2册U3安学.doc

录像课Book 2Unit 3Computers学案 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 Computers Period1 Warming up and Reading StepⅠ: Lead-in Guessing Game ①: Who am I? Let students make up as many sentences as possible Guessing game②: 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 don’t 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 I’m small enough for you to take me with you. Do you know who I am? ( ) StepⅡ: 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 paragraph Para _: 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. What’s the main idea of this passage? ( ) A. The development of computers. B. The devel