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

1、超全精美教案最新人教版高一英语必修2教学案Unit 3 ComputerUnit 3 ComputerPart One: Teaching Design (第一部分：教学设计)Period 1: A sample lesson plan for reading(WHO AM I?)AimsTo talk about computerTo read about computer ProceduresI. Warming up Warming up by talking about computerLook at the pictures on page 17. What are they? Wh

2、at 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 co

3、mputers 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 computers 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 a

4、ccess to the Internet. They think this because the Internet allows the computers to send and receive data and email across the world.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 o

5、f. 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

6、 the toxic waste into the water and soil.Computers become obsolete quickly. Very often they are given away and new ones replace them within two or three years. This makes the problem worse. Computer recycling is thus common. Many projects try to send working computers to developing nations so they c

7、an be re-used and will not become waste as quickly.Computer jargon 计算机行话Computer jargon means words to do with computers and surrounding topics. Knowing what these words mean can help you know more about computers. Some people use these words to impress other people (Also known as buzzwords).Example

8、s of jargon:Bit - The smallest data unit, can either be a “0.” or a “1.”. Byte - unit of data. See also Kilobyte, Megabyte, Gigabyte and Nibble CPU Central Processing Unit, Another name for processor Data - Information stored on a computer Disk - A place to store data. Email - Electronic mail. GHz -

9、 Gigahertz. Used often incorrectly to describe the speed of a processor. But with some 2.4 GHz processors faster than 3.6 GHz ones, it is clear that it is just a salesman trick. Load - Get data from a disk Nibble - Half a Byte Save - Put data on a disk RAM random-access memory(随机存取存储器), the more the

10、 better. USB - Universal Serial Bus（通用串行总线，一种简化了插接多种附件的薄型插座） WWW - World Wide Web, part of the InternetII. Pre-reading1. Questioning and answeringWhat do you know about computer?Electronic machine capable of performing calculations and other manipulations of various types of data, under the control

11、of a stored set of instructions. The machine itself is the hardware; the instructions are the program or software. Depending upon size, computers are called mainframes, minicomputers, and microcomputers. Microcomputers include desk-top and portable personal computers.A multi-function electronic devi

12、ce that can execute instructions to perform a task.A device that accepts information, processes it, and supplies an output. A computer usually contains memory, a control unit, arithmetic and logical units, and a means for input and output.a programmable hardware component that is controlled by inter

13、nally stored programs and that can perform substantial computations (including arithmetic and logic operations) without human intervention. A computer typically consists of one or more processing units, memory units, and associated peripheral input and output devices.Related to automation and electr

14、onic data processing. The Library of Congress commonly classes most computer-related books in HF5548, QA75-76, Z52, T385, and some TK ranges.a machine for performing calculations automatically calculator: an expert at calculation (or at operating calculating machines) A computer is a device or machi

15、ne for making calculations or controlling operations that are expressible in numerical or logical terms. Computers are constructed from components that perform simple well-defined functions. The complex interactions of these components endow computers with the ability to process information. If corr

16、ectly configured (usually by, programming) a computer can be made to represent some aspect of a problem or part of a system. If a computer configured in this way is give2. Discussing and sharingHow have computers changed our lives?Someday soon, if you havent already, youre likely to plug into the computer network nation growing in our midst. Computer terminals, or small comp