence of each paragraphPara _: Over time I have been changed quite a lot.Para _: These changes only became possible as my memory improved.Para _: Since the 1970s many new applications have been found for me.Group 3. Whats the main idea of this passage? ( ) A. The development of computers. B. The development and use of computers. C. A machine which is simple-minded.D. Computers may replace human beings. Step: Careful readingsimplify vt. 简化sum n. 总数；算术题；金额operator n.（电脑）操作员;接线员solve vt. 解决；解答reality n. 真实；事实；现实personal adj. 私/个人的; 亲自的1)Read paragraph 1, then do the following questions:Group 1.Look at these inventions. Can you put them in an order according to the time when they appeared? ( 2 ) analytical machine ( ) laptop ( 1 ) calculating machine ( ) robot ( ) PC ( 3 ) universal machine Group 2.Fill in the blanksParagraph1:Over time I have been changed quite a lot.v 1642:The computer began as _ in France. Line 2v 1822:The analytical machine was made by Charles Babbage.v _ :The computer grew rapidly both in size and in brainpower.Line 14Group 3.In which order is the text organized?( In order of_)Read paragraph 2, then do the following questions: tubenetworkWebthe World Wide Web = WWW.n. 管；管子；电子管n. 网络；网状物n. 网万维网Paragraph 2: These changes only became possible as my memory improved.Fill in the blanksGroup 1:First it was stored in _, then on_and later on very small_. Lines 18-19 Group 2:1940s: The computer had grown _ Line 14v 1960s:The first family of computers was connected to each other.Group 3: _:Computers were used in offices and homes. Line 17Read paragraph 3, then do the following questions:applicationfinance mobilerocketexploren. 应用； 用途； 申请n. 金融；财经n. 可移动的；机动的n. 火箭vt. & vi. 探索；探测；探究Paragraph 3:Since the 1970s many new applications have been found for me.v The computer has become very important in communication _and trade. Line 27v The computer has also been put into robots and used to make _. Line 29v The computer has even been put into space _and sent to explore the Moon and Mars. Line 31Step: DiscussionDesign your own computer (style ;size; color ) Title: My Magic Computerv Its design is.v It looks like.v Its color isStep: Homework: a compositionTitle: Should high school students surf th