| unit 3 science versus nature (welcome to the unit)(译林牛津版高二英语必修五教案教学设计) |
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Period 1 Welcome to the unit Teaching Aims: Make Ss realize the rapid development of science and the great benefit it brings to us. Make Ss know the importance of using sth.( such as cloning) in an appropriate way Teaching Important Points: The advantages and disadvantages of cloning Teaching Difficult Points: Make Ss know about the new technology—cloning and share their opinions on it Teaching Methods: Free talk , discussion Teaching Aids: The multimedia and the blackboard Teaching Procedures: Step 1 Lead-in 1. T: You must know about many famous people. Bu t do you know about some famous animals? Why is Dolly famous world wide? What do you know about the cloning technology? Its characteristics? Cloning :a kind of biotechnology which aims to produce an exact copy of an animal or a plant from its own cells Exactly the same as the original ones About Dolly (pic 1) * the world’s first cloned mammal * created by Scottish scientist in 1996 * sparked worldwide interest and concern after its birth * many countries including Germany, France etc. have banned human cloning since Dolly ‘s birth * died in 2003 because of lung disease there are still many countries doing research on cloning technology Step 2 Speaking 1. Let Ss look at the rest of the pictures and introduce sth.about them. Pic 2 The world’s first cloned mule(驴), was born on May . He is created from a cell of his brother. Pic 3 The world's first cloned cat, kitten, named Cc (copycat). It was created using a cell taken from an adult cat, Rainbow. Pic 4 The world's first cloned pigs were produced from an adult female pig using a different technique from the one that produced Dolly. Pic 5 They are the second adult-animal clones research centre said the new technique would be used to breed better cattle strains with higher-quality beef or greater milk capacity. Pic 6 The first cloned monkey is the first genetically modified monkey. The technology is different from that used for dolly. It is another incremental step toward designing and perfecting new treatments for human genetic disorders. 2. T; From these pictures, can you identify the differences between the cloned animals and normal ones? Do you think these animals can live a normal life as normal animals.? What might be the differences between these cloned animals and normal ones ? For example, does the mule in Picture 2 run as fast as his brother? Do you think Dolly death has sth to do with its identity ( a clone)? Step 3 Discussion 1. Discuss the given topic in groups of four. 1) What do you think of the new kind of technology? 2) Does it have advantages or disadvantages? What are they? (The new kind of technology has caused widespread discussion. It can help cure many patients with genetic diseases and save lots of people’s lives and even prevent some endangered animals from dying out.. However, on the other hand, if it is used to clone human beings, it will cause ethical problem and violate human rights and go against the laws of nature. No one can predict how negative the consequences could be. And some people may use it for some evil purposes.) 3) Do you think it would be a good idea to clone humans some day? Do you want another person to be exactly the same as you? Why or why not? 4) If you have the chance to clone sb. who do you want to bring to life? Why? Step 6 Writing Write a short passage about SS/ view on cloning Homework: Preview the text on P42. |
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