广东省惠州市惠东县惠东荣超中学高中英语 Unit4 Reading学案 新人教版必修3

广东省惠州市惠东县惠东荣超中学高中英语 Unit 4 Reading学案

新人教版必修3

【学习目标】

1.分享有关宇宙的构成、地球的形成、宇宙大爆炸、生物进化的资料；

2.了解边缘科学、地球生命的起源，了解万有引力、黑洞和太空旅行等天文知识，培养对

科学的兴趣和探究科学的热情；

3.了解作者的写作特点，培养创造性思维。

【方法指导】

1.通读课文，理解文章大意

2.再次细读课文，理解细节内容

课前预习:

①预读课文，找出难懂的句子，与同伴交流学习；

②收集有关宇宙的构成、地球的形成、宇宙大爆炸、生物进化的资料。

课堂探究案Exploring Case

Step 1: Warming up & Pre-reading

Discuss with the classmates in your groups about the following questions:

1)Where do we come from? Who are our ancestors?

2)Each religion and culture has its own ideas about how life began on earth. What

do you know?

3)In our solar system eight planets circle around the sun. What are they? How to

remember the order(顺序) of the eight planets(行星) ？

4)What interests you in astronomy? Do you know any questions that astronomers are

interested in?

A Quiz Game(知识小竞赛):

1. How old is the earth?

A. About 3.5 billion years

B. About 4.5 billion years

C. About 5.5 billion years

D. About 6.5 billion years

2. ______ of the earth surface is covered by water.

A. 20%

B. 30%

C. 50%

D. 70%

3. How many planets are there in the Solar System?

A. 6

B. 7

C. 8

D. 9

4. What is the total population of humans on the earth?

A. About 3.5 billion

B. About 4.5 billion

C. About 5.5 billion

D. About 6.5 billion

5. How long does the rotation of the earth take?

A. 12 hours

B. 24 hours

C. a month

D. 365 days

6. Which continent is the smallest?

A. Africa

B. North America

C. South America

D. Oceania

7. On what day is the Earth day celebrated?

A. April 22

B. May 4

C. August 21

D. November 11

8. Which ocean is the largest?

A. The Pacific Ocean

B. The Arctic Ocean

C. The Indian Ocean

D. The Atlantic Ocean

9. Which country has the largest area?

A. Canada

B. China

C. Russia

D. U.S.A

Step 2: Prediction:

1. Look at the picture on P25. What can you see?_____________________________

2. Now combine the title and the pictures, and then predict what the reading will be about? _______________________________________________________

Step 3: Fast reading

Skim the passage and match the main idea with each paragraph.

Para. 1 The formation of the earth.

Para. 2 The importance of water for life.

Para. 3 A widely accepted theory about the formation of the universe. Para. 4 The arrival of humans and their impact on the earth.

Para. 5 The development of plants and animals on the earth.

Scan the text and choose the best answer and choose the best answer.

1. Why was the earth different from other planets?

A. It produced a lot of heat.

B. The water remained.

C. The water disappeared.

D. It was the oldest planet.

2. Why was life able to develop on the earth but not on other planets?

A. The earth had a solid shape.

B. The earth did not have harmful gases in its atmosphere.

C. The water stayed on the earth but not on other planets.

D. The earth was not too hot and not too cold.

3. Why was it necessary for plants to grow before animals?

A. Animals needed plants to protect them from the sun.

B. Plants provided oxygen for animals to breathe.

C. Animals could hide from hunters in the forest.

D. It was easier for plants to grow.

4. It can be inferred from the text that ___.

A. after “Big Bang”, what the dust was to become remained a mystery

B. plants appeared before the animals

C. plants multiplied and filled the oceans with oxygen

D. plants played an important part in the appearance of the animals

Time What happened?

Big Bang _________began to form and combine to create _______ and

other bodies.

●Dust settled into a solid and ______ globe.

●The earth __________ to produce its ___________.