unit3reading第一课时知识结构图.doc

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牛津高中英语必修五unit3 Science and nature
Teaching Aims :
1. Understanding of The perfect copy
2. Able to finish the exercises
3. Know about cloning and realize it is bad to toy with nature
Teaching main &difficult points ：
Understanding of this text and exercises
Teaching methods :
三学一教四步教学法
Teaching aids :
Blackboard, learning sheet , multimedia player
Teaching procedures :
Step1: lead-in (短语检测)
Show students some pictures concerning clone
Step2：Learning Aims(明标自学)
The perfect copy &practice
Step 3: Self-study instruction（自学指导）
v Please use dictionary or reference book（高效） to help you solve these problems
v Turn to your partners for help , and discuss with them
Activity 1(自学内容一) (3mins)
Read the reading strategy and tell us the steps of understanding scientific terms .
Step1

Step 2

Step 3

Ask one student to fill in the blanks and translate the important phrases
Work out;come across; be amazed to do ; make sense
Activity2 自学内容二：（7mins）
Listen to the tape and try to imitate the pronunciation and then read the text by yourselves ; finish partA
Part A:
KEYS : 1. L8 . 2. L9 3. She is against human cloning .(L34)
Ask three students to answer the questions ; if all agree with them , there is no need explaining .
Activity3 自学内容三：（10mins）
Re-read the text carefully and do the true or false questions of C1. and find out the main idea of each paragraph
Exercise 1: C1 :KEYS : 1. F2.F3T4.T5F6F
Exercise 2:
Ask several students to answer the questions ; if all agree with them , there is no need explaining .
Activity 3 (自学内容四)（10mins）
Read the two letters carefully, and judge whether the statements are true or false:
Pauline Carter thinks:
（T）1.the nature will pay back if we toy with nature.
(F) 2.we should clone fewer babies to reduce Earth’s population.
(T)3.the lady who cannot have a baby can adopt an orphan, but not have a cloned baby.
Coline Jake thinks:
(T)1.the scientific advances mentioned in the article is very terrible.
(T)2.scientists have succeeded in challenging questions of morality.
(T)3.human cloning is a good way to save her daughter who has died.
Activity4合作释疑（5mins）
Finish C2
Step4: practice 当堂检测（15mins）
Attitudes towards
the first cloned human embryo
Pro-cloning
It can produce tissues and organs that are of great(1)____value______.
Anti-cloning
We are (2) ___likely_____ to produce a real-life Frankenstein’s monster.
Attitudes towards
the birth of Dolly the sheep
Pro-cloning
Cloning is a wonderful (3) ___scientific_______ breakthrough.
Anti-cloning
Cloning would (4) ___create/lead to _________ more diseases in the animal world.

Representatives
Ian Wilmut
He never (5) __intends____ to create copies of humans. Instead, he thinks research efforts should concentrate on (6) ___curing___ diseases.
Faye Wilson
(7) ___failing ____ to have a baby,she is (8) ___anxious ____ to have a child that is genetically related to her.
Severino Antinori
He wants to be the first to clone a human being.
Chinese scientists
They have focused their efforts on cloning animals and stem cells.China has achieved great (9) _sucees______ in producing clones of cows and goats,and continues to research ways cloning can be (10) __benefit__ to mankind.
Step 5: Homework

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