Using LanguageⅡPPT配套教学设计内容

教学设计

Book8 Unit2

Using Language The Return of The Dinosaurs? 武汉市第十四中学

张郑平

Teaching Aims 教学目标

Knowledge and Ability:

1. Enable students to master words and expressions related to cloning. 2. Practice students’ reading skills with a special focus on tracking details and comprehending complex sentences. 3.

Strengthen the speaking skills, in particular, the state points and reasons logically.

Process and method: 1.

Lead students to understand key facts related to cloning through reading and listening. 2.

Explore, discuss and present own opinions on cloning, taking Yangtze River Dolphin as an example.

Emotion, Attitude and Values: Arouse students’ interest in biotechnology and life sciences.

Important and Difficult Points 重难点

Help students to have summarize their thoughts on cloning and express their points logically.

Analysis of the textbook 教材分析

This period is the using language section of Book 8 Unit 2, whose theme is cloning. The teaching material of this lesson includes three parts.

The first part is the reading passage on Page 15 with the title The Return of the Dinosaurs? It is mainly about the possibility of cloning extinct animals like dinosaurs which is appealing to teenagers. The second part is listening practice on Page 17, in which two speakers have a controversy over whether cloning animals is ethical. The last part is delivering a speech on whether Yangtze River Dolphin should be cloned.

About the learning background 学情分析

Senior 2 students have accumulated relatively large amount of vocabulary, therefore reading comprehension won’t be a problem. But the expressions related to science are never easy to master, which adds to students difficulty in expressing their ideas. What’s more, background information associated with cloning is still limited, thus students need to listen attentively to understand the listening segment. Only by mastering relevant words and expressions, as well as 1

obtianing some background knowledge can this period of learning be rewarding.

Teaching Methods 教学方法

Discussion, Co-operative Learning, presentation

Teaching Resources

教学资源与媒体

Movie clip, audio, PPT

Teaching Procedure 教学过程

Step 1

Lead-in

Time: 2 min Teacher：Previously we have learnt something about cloning, many people wonder what can be cloned? Well, let’s watch a movie. Teacher: What animals did you see in the film?

学生活动预设：Dinosaurs Teacher: In reality, are we able to clone dinosaurs? 学生活动预设：Students’ answers may vary.

Teacher: Well, the answer is in our textbook. Let’s go through the text, and answer questions.

设计意图：通过观看《侏罗纪世界》电影片段，激发学生对克隆的兴趣，快速导入文章。

Step 2

Reading

Time: 10 min Skimming Task Teacher: Is it possible to bring dinosaurs back to life? Students: No.

Suggested answer: Based on what we know now, you cannot clone animals if they have been extinct longer than 10,000 years. Actually, dinosaurs disappeared 65,000,000 years ago.

Reading for details Teacher: Read PartII carefully, find out How do we judge whether it is suitable to clone an extinct species? Students: （1）

The initial requirement is that you need _perfect DNA__ （2）

All Efforts will be in vain if there is not enough diversity in the group to overcome illness. （3）

It would be unfair to clone any extinct animals if they were to live in a zoo.

Follow-up questions ①

What’s perfect DNA? What is the use of the DNA.

②

What does “diversity in the group” mean?

2

设计意图：理解细节是一项重要的阅读技能，学生通过阅读课文，找出恐龙为什么不能被克隆，这个背景知识以及从语料中获得的词汇为本节课后面的语言输出环节打下基础。

Step 3

Listening

Time: 10 min Teacher：We know how to judge whether an animal is worth cloning or not. But is cloning itself, right or wrong? Well, here we have two speakers arguing about this topic. Listen and find out their viewpoints. Rachel (Against Cloning) 1.

Cruel to animals

2.make animals do unnatural things 3.the method is a dead end 4.weaken the species Xiao Qing (Support Cloning) 2.

Scientist are doing a wonderful job 2.bring people’s favorite pets back to life

3. benefit: produce cures for serious illnesses 4. science will solve the problem occurred in cloning.

设计意图：播放一段与克隆有关的听力，对话双方的主要观点以类似微信聊天的界面在PPT上呈现给学生，让学生既清晰地看出主要观点，也提升对听力理解的兴趣。学生可以边听边在学案上完成图表填空，学案上的提示词降低了听力的难度，有利于学生能力的逐步提升。从听力中获得的观点也让学生对整个克隆话题有个更深入认识，为最后的讨论积累素材。

Step 4 Further Thinking

Time: 5 min

Teacher：

Further Thinking 1: Why does Xiaoqing support cloning extinct animals?

Students: First, we can bring favourite pets back; Second, cloning animals may provide cures for illness. Teacher:

According to a recent news report some scientists are trying to clone extinct animals, for example dodo bird. Refer to the picture on the screen and think about this question. Further Thinking 2: What are the benefits of cloning extinct animals?

设计意图：截屏一篇有关克隆的外语新闻，结合渡渡鸟的例子引发学生对这个克隆的益处进行深入思考，分析这个问题的社会价值。使用标签云图启发学生进行头脑风暴。

Step 5

Presentation

Time: 13 min Teacher：Yangtze River Dolphin was a lovely species in China, but it has disappeared for years. Suppose you are a representative of Chinese teenagers in a World Science Forum. Talk about your view on whether Yangtze River Dolpin should be cloned.

Special attention: use logical conjunctive words to coordinate your speech.

设计意图：在学案和PPT上均展示白鳍豚的简介。学生小组讨论，总结白鳍豚是否应该被克隆，最终通过一位代表发言，展示本组观点。PPT上的细分问题以及黑板上的短语板书，都有助于学生在思路和表达上完善自己的讨论成果。

3

Step 6

Assignment

Homework: You are a reporter on an English website, and you have been asked to write an article on this class presentation. Write down classmates’ views on this Yangtze River Dolpin, and add your own ideas to the article. The article should be around 100 words.

Blackboard Design 板书设计

conclusion The Return of The Dinosaurs?

Perfect DNA

Diversity of genes habitat

Useful Words & Expressions bring…back

extinct species is beneficial to…

a cure for …

4