必修3Unit4Astronomythescienceofthestars[全套教案].doc

Unit4 Astronomy: the science of the stars

I单元教学目标

技能目标Goals
Talk about the science of the stars, the development of life and space travel and gravity
Practise giving instructions
Practise talking abut problems in study or life
Learn to use Noun Clauses as the subject
Learn to write an essay to show your problems and the way to overcome them.
II. 目标语言

词

汇
1 四会词汇
astronomy, atmosphere, system, violent, solid, explode, carbon, dioxide, oxygen, surface, planet, harmful, development, spread, method, depend, exist, presence, telescope, disappoint, disappointed, publish, publishing, gravity, force, gradually, cheer, float, mass
2认读词汇
astronomer, biochemistry, geophysics, solar, Big Bang, vapour, nitrogen, dissolve, amphibian, reptile, generally, mammal, global, comet, Issac Newton, Albert Einstein, Stephen Hawking, lessen, weightlessly, cabin, exhaust, exclaim
3 词组
solar system, in time, prevent…from, depend on, cheer up, now that, get the hang of, break out
语

法

Noun Clauses as the subject
Noun Clauses as the subject is also called the Subject Clause. That means a Noun Clause serves as Subject in the sentence. The words which are used in this Noun Clause are: that, whether, who, what, which, when, where, how, why, etc..
Example
1. What it was to become was a mystery.
2. It was not clear whether the solid shape was to last or not.

重

点

句

子
1. What it was to become was a mystery until the dust began to slowly combine into a ball moving around the sun. P25
2. It’s exploded loudly with fire and rock, which were in time to produce the water vapour, carbon dioxide, oxygen, nitrogen and other gases, which were to make the earth’s atmosphere. P25
3. It allowed the earth to dissolve harmful gases, which had become part of the earth’s atmosphere, into the oceans and seas. P25
4. Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. P26
5. When we get closer to the moon, we shall feel its gravity pulling us but it will not be as strong a pull as the earth’s. P30
6. Walking does need a bit of practice now that gravity has changed. P31
7. We watched, amazed as fire broke out on the outside of the spaceship the earth’s gravity increased. P31
8. Seen from space, the earth appears to be a water ball.
9. But the answers have always seemed well beyond our reach, until now.
10. Huge questions remain to be answered, before we can hope to have a complete picture of the universe we live in.
IV. 分课时教案
The First Period Intensive Reading
Teaching goals 教学目标
1. Target language目标语言
a重点词汇和短语
astronomy, atmosphere, system, violent, solid, explode, carbon, dioxide, oxygen, surface, planet, harmful, development, spread, method, depend, solar system, in time, prevent…from, depend on
b重点句子
1.What it was to become was a mystery until the dust began to slowly combine into a ball moving around the sun. P25
2.It’s exploded loudly with fire and rock, which were in time to produce the water vapour, carbon dioxide, oxygen, nitrogen and other gases, which were to make the earth’s atmosphere.
2. Ability goals
a. Enable Ss to talk about the science of the stars, the development of life and space travel and
b. Understand the text and answer the following questions:
c. Enable the Ss to understand the details about the passage, choosing the correct answer
d. Retell the passage using key sentences.
3. Learning ability goalsEnable Ss learn how to talk about the beginning of life on the earth.
Teaching important points a. Talk about the beginning of life on the earth.
Teaching difficult points教学难点
a. Understand the beginning of life on the earth.
b. Discuss the questions:
What will our future be if the earth may become too hot for the lives on it?
Why are humans the cleverest animals on the earth?
Teaching methods教学方法
a. Skimming and scanning b。Asking-and-answering activity to check the Ss’ understanding of the text.
Teaching aids教具准备
A recorder, a computer, a projector
Teaching procedures & ways教学过程与方式
Step I Presentation
Step IV Reading.
Scanning
Get the Ss to read the passage quickly and accurately and meanwhile help the Ss to form a good habit of reading.
Step V Listening
in time (for sth./to do sth.): not late
She will be back in time to prepare dinner. in / out of time: in/not in the correct time
The audience clapped in time to the music.
2. Nobody knew that it was going to be different from other planets going around the sun.
be different from: not like someone or something else in one or more ways
going around the sun is –ing form that serves as attributive.
Men breaking the law will be punished.
Can you see the girl dancing with your boyfriend?
3 Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
4. Walking does need a bit of practice now that gravity has changed.
Passage Analyzing
I Text Chart .
How life began on the earth
II Text Retelling
Retell the text using about 100 words.
Notes: Use the two questions and the chart to retell the passage;
III Moral Education
Teacher can guide the Ss to understand the text deep, making the Ss to have a scientific attitude towards science: the beginning of universe。
IV Writing Techniques
1.Writing Characteristic
1) Lead in the topic of how life began on the earth by beginning with two questions so as to arouse the readers’ strong curiosity and interest.
2) The passage tells the readers the scientific idea in order of time.
2. Writing Style
The text is common science writing, which tells the readers how the universe developed and how life began on the earth.
3. Main Idea
Through the writer’s clear description, we know that how life began on the earth. It’s a long and slow process. From the passage, we know that earth is the best place for human to live on.
Step VI Homework
Retell the passage according to the form..
Remember important language points.
The Second Period Language study
Teaching goals 教学目标
1 Target language目标语言
a重点词汇和短语
suffer, settle , realize , worry about , have got to, tie up
b重点句子：He was very disappointed.What it was to become was a mystery.
To save money, you must use as few words as possible.c. Practise talking about problems in study or life
My problem is…The difficulty is…My trouble is…The question is…My advice is…
What I think about it is…The fact is…My suggestion is…
2 Ability goals 能力目标Learn to use Noun Clauses as the subject..
3 Learning ability goals 学能目标Let Ss learn how to use Noun Clauses as the subject
Teaching important points教学重点the use of Noun Clauses as the subject
Teaching difficult points教学难点 How to teach the Ss to learn to use Noun Clauses as the subject
Teaching methods教学方法Learn grammar through practice
Teaching aids教具准备A projectorA blackboard
Teaching procedures & ways教学过程与方式
Step I Revision
1. Check retelling of the passage.
The explosion of the earth produced water vapor, which turned into water when the earth cooled down. Water allowed the earth to dissolve harmful gases into the oceans and seas. Translate the following sentences.
Suggested answers:
1. You’ll succeed in time.My car is different from yours.Who is the person standing by the door?
2. He’s always the first to come and the last to leave.Now that you have grown up you can decide it yourself.
Step II Word study
This part is a consolidation of the words learnt in this unit. Ask the Ss to do the exercise independently.
Key to the exercises:
Part1 Across: 2.float 5.mass 6.presence 8.carbon 9.mobile
Down: 1.planet 2.force 3.astronomy 4.explore 7.circle
Part2 1.energetic 2.surface 3.depends on 4.gradually 5.exists 6.prevent…from 7.spread 8.are multiplying 9.Now that
6. Part3 can be homework if time is limited.
Step III PreparationShow some example sentences on the screen.
1 A tree has fallen across the road.2 You are a student.3 To find your way can be a problem.4 Smoking is bad for you.5 “How do you do?” is a greeting.6 What she said is not yet known.7 That we shall be late is certain.
8 It’s certain that we shall be late.
Step IV Grammar
1.Give them some time to find the sentences in the passage. Then collect answers from the class.
Show the answers:
1…. Because it was not clear whether the solid shape was to last or not.
2. What scientists think is that the earth was different because of ……
3. Whether life will continue on the earth for millions of years to come will depend on ……
2.Show typical examples of how to make a Subject Clause. Guide the Ss to find out what changes we have to make when we make a sentence or combine two sentences using Subject Clause. Teachers show the example and Ss write down the sentences.
Show the answers:
How fish developed from early shellfish is well-known.
What reptiles look like and how large they are is strange.
The extinction of dinosaur is a mystery.
The importance of early plants was not known to scientists.
3.T: Turn to Page64. Read the following passage quickly and finish the eight sentences.
Check the answer: 1.what 2.what 3.why 4.what 5.where 6.when 7.how 8.what
4.Have a discussion in pairs. The topic is “My Problem”. One talks about problems in his study or life, the other gives some advice. Remind the students to use the following structures:
Step V Homework
1. Finish Part3 (P29)
2. Finish Part3 (P64)
The Third Period Listening
Teaching goals 教学目标
1 Target language目标语言
a重点词汇和短语
gravity, by chance
b重点句子
I heard about how the idea of gravity has developed over a long period of time.
Pick out the information and draw lines from the list to where the things are on the suit of the astronaut.
2 Ability goals 能力目标
Enable the Ss to understand the different ideas about gravity.
Enable the Ss to have a good understanding of the force of gravity in order to enjoy the stories fully and to become more involved and excited about studying space and the stars.
3. Learning ability goals 学能目标
Enable the Ss to appreciate that the science fiction stories are imaginary but based on fact.
Teaching important points教学重点
Listen to the material about the detailed information about different scientists and their ideas. Complete the form , make True or False judgement and answer questions.
Teaching difficult points教学难点
Discuss with partners and have a debate to find out ways to solve the problems about what a spacesuit should be like.
Teaching methods教学方法
a. Discussion
b. Listening
c Cooperative learning
d. Debating
Teaching aids教具准备
A recorder
Teaching procedures & ways教学过程与方式
Step I. Revision
Check homework exercise.
Part3 (P29):
Part3 (P64):
1. With the development of science and technology, people have come to depend more and more on the computer to deal with all kinds of things.
2. Now that many problems exist which cannot be solved, wars will probably break out.
3. He gradually got the hang of this method of research after many years’ practice.
4. The presence of that famous director cheered up all the people at the meeting.
5. We should find some ways to prevent the harmful gas from spreading.
6. He is already exhausted. We should lessen his pain instead of disappointing him.
Step II. Listening (Using language)
1.The Ss will hear different ideas about gravity of three scientists, and then fill in the blanks.
T: Have you heard of Isaac Newton? How much do you know about him?
S1: He’s English.
Step III Listening (WB P62)
1.Part1.
T: Who’s Yang Liwei?
S1: He’s our hero who traveled into space on October15,2003.
2.Part2.
T: Now focus your attention on Part2. Then we’ll listen to the tape again..
Play the tape and pause when the students need to write information down. Then collect answers.
3.Part3.
First ask Ss to talk about the answer. If necessary play the tape again for Ss to check the answer.
Answers: 1.There’s a special seat to throw him out of the space rocket if things went wrong.
2.The answer can be different.
Step IV Listening Task (P65)
T: Do you want to have a space walk?
S: Yes, of course..
Key to Part2: 1.oxygen can (on the back) 2.water system (the part of the suit covering the body) 3.gravity boots (on the feet) 4.left engine (on the left side) 5.right engine (on the right side) 6.tool kit (on the waist, at the back)
Step V Homework
Today we have listened to three materials. After class, you should listen to them again and sum up what you have learnt from them. For the homework, think about a question: What needs to be an astronaut?
The Fourth Period Extensive Reading
Teaching goals 教学目标
1 Target language目标语言
a. 重点词汇和短语
force, gradually, float, mass, cheer up, now that, break out
b.重点句子：
When we get closer to the moon, we shall feel its gravity pulling us but it will not be as strong a pull as the earth’s. P30
Walking does need a bit of practice now that gravity has changed. P31
We watched, amazed as fire broke out on the outside of the spaceship the earth’s gravity increased. P31
2 Ability goals 能力目标
a Discuss the three ways in which gravity changed on the moon. and some information about black holes.
b. Discuss the questions about the passage: How did gravity change on the moon? What does a black hole look like? What will happen if an object is near the black hole?Teach the Ss to read passages with feeling.
3 Learning ability goals 学能目标
Enable the Ss to get to know about gravity and black holes.
Teaching important points教学重点
Talk about gravity and black holes.
Teaching difficult points教学难点
a. Discuss the answers to the questions
b. Teach the Ss to read the passage with feeling, paying attention to pronunciation and intonation.
Teaching methods教学方法
a. Fast readingb. Dealing with comprehension questionsc. Discussion
Teaching aids教具准备A projector, a computer, a recorder
Teaching procedures & ways教学过程与方式
Step I RevisionCheck homework
T: Last class we have learned different ideas about gravity, what quality an astronaut should have and some equipment on a spacesuit. Now answer the question: What needs to be an astronaut?
S: An astronaut should have good health, excellent degree, many years’ training, right height and weight. They also should be calm, firm, patient, mature and hard-working. They must be able to adapt to the harshness of life in space.
Step II Reading (Page30)
1.Ask the students to read the passage quickly and fill in the form. Then check the answer.
T: In last lesson, we have learned some information about gravity. Today we’ll know gravity in details. Read the passage and fill in the form.
2.Listen to the tape and imitate he tape. Then practice reading aloud the dialogue with feeling.
3.Ask two or three pairs of Ss to read the passage with feeling.
Step III Reading Task (Page66)
This reading passage is about black holes.. After the first reading, let the Ss answer some questions. Show the quest