人教版高中英语必修三Unit4Reading教学设计.doc

Unit4 Reading practice 名师教学设计
1. Teaching Analysis 教情分析
1.1 Teaching objectives-教学目标
1.1.1 Language target语言目标
1.1.1.1 Key words & expressions重点词汇和短语
1.1.1.1.1 For applying: theory, billion, violent, atmosphere, unlike, fundamental, harmful, chain, thus, puzzle, biology, biologist，in time, give birth to, in one’s turn, prevent...from;
1.1.1.1.2 For comprehending: atom, globe, global, carbon, vapour, presence, dissolve, acid, reaction, multiply, oxygen, mammal, dioxide，lay eggs, carbon dioxide;
1.1.1.1.3 For recognizing: Big Bang, nitrogen, shellfish, amphibian;
1.1.1.2 Sentence structures:
① What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.
② It was not immediately obvious that water was fundamental to the development of life .
③ After that, some huge animals, called dinosaurs, developed.
④So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
⑤They were in time to produce carbon, nitrogen, water vapour and other gases.
⑥As a result of this, many scientists believe that the earth may become too hot
to live on.
⑦The earth became so violent that it was not clear whether the shape would last
or not.
1.1.2 Ability goals能力目标
1.1.2.1 Enable Ss to know how to guess the new words according to the passage.
1.1.2.2 Enable Ss to talk about the science of the stars, the development of life .
1.1.2.3 Enable the Ss to understand the details about the passage.
1.1.2.4 Enable the Ss to retell the passage using key sentences.
1.1.3 Emotion goals情感目标
Enable Ss to think about the origin of life on the earth and learn how to protect the earth.
1.2 Important & difficult teaching points-教学重难点
1.2.1 Important teaching points-教学重点
How to talk about talk about the origin of life on the earth.
1.2.2 Difficult teaching points-教学难点
How to understand the origin of life on the earth .
2. Student analysis学情分析
2.1 Fundamental state基本情况
通过第1课时的listening and speaking，学生对本单元的话题Astronomy: the science of the stars已有所了解，并进一步丰富了一些有关天文学的信息和知识，同时激活了学生的思维，为本节课进行短文的阅读和理解提供了支撑。
2.2 Knowledge reserve知识储备
Students know some knowledge about space by speaking and listening in period one. What are learned in period one gets Ss interested in the topic of this period.
2.3 Class data本班实际
3. Teaching methods教法建议
question and answer method问答法，task-based teaching method任务型教学法，communicative approach交际法，situational teaching approach情景教学法,  group cooperation research approach小组合作探究法
4. Teaching Aids教学辅助
blackboard , computer or ipad, projector
5.Teaching procedures-教学进程
5.1 Step I Leading in & Pre-reading:
5.1.1 Show Ss two pictures about the beginning of the earth.
1. It is believed that ________ created human beings in the bible.
2. It is said that __________ created humans in China’s fairy tales.
(Teachers show two pictures to present some culture’s own ideas about how life began on the earth.)

5.1.2 Show another picture of Big Bang.
(Teachers get Ss to read the title and look at the pictures on P25-26.Enable Ss to predict what the reading will be about.)
5.2 Step II Reading practice-阅读训练
5.2.1 Read the text and understand it on the whole.
I. Read to find out the main idea of each paragraph.
① What is/are the key word(s) of each paragraph?
② What is the main idea of each paragraph?

Key word(s)
The main idea
Para.1

Para.2

Para.3

Para.4

Para.5

( Get Ss to read the text to find the key words and the main idea of each paragraph. After 8 minutes discuss in groups and then check the answers.)
5.2.2 Skim the reading passage to put the order of development of life into a timeline.
(After 2minutes check the answers with Ss. )
The right order:10、7、3、8、4、9、6、1、5、2、12、11
5.2.3 Scan to find the specific information. for questions 1-3 and 5 of exercise 3on P27.
(Teachers guide Ss to read questions1-3 and 5 of exercise 3 on P27 first, and then scan the text to answer the questions. After 5minutes, check the answers with the whole class. )
Keys:
1.Because the water remained on the earth.
2.Because plants provide oxygen for animals to breathe.
3.Because dinosaurs died out long before human beings developed on the earth.
5.Human beings caused global warming.
5.3 Step III Text interpretation-文本解读
5.3.1 Further understanding -深层理解
(Teachers guide Ss to understand the text by deciding True or False. )
1. True or False:
①The theory is generally accepted that the universe began with a “Big Bang” .
②It was until between 4.5 and 3.8 billion years ago that what the earth was to become.
③Like the earth, water was fundamental to the development of life on Mars.
④The life on land appeared earlier than that in oceans and seas.
⑤Humans have known why dinosaurs suddenly disappeared.
⑥The earth will become too hot to live on, unless humans look after the earth very well.
⑦ According to the text, human beings would disappear in the end.
⑧ Mammals appeared after the development of dinosaurs.
Key: ① T ② F ③ F ④ F ⑤ F ⑥ T ⑦ F ⑧ T
5.3.2 Difficult sentence structure -难句理解与运用
( Complete the sentences and understand them in English or Chinese.)
(1) Fill in the blanks with proper words or the proper form of the word given.
① What it was to become was uncertain until between 4.5 and 3.8 billion years ago _______ the dust settled into a solid globe.
② It was not immediately obvious _______ water was fundamental to the development of life .
③ After that, some huge animals, _______(call) dinosaurs, developed.
④So ________life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
⑤They were in time ______________(produce) carbon, nitrogen, water vapour
and other gases.
(2) Complete the sentences.
⑥As a result of this, many scientists believe that________________________
_________(地球会变得太热而不能居住).
⑦The earth became so violent that it was not clear whether the shape would last
or not.
5.3.3 Emotion & science -情感与科学
(Teachers guide Ss to discuss in groups and report their discussions to the whole class.)
1. How life began on earth is one of the biggest puzzles that scientists found hard
to solve. What other puzzles are hidden in the passage? Find them out and do
some research.
puzzles: ________________________________________________________
2. In order to make life continue on the earth, what we humans should do at
present?
We should________________________________________________________
_________________________________________________________________
5.4 Step IV Talking and sharing -讨论与分享（含自我总结与评价））
5.4.1 Guide Ss to do self-evaluation:
What have I learnt in this period?
What am I still confused about?
What should do to make them clear?
6. Homework课后作业
Search for more information about other ideas on the origin of life on the earth. Compare them with the theory learned in the text.