必修2Unit3computer--教学设计方案.doc

人教版新课标高一必修2 Unit 3 computer-教学设计方案教师行为学生学习活动设计意图（一）创设问题情境，激趣导入1. 教师用 PowerPoint 分别展示图片以及有关的介绍，分辨是什么职业。2. 发言自己长大后要从事什么职业。1. 学生观察图片，说出自己的想法。2. 根据教师指导，练口语。3. 熟悉职业名词的表达。利用多媒体课件创设情境激发学生学习兴趣，给学生心理上的支持，创设良好的学习氛围。（二）热身1. 教师设定几个问题Good morning,class.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.1. 看图片识辨计算机，发现不同。2. 提高学生应答意识。1. 熟练掌握与此部分话题相关的重点词汇、短语及句子。2. 激发学生的想象力。（三）课前预习Questioning and answering What do you know about computer?Electronic machine capable of performing calculations and other manipulations of various types of data, under the control of a stored set of instructions.A multi-function electronic device 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 internally 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 electronic data processing. a machine for performing calculations automaticallycalculator: an expert at calculation (or at operating calculating machines)A computer is a device or machine for making calculations or controlling operations that are expressible in numerical or logical terms.1. 测试学生对计算机历史的了解。2. 预测计算机的应用领域。3. 对语篇理解进行预测。4. 多思考增加学习兴趣。1. 调动了学生的学习积极性。2. 培养学生组织语言、运用语言的能力。3. 帮助学生有效的进行知识上的重建。（四）阅读为全体学生进行有效阅读策略的点拨与指导，如略读、寻读、预测和分析性阅读。1. Skimming for the general idea of each paragraph2. Ask students to read the passage fast to the key words and general idea of each paragraph and fill in the chart.3. Scanning for detailed information.4. Get Ss to tell the characteristics of the passage, such as the type of writing, and the tense.careful reading 5. Read the text again to complete the table, which lists all the numbers in the text.1. 略读了解计算机的演变经历的几个过程。2. 按4 人一个小组，把学生分成A、B、C、D.若干个小组进行相关问题的讨论。讨论后每组推出一个同学回答，答对给1 分，答错扣1 分，在黑板左上角公布各小组成绩。3. 到下课时各小组的竞赛结果一目了然，给予获胜的小组以精神或物质奖励，以激发学生的学习主动性和积极性。培养学生的质疑意识，提高学生分析问题和解决问题的能力。 （五） 播放本文录音并让学生跟读让学生翻到text，播放课文录音边听边读通过听录音让学生在视觉和听觉上对课文有进一步的感性认识，不但巩固了所学知识，也训练了学生的听力（六）拓展（访问）Suppose one is a journalist and the other is a computer.访问计算机的发展史，以及计算机在生活中方方面面