人教版高二英语选修6 Unit 4 Global warming单元教案

Unit 4 Global warming

     The First Period Speaking and Listening

Teaching goals  教学目标

1. Target language  目标语言

a. 重点词汇和短语

energy, light (v.), heat (v.), renewable, non-renewable, fuel, blame, run out

b. 交际用语

Expressing agreement and disagreement

Yes, I agree with you.Yes, I think so.I believe that you’ve got it right.I don’t think so.

I don’t think that’s right.I’m afraid you are wrong.

2. Ability goals  能力目标

Enable the students to talk about different sources of energy and express their own ideas.

3. Learning ability goals  学能目标

Help the students learn how to give their ideas about the use of energy.

Teaching important points 教学重点

Enable the students to express agreement and disagreement.

Teaching difficult points 教学难点

Enable the students to learn how to express agreement and disagreement.

Teaching methods  教学方法

Brainstorming, listening and group work.

Teaching aids  教具准备

A tape recorder and a computer.

Teaching procedures & ways  教学过程与方式

Step ⅠRevision

Check the students’ homework and have a discussion with the students about the mistakes Mary made. Let the students have a clear understanding about the mistakes and then correct them.

Step ⅡWarming up

Sample answers:

 

Renewable	Non-renewable
Wind power	Coal
Solar power	Natural gas and oil
Hydroelectric power	Nuclear power

 

Step Ⅲ Listening and Discussing

T: Now please turn to page 31. Let’s do listening. Before you listen to the tape, please read fast the statements in Exercise 1 to find out the listening points. Pay much attention to the key points while listening.

Play the tape for the first time. Help the students get a general understanding about the dialogue. The students listen and try to finish Exercise 1. Play the tape again, train the students’ ability to spot specific information and understand the implication in the dialogue. The students listen and finish Exercise 2.

Several minutes later.    

Step Ⅳ Homework

1. Review the new words and expression_r_rs you learned in this class.

2. Preview Reading.

 

 

The Second Period Reading

Teaching goals 教学目标

1. Target language  目标语言

a. 重点词汇和短语

compare, phenomenon, graph, fuel, trap, data, climate, catastrophe, consequence, range, per, glance, compare to, come about, fierce debate, result in, build up

b. 重点句式

There is no doubt that the earth is becoming warmer. P26

Without the‘greenhouse effect’, the earth would be about thirty-three degrees Celsius cooler than it is. P26

They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide. P26

2. Ability goals 能力目标

Enable the students to talk about the causes and effects of global warming.

3. Learning ability goals 学能目标

Help the students learn how to talk about the causes and effects of global warming and express ideas about what people should do about it.

Teaching important points教学重点

Help the students learn how to debate over the topic “We should do nothing about global warming.”

Teaching difficult points 教学难点

Enable the students to learn the writing skills of the text and get a better understanding of articles of this kind.

Teaching methods 教学方法

Listening, reading and group work.

Teaching aids 教具准备 

A recorder and a computer.

Teaching procedures & ways 教学过程与方式

Step ⅠRevision

Check the homework.

Review the useful expression_r_rs about agreement and disagreement.

Show the students some pictures on the screen. The students have to give names of different energy sources relative to the pictures and deicide which energy sources are renewable and which are not. Then ask the students to tell the effects of using these energy sources.

Step Ⅱ Pre-reading

Step Ⅲ While-reading

Get the students to read the passage fast and meanwhile help the students form a good habit of reading.

After a few minutes.

T: How many parts can this text be divided into?

T: Any different ideas? OK. Now let’s finish the form on the screen.

Show the form on the screen and let the students complete the form.

 

Main ideas of each part	Writing techniques

 

Step Ⅳ Comprehending

Let the students read the passage again to find out the answers to the questions in Exercises 1 and 2.

T: Now let’s listen to the tape. While listening, pay more attention to specific information. Then read the whole passage by yourselves. Try to find out the answers to questions in Exercises 1 and 2. You may work in groups.

Step Ⅴ Debate

Get the students to debate over the statement: We should do nothing about global warming. Let them work in groups of six to prepare it.

T: Now you are going to have a debate: We should do nothing about global warming. Please follow these instructions.

Put the following instructions on the screen.

● Get into groups of six. Decide which three in your group are going to agree with the statement (Group A) and which three are going to disagree with the statement (Group B).

● Group A discuss why they agree with the statement; Group B discuss why they disagree.

● Group A and B get together. Tell each other the reasons why agree or disagree with the statement.

T: We don’t have time to do it in class. Please finish it after class. Try to collect as much information as possible on the Internet and share it with the others in class. Next class I’ll get some groups to act out your debates.

Step Ⅵ Homework

1. Read the passage again and review the new words and expression_r_rs.

2. Prepare the debate in groups.

3. Preview Using Language ― WHAT CAN WE DO ABOUT GLOBAL WARMING？

 

 

The Third Period Extensive Reading

Teaching goals 教学目标

1. Target language 目标语言

a. 重点词汇和短语

pollution, electrical, motor, can (n.), microwave, disagreement, title, make a difference, put up with, leave an electrical appliance on, so long as, and so on

b. 重点句式 P30

Together, individuals can make a difference.

It takes a lot of energy to make things from new materials…

Remember — your contribution counts.

2. Ability goals 能力目标

Get the students to realize what individuals can do about global warming.

3. Learning ability goals 学能目标

Learn what to do in daily life to reduce the carbon dioxide content in the air.

Teaching important points 教学重点

Enable the students to know what to do in daily life to reduce the carbon dioxide content in the air.

Teaching difficult points 教学难点

Enable the students to learn how to make a poster.

Teaching methods 教学方法

Listening, skimming and group work.

Teaching aids 教具准备

A recorder and a computer.

Teaching procedures & ways 教学过程与方式

StepⅠRevision

Check the students’ homework to see whether they have mastered what they learnt last class.

Check their group work — debate.

Step Ⅱ Lead-in

Step Ⅲ Listening and Reading

Get the students to read the two letters and then fill in the table on page 30.

Skim the letters and find who the writers are and what their purpose of writing the letters is.

Scan the letter and list Earth Care’s suggestions and then in groups, discuss whether you think you can carry out each suggestion. Give reasons for your answers.

Step Ⅳ Making a poster

Help the students learn how to make a poster. The teacher may collect some posters or pictures about the environment and show them to the students in class.               

Step Ⅴ Homework

Finish the poster.