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【超全精美教案】最新人教版高一英语必修2教学案Unit 3 Computer


Unit 3 Computer Part One: Teaching Design (第一部分:教学设计) Period 1: A sample lesson plan for reading (WHO AM I?) Aims To talk about computer To read about computer Procedures I. Warming up Warm

ing up by talking about computer Look at the pictures on page 17. What are they? What do they have in common? Yes, they are computers. Then what is a computer? A computer is a machine which stores knowledge in its memory and does calculations on that knowledge. This knowledge is stored in symbols; it is called data. A computer usually has a monitor to show results. However, some computers can speak; these computers can be used for voice mail. 计算机室 A computer frequently requires a boot device. The boot device contains the computer?s operating system and data. Computer programs can be installed onto a computer. Some people think that computers are less useful if they do not have access to the Internet. They think this because the Internet allows the computers to send and receive data and email across the world. -1- 曙光 3000 巨型计算机 A computer is now almost always an electronic device. It usually contains materials which are toxic; these materials will become toxic waste when disposed of. When a new computer is purchased in some places, laws require that the cost of its waste management must also be paid for. This is called product stewardship. In some countries old computers are recycled (melted down) to get gold and other metals. This is dangerous, because this procedure releases the toxi

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