Book8 Unit2Cloning教学设计
教学目标：
知识目标：To learn some important words, phras and ntences to understand the text better.
a重点单词和短语(important words and phras)：
Differ exact commercial undertake procedure object moral forbid pay off cast down in favor of
B 重点句子(important ntences)：
The fact
Then came the disturbing news that...
能力目标（ability goals)：
a)To strengthen the reading skills like predicting, skimming, scanning.
b)To enable students to describe cloning
情感目标：to develop the interest in science
教学重点（Teaching important points ）：
How to describe cloning.
教学难点（Teaching difficult point ):
Help the students analyze the writing techniques of the article
教学方法(Teaching methods :Skimming and scanning,task-bad method and debate method. Teaching aids
教具（Teaching aids）: A computer and some slides.
Teaching procedures & ways教学过程与方式
Step I Lead-in ： Show some pictures of Dolly the sheep(多莉羊)、 plants and flower、 Twins（双胞胎婴儿），on the screen. Get students to look at the pictures and discuss: which ones are natural clones and which ones are man – made? Then explain how they differ.
S: I think the twins are natural clones and the Dolly sheep is man-made.
T: You are right! Can you explain how they differ?
S: The twins were born at the same time, but the Dolly sheep is man-made
T: Good job.they are identical in x and appearance, who are produce from the same original egg. The plant produces its own runners
【设计说明】克隆技术是一门前沿科技，学生对此兴趣浓厚，利用幻灯片展示当今克隆技术产生出来的动植物照片，学生的兴趣被瞬间激发，注意力高度集中，学习的热情高涨。这就为进一步的学习做足了铺垫
StepⅡReading
Introduce “The skimming Skills” to the students:read the first ntence of each paragraph;read the introduction of each paragraph ;read the summary of last paragraph
Get the students to comprehend the passage quickly and accurately and meanwhile help the students form a good habit of reading
1 Skimming(fast reading):
math the main idea with each part:
Part 1(para1) A Two major us and the procedure of cloning
Part 2(para2) B The definition (定义）of cloning
Part 3 (para3) C The problem and the effect of Dolly the
sheep
Part 4(para5) D People's attitude to cloning
Suggest answers:BACD
The main idea of the text is( )
A Animal cloning is very valuable and can benefit the word
B Animal cloning could be misud by bad people so it must be forbidden
C Animal cloning is well developed becau Dolly the sheep was born
D Animal cloning raid arguments and scientists are not sure about its future
what is the writing style( )
A Expositive(说明文)B Descriptive(记叙文)
C Argumentative(议论文)
Suggest answers:D A
【设计说明】让学生快速浏览课文，把握文章的框架结构。把培养学生的阅读能力落实贯彻到每一节的课堂教学当中
2 careful reading:
Show the questions on the screen. Ask students to read the text again and find the answers to each questions.
Part1(Para1) The definition (定义）of cloning
Q: What is cloning?
part2(para2): Two major us and the procedure of cloning
Q: What are the major us of cloning?
Q: When was the Cloning of dolly the sheep born?
Q: How many sheep were needed to done Dolly?
Q: Describe the procedure of cloning
Part3:The problem and the effect of Dolly the sheep
Fill in the form.
para3 The problem of Dolly | At first,the fact that Dolly emed to develop_______,then came the disturbing news that she had became___________,and she lived ____________,half the length of the life of the original sheep. |
para4 the effect of cloning in society | It raid a storm of __________,but it offers the possibility of using it to cure_______and even to produce_______. |
| |
Part 4: People's attitude to cloning
T or F
1 It is easy to get human egg cells and embryo to clone themlves.
2 China continued to accumulate evidence of the abundant medical aid that cloning could provide.
3 some countries will be cloning in wi way.
【设计说明】让学生逐段细读课文，深度理解课文。把培养学生的阅读能力落实贯彻到每一节的课堂教学当中
Debate:
What are the advantages and disadvantages of cloning?
Fill in the chart using the information from the text.
Advantages | Disadvantages |
1 Cloning can produce___________quantities of plants. 2 Cloning plants can be uful for rearch on new____species. 3 People can u cloning to ____ rious illness. | 1 Animal clones may ___earlier than the original animals. 2 Evil leaders may want to _____themlves to attain their ambitions. 3 Religious leaders raid ____ questions about human cloning. |
| |
Dicussion:Are you for or against cloning in China? Give your reasons.
