unit3reading第一课时知识结构图.doc

3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 .Step1Step 2Step 3Ask 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.T5F6FExercise 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 Earths 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 C2Step4: practice 当堂检测（15mins）Attitudes towards the first cloned human embryoPro-cloningIt can produce tissues and organs that are of great(1)_value_.Anti-cloningWe are (2) _likely_ to produce a real-life Frankensteins monster.Attitudes towards the birth of Dolly the sheepPro-cloningCloning is a wonderful (3) _scientific_ breakthrough.Anti-cloningCloning would (4) _create/lead to _ more diseases in the animal world.RepresentativesIan WilmutHe 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 AntinoriHe wants to be the first to clone a human being.Chinese scientistsThey 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 2