Learning about Language第二课时教案

Cloning 教学设计

单位：汝阳县实验高中

姓名：高婷丽

教学设计

Unit2 Cloning 汝阳县实验高中 高婷丽

Teaching aims Knowledge objects: 1. To have the students master the usage of the important words and expressions. 2. The students can be aware of the cultural aspects of humor by learning this lesson. Ability objects: 1. To develop the Students’ abilities of listening, speaking, reading and writing. 2. To improve the students’ reading ability, especially their skimming and scanning ability. Emotion or moral objects: 1. To enable the students to learn to be faced with difficulties and overcome 2. To encourage them to keep up optimistic attitude towards life. The key and difficult points 1.Teaching key points: To improve the students’ reading ability by skimming and scanning. 2. Teaching difficulties: To help the students to grasp the main idea and the key words of each paragraph as quickly as possible, as exactly as possible. Teaching methods them.

Communicative Approach, Whole Language Teaching, Task-based Language Teaching, Total Situational Action. Teaching Procedure Step1: Warming up In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-made. Explain how they differ. Natural clone is one that occurs from the “parent ” in a natural form of cloning without human help, While Man-made clone is one that produced through human intervention(介入) . Step2: Pre-reading In pairs ,discuss what you understand about cloning. Then list the questions you want to find out .Share your lists with one another. Questions about cloning 1. What is a clone? A clone is group of cells or organisms that are genetically identical and have been produced asexually(无性生殖

/繁殖)from the same original cell. They include natural and man-made clones. 2. How is a clone produced? The cloning of plants is simple and relatively easy. It can be done by taking cuttings (man-made cloning) or letting the plant produce its own runners (natural cloning). The cloning of animals is more complicated. It was not achieved until 1996 and is fully explained in the first reading. 3. What benefits can humans gain from cloning? First, By cloning, farmers can produce quantities of different commercial plants.

Second,

Medical cloning can help cure serious illnesses that ruin one’s quality of life (such as Parkinson’s disease or Alzheimer’s disease).Third, Cloning can help save endangered animals.

4. What problems may arise when humans are cloned? 1) People may want to clone themselves so they can live forever. 2) People may want to clone dead children. 3) People may want to clone their favorite pets. Step3: Reading Task1 Read the passage quickly and do the following exercises. 1. The main idea of the text is____ A. Animal cloning is very valuable and can benefit the world. B. Animal cloning could be misused by bad people so it must be forbidden. C. Animal cloning is well developed because Dolly the sheep was born. D. The procedure of animal cloning ,the arguments and concerns about its future.

2. Which of the following statements about cloning is NOT true according to text? A. Cloning is something that has been developed quite recently. B. Twins that look exactly the same are originally from the same egg. C. Cloning is used by gardeners to make more money. D. Animal cloning is much more difficult than plant cloning. 3. The cloning of Dolly the sheep succeeded because____. A. its easier to clone a sheep than other animals B. the scientists were determined and worked hard with patience C. the scientists were rewarded and got lots of money D. many other attempts to clone mammals failed 4. The lamb is the clone of the cell from sheep B because_____. A. it provides the egg cell B. it gives birth to the lamb C. it provides the nucleus D. it is a female sheep 5. The sheep that donated the somatic cell most probably lived ____ years. A. 3 B. 6 C. 9 D. 12 Task 2 Choose the main idea of Paragraph 1 to 5. (Find out key words to help you) Para. 1 A.The major uses and procedures of cloning Para. 2 B.People’s reaction to cloning

Para. 3 C.The problems of Dolly Para. 4 D.The definition of cloning Para. 5 E.The impact of Dolly Discussion Cloning people is a good thing ,or a bad thing? 克隆人是福音, 还是恶兆？

1.克隆技术现在还不成熟,克隆人可能有很多先天性生理缺陷。

2.克隆人的身份难以认定,他们与被克隆者之间的关系无法纳入现有的伦理体系。

3. 克隆技术有可能被滥用,成为恐怖分子的工具。

4. 从生物多样性上来说,大量基因结构完全相同的克隆人,可能诱发新型疾病的广泛传播,对人类的生存不利。

Homework 1.

Discussion: What’s your opinion about cloning?

2.

Do exercises on page13.