Unit3Theworldofscience-DevelopingIdeas课件--高中英语外研版（2019）必修第三册.pptx

Unit3 Lesson3Developing ideasPre-readingRead the short introduction toBenjamin Franklin and share any other information you knowabout him.Vocabularydraft v. 起草，草拟declaration n.声明，宣告experiment n.实验lightning n.闪电fiction n.虚构的事metal n.金属attach v 系，绑flash n.闪光conduct v.传导scientific adj.科学的entirely adv. 完全地gravity n.重力account n. 记述proof n.证明，证据SkimmingRead the passage fast and answer the questions.1. What did Franklins experiment aim to prove? His experiment aimed to test if lightning was really produced by electricity or something else.2. What does the new study say about the story of Franklins experiment? New research suggests that the story may be fiction instead of fact. 3. Why does the author offer the story about the apple falling Newtons head in the text?He gives another example to demonstrate the argument of the passage that the stories behind inventions may not be true. Match each paragraph with its main idea.Para.1 A.Questioning accepted ideas.Para.2 B.Benefits of the stories about exploring science.Para.3 C.Benjamin Franklins famous experiment.Para.4 D.Facts should be proved.Para.5 E.Introduction of the topic.Para.6 F.Not everything about the experiment is true.Key:para. 1-E para.2-C para.3 -B para.4 F para.5 -A para.6 DScanning1.Read the text carefully and choose the best answer.1.What did Franklins famous experiment aim to prove?A.It is dangerous to fly a kite during a storm.B.People were interested in electricity.C.Franklin was a great scientist.D.Lightning was related to electricity.2.What does the third paragraph mainly tell us?A.Schools should carry out more experiments.B.Franklins lightning experiment influences students much.C.It is important to find truth.D.Just one generation of students are curious about Franklin.3.What can be inferred from the passage?A.Franklin died from an electric shock.B.Accepted ideas are worth questioning.C.It is generally believed that an apple fell on Newtons head.D.Fiction is more interesting than the truth.4.What should we do to prove facts?A.Making up fictions.B.Exploring science.C.Carrying out experiments.D.Educating more schoolchildren.5.Whats the authors attitude towards the story of Franklins experiment?A.DoubtfulB.CuriousC.ObjectiveD.Not mentionedKey: 1.D 2.B 3.B 4.C 5.A2.Number the statements to show how peoples attitude towards Franklins experiment have changed. 1.Franklins spirit of scientific exploration is still considered an inspiration. 2.People are amazed at and inspired by Franklins experiment. 3.Scientists questions what really happened in Franklins experiment.Think&Share1.How do you understand the statement “.we should not always believe everything we read or hear-even if it is a great story”? I think the statement is right. From a scientific standpoint, people should stick to the facts and the facts should be proved by experiments and research. A good story is fiction which is often more interesting than the truth. 2.What qualities do you think a great scientist should have? As a great scientist, he or she should have more than one good quality, such as being smart, honest, objective, persistent, curious, imaginative etc. Group workWork in groups.Explain your understanding of the saying “Seeing is believing”, and then give a talk about it.Your understanding of the sayingSupporting detailsAstheoldChinesesayinggoes,“Whatyouhearaboutmaybefalse,butwhatyouseeis true.” We often easily believe what we see or hear with doubt,but as a matter of fact, it is not always so convincing. New research suggests that the story of Franklins experiment may be fiction instead of fact.Some scientists questions the story about apple that fell on Newtons head and led him to come up with his theory of gravity. In fact, there is no proof that the apple hit him on the head. Personally, we can not be content with what we see or hear. As the old saying goes, “Practice is the sole criterion for testing truth.” What we see or hear is true or false remains to be seen in the future. Please dont hesitate to taste what you see or hear.SummarySummarySummarize what we have learnt today.Homework1. Review new words and phrases learn in this period. 2. Polish your report of the experiment.