高中英语必修二unit3+Computers+教案3

1、英语学习讲义只要坚持梦想终会实现 Unit 3 ComputersPeriod One Warming up and ReadingBy Zhang SuochengTeaching contents:Warming up; Pre-reading; Reading; Comprehending (19)Teaching important points:Students are able to learn more about the history and basic knowledge of computers.Students are able to learn different r

2、eading skills.Teaching difficult points:Help students to improve their reading abilities.Students are able to express their opinions.Help the students learn to use personification, chronology and topic sentences when writingTeaching methods:Task-based teaching and learningCooperative learningDiscuss

3、ionTeaching aidsThe multimediaTeaching aimsKnowledge aims:Students are able to learn the useful new words and expressions in this passageStudents are able to know basic knowledge about computers.Ability aims:Help students to improve their reading abilities.Train the students ability to collect usefu

4、l information from the Internet by themselves.Emotional aim:Guide the students to work hard to create more wonderfuland convenient inventions for human beings.Teaching procedureStep One Warming upTalk about the importance of computer and the Internet.Cooperative learning: Showsomepictures of the dev

5、elopment of computers.Questions: 1. What can you see in the pictures?(abacus, calculator, huge computer, PC, laptop, PDA, robot)2. What do you think will be the next development?Discussion (pair work): What do they have in common,in your opinion?Some useful expressions:I think that In myopinion I be

6、lieve that What s your reason? Why do you think so?Step Two Pre-readingAsk the students to predict what the text is going to be about from the title and the pictures.Step Three While-readingTask 1: Skimming the passage for the general ideaQ 1: What is the main idea of the passage?This passage is mai

7、nly about the history of the development of computers.Q 2. Who am I?I am a computer.Task 2: Scanning for detailed information.Read the passage and finish the timeline below. (Ex. 1on Page19)Task 3: Listen and read aloudTask 4: Read the passage again. In pairs find out the topic sentence of each para

8、graph and the supporting details. (Ex.2 on Page19)Question & Summary: How to find out the main idea of a paragraph quicklyA topic sentence sets out / explains the main idea of a paragraph.A topic sentence is usually the first or the last sentence of a paragraph.Step Four Post-readingTask 5: Guessing

9、 gamesFind the word or expression for each of the following meanings from the text according to the context.(Ex. 1 on Page 20)Task 6: True or False?The passage mainly tells us the history of the computer.The computer was considered simple-minded before it got artificial intelligence.Charles Babbage

10、invented the first computer.Since its birth the computer has been built to take the place of the human race.Step Five Brief summaryWhat have we learnt in this class?1) some words about computerscalculating machine, analytical machine, universal machine, PC, laptop, tubes, transistors, chips, network

11、, World Wide Web, communications, finance, trade, robots, mobile phones, medical operations, space rockets 2) the short history of the development of computersgreat changes in sizefrom togreat changes in memoryfrom togreat changes in functionfrom togreat changes in applicationfrom tosome scientists

12、relating to computersbuilt the analytical machine.made the first computer.some good methods of writingin the first personpersonification“Who am I? ”in an order of timechronologytopic sentencesStep Six Discussion in groups of fourWork in groups of four and discuss the advantages and disadvantages ofc

13、omputers.Step Seven HomeworkRead the passage again. Underline the words, phrases or sentences that you don t understand, and try to solve the problems using context clues and the dictionary.Design on the blackboardUnit 3 ComputersPeriod One Warming up and ReadingMain idea of the passage:This passage

14、 is about the history of the development of computers.Topic sentences of each paragraph:Paragraph 1: Over time I have been changed quite a lot.Paragraph 2: These changes only became possible as my memory improved.Paragraph 3: Since the 1970s many new applications have been found for me.Summary: What have we learnt in this class?some wo