高一必修二第三单元Computers第一课时阅读课
教学步骤
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教师活动
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学生活动
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Step1
Lead in
导入
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T shows the puzzles on
the screen and let Ss
try to get the answers
as quickly as they can.
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Ss think and try to
Guess the puzzles
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【设计说明】以游戏猜谜导入,既快速地调动了学生的积极性,活跃了课堂气氛又自然而巧妙地引入了本节课的主题“Do you know the history of computers ?
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Step2
Fast reading
快速阅读
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Let Ss read the passage quickly and try to get the main idea :
1.Who is the speaker?
2. What is the main idea of the whole passage?
3. In what order is this passage arranged?
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Ss look through the
Passage and try to
Catch the main idea and answer the questions.
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【设计说明】简要的问题使学生对文章内容有大概的了解,为下一步的careful reading 奠定基础。
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Step3
Careful reading
细读
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Task 1 Let Ss finish the timetale:
1642: The computer began as_____________: the Analytical Machine was Made by Charles Babbage.
1936: The computer grew rapidlybothin__________ and in ___________
1940s: The computer had grown________________
1970s: Computers were usedin_______________: The first family of computers was connected to each other.
Now: Computers connect people _________
together.
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Ss read the passage
Carefully, underlining the timeto finish the timetable.
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【设计说明】引导学生根据文章内容列出计算机发展演变的几个阶段,此练习对学生来说不是很难,可以直接在课文中找到答案。
由易到难,可提高学生对阅读的兴趣,增强他们完成进一步阅读任务的信心。
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Task 2 Have Ss to find Out the topic sentence Of each paragraph and have a better understanding of the details
Para1__________________________
In how many ways do we say the computer changed? What are they?
Size:_______________________
Intelligence__________________
Speed:______________________
Function:___________________
People’opinion:________________
Para2_________________________
True or false
1.First my memory stored in tubes,then on very small chips and later on transistors.
2. As time went by, I was made bigger.
3. In the 1960s the first family of computers was connected to each other.
4.Computers could share information and express their feelings.
Para3__________________________
What applications are mentioned in Para 3?
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Ss read the
Paragraphs
And try to get
The main idea of
Each paragraph;
Then read again
To get the useful
Information to
Finish the
Comprehending
Tasks.
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【设计说明】考察学生的篇章分析能力和总结概括能力,同时渗透了阅读技巧的训练;分段分析获取有效信息,达到对文章深层次理解的目的。
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Task 3 Retell the passage and enjoy the vedio
I began as a _______ machine in 1642 in France. In 1822 I was built as an _______ machine. Then in 1936 Alan Turing wrote a book and built a ______ machine. As the years have___ ___ , I have been made ______ . There were times when my size totally ______ . And my memory became so _____ l that I couldn’t believe it. In the 1960s they gave me a family_________ by a network. I was able to _________________with others through the World Wide Web. Since the 1970s many new applications ______________ for me.
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【设计说明】复述课文以完成对文章整体的理解,并考察学生对重点词汇的掌握程度。
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Step4 Post reading
读后
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Task 1 : Questionnaire (问卷调查)
How do you use computers and the Internet?
Let students read the chart and give their opinions
I often use a computer to…, I sometimes use it to…, and I never use it to…
【设计说明】以问卷调查的形式,让学生自由表达日常生活中使用电脑的情况,任务难度不大,学生能轻松愉快的完成。这个小活动为第二步的小组讨论营造了良好的氛围,可以很好地调动每个学生的参与热情,尤其是英语偏弱的学生。
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Task 2 小组讨论 (合作学习)
Divide Ss into some groups and let them have a discussion : Should
High school students surf the
Internet ?
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Ss have a discussion in groups, sharing their ideas with each other
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【设计说明】“中学生是否应该上网?”这一问题一直是学生老师家长较为关注的,存在较多争议的热点话题,以小组讨论的形式让每个学生充分表达他们对这个问题的看法,提高他们的语言表达能力,进一步加深对课文的应用和理解。
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Task 3 随机采访
Ask one or two students to act as
Reporters to interview some Ss and T,sharing their ideas.
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One or two Ss act as
Reporters to interview
Some Ss and T to get
The ideas of the issue
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【设计说明】仿照街头采访的形式,选择一名学生扮演记者,随机采访一些学生和老师,分享他们对这一热点话题的看法和建议。有了第二步的小组讨论,基本每个学生都有能力对此发表看法,且营造出轻松愉悦的采访氛围,应能很好的完成此任务。
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Step5 Homework
家庭作业
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1.Do the writing:Should high school students surf the Internet?
2.Deal with the language points in the text using reference books or dictionaries.
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【设计说明】通过课堂上的讨论与采访,学生对中学生是否应该上网已经有了自己的看法,课后可应用这些写出一篇小文章,提高学生的写作与表达水平。
词汇的预习时为第二课时的知识点讲解做好准备,同时也训练了学生的自我学习能力。
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