Unit 3 Developing Ideas学案高中英语外研版（2019）必修第三册.docx

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1、Unit 3 The world of scienceDeveloping ideas【学习目标】1. Understand the main idea of the passage and get some detailed information.2. Get the features of argumentation and find out the structure of the passage.3. Have the ability of writing a report of the experiment according to the instructions for the

2、 experiment given.预习案【学习过程】Step 1: 自主学习To get some information about Benjamin Franklin on the Internet探究案【合作探究】Step 1 Warming up (6 minutes)Home work checking Fill in the blanks with the given words in the proper form.1.The bridge _(build) last year. 2.Great changes _(take) place in my hometown. 3.S

3、o far, many villages _(visit).4.The party _ _ _(plan) since the New Year. 5.With the help of high technology, more and more new substances _(find) in the past few years.6Paper money _ (use) for over a thousand years. 7Great changes have taken place in my hometown and a lot of factories _(set) up. 8T

4、his book _(translate) into many languages up to now.9The fire has got to the fifth floor.I wonder whether all the people _(save)10We want to sit at the table near the window. Im sorry，but it _(take)already.Step 2 Background information (4 minutes)Benjamin Franklin (17061790) was one of the Founding

5、Fathers of the United States and helped draft the Declaration of Independence. Apart from being a successful statesman, he was also well known as a leading American author, printer and publisher, successful diplomat, creative scientist and inventor.Fill in the formHighlights in the life of Benjamin

6、Franklin1._2._3._4._5._6._7._8._Step 3 Fast reading Activity 2 (5 minutes)Read the passage and find the answer to the following questions1. what Franklins experiment aimed to prove.2. What does the new study say about the story of Franklins experiment?3. Why does the author mention the story about t

7、he apple falling on Newtons head in the text?Activity 3 (5 minutes)1.Number the statements to show how peoples attitudes towards Franklins experiment have changed.a).Franklins spirit of scientific exploration is still considered an inspiration._b).People are amazed at and inspired by Franklins exper

8、iment._c).Scientists question what really happened in Franklins experiment._Step 4 careful reading (5 minutes)2. Read the text again and match the main ideas with the paragraph(s).1Paragraphs 1 A.The effect of the experiment.2Paragraphs 2 B.The introduction to Franklins famous experiment. 3Paragraph

9、s 3 C.Are the stories of Franklins and Newtons true? 4Paragraphs 46 D.How the experiment is carried out. Step 5 Think and share (8 minutes)Passage StructureFranklins experiment (Paragraph 1&2) The effect (Paragraph 3 ) Critical thinking(Are the stories of Franklins and Newtons true?) Raise a questio

10、n Analyse the question The solutionAnd try answering the two questions:1.How do you understand the statement “.we should not always believe everything we read or hear even if it is a great story”?2.What qualities do you think a great scientist should have?Step 6 Post reading Activity 4 Work in group

11、s. (12 minutes)Have the students give a talk about their understanding of the saying “Seeing is believing.”The students complete the exercise step by step under the guidance of Activity 4. a)Your understanding:b)Supporting detailsc)From the passage we can learn.Step 7 Home workBenjamin Franklin was

12、one of the Founding Fathers of the United States.Apart 1._ being a successful statements,he was also a 2._(create) scientist an inventor.Benjamin Franklin 3._(fly)a kite during a storm in 1752.he raised the kite with a piece of sting 4._(tire) to it.A metal key was attached ti the sting.A flash of l

13、ighting hit the kite,and electricity was conducted through the sting to the key.Franklin then touched the key and got 5._ electric shock.Generations of schoolchildren have been amazed by his 6._(brave)and scientific approach to 7._(look)for the truth.However,new research suggests that the story may

14、be fiction instead of a fact.More than one scientist has questioned 8._ really happened.They all agreed that if Franklin had 9._(actual) touched the key,he would certainly have died from electric shock.In science,facts should 10._(prove) by experiments and research,and we should not always believe e

15、verything we read or hear- even if it is a great story.【参考答案】Step 1 home work checkingThe key:1.was built 2.have taken 3.have been visited 4.has been planned 5.have been found. 6.has been used 7.have been set 8.has been translated 9.have been saved 10.has been takenStep 2 Background informationThe k

16、ey:1.One of the Founding Fathers of the US 2.A successful statesman 3.A leading American author 4.A printer 5.A publisher 6.A successful diplomat 7.A creative scientist 8An inventorStep 3 Fast reading Activity 2 The key:1.Franklins experiment aimed to prove that lightning was a form of electricity.2

17、.His experiment aimed to test if lightning was really produced by electricity or something else.3. New research suggests that the story may be fiction instead of fact.Activity 3The key:a) 3 b) 1 c) 2Step 4 careful readingThe key:1Paragraphs 1 A.The effect of the experiment.2Paragraphs 2 B.The introd

18、uction to Franklins famous experiment. 3Paragraphs 3 C.Are the stories of Franklins and Newtons true? 4Paragraphs 46 D.How the experiment is carried out. Step 5 Think and shareThe key:1. I think the statement is right. From ascientificstandpoint, people should sticktothe facts and the facts should b

19、e proved by experiments and research. A good story is fiction which is often more interesting than the truth.2.As a great scientist, he or she should have more than one good quality, such as being smart, honest, objective, persistent, curious, imaginative.Step 6 Post reading The key:a) As the old Ch

20、inese saying goes, “What you hear may be false, but whatyou see is true.” We often easily believe in what we see or hear with doubt, but as a matter of fact, it is not always so convincing.b)1. New research suggests that the story of Franklins experiment may be fiction instead of fact.2. Some scient

21、ists questions the story about an 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.c)Some parts of the stories are true, and some are not, because they dont follow the common sense. However, the scientist

22、s spirit of scientific exploration is what mostly matters.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.Step 7 Home workThe key:1.from 2.creative 3.flew 4.tired 5.an 6.bravery 7.looking 8.what 9.actually 10.be proved