1、 draft declaration experiment lightning fiction metal attach flash v. 起草，草拟起草，草拟 n. 声明，宣告声明，宣告 n. （科学）实验（科学）实验 n. 闪电闪电 n. 虚构的事，想象的事虚构的事，想象的事 n. 金属金属 v. 系，绑；贴系，绑；贴 n. 闪光闪光 conduct scientific entirely gravity account proof procedure v. 传导（热、电）传导（热、电） adj. 科学（上）的科学（上）的 adv. 完全地，彻底地完全地，彻底地 n. 重力，引力重力，引力
2、 n. 记述，描述记述，描述 n. 证明，证据证明，证据 n. 程序，步骤，手续程序，步骤，手续 Unit 3Unit 3 The world of scienceThe world of science P4 Developing ideasP4 Developing ideas Before reading Benjamin Franklin Benjamin Franklin (1706-1790) was one of the Founding Fathers of the United States and helped draft the Declaration of Indepe
3、ndence. 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. Read the short introduction to Benjamin Franklin. What do you know about him? Who is he? As a scientist, he was a major f
4、igure in the American Enlightenment and the history of physics for his discoveries and theories regarding electricity. As an inventor, he was known for the lightning rod, bifocals(双光眼镜双光眼镜), and the Franklin stove, among other inventions. He founded many civic organizations, including the Library Co
5、mpany, Philadelphias first fire department and the University of Pennsylvania. Game Time!Game Time! Facts Fiction VS 1. An egg can bear at least 10kg. 2. Watt invented the steam engine inspired by the jumping lid of a boiling kettle. 3. Cut an earthworm into two, and you can get two living earthworm
6、s. 4. Franklins kite-in-a-thunderstorm experiment Now read the essay and Now read the essay and check your predictioncheck your prediction. While reading Read and finish the tasks as quickly as possible. Read the passage and find out what Franklins experiment aimed to prove. Franklins experiment aim
7、ed to prove if lightning was really produced by electricity or something else. Task 1 P32 2 Experiment The kite lightning experiment Aim Material Procedure Conclusion Fill in the experiment report. To test if lightning was really produced by electricity. A kite with a string and a metal key First, F
8、ranklin flew a kite with a string and a metal key. Then, when a flash of lightning hit the kite, electricity was conducted through the string to the key. Finally, touching the key, Franklin got an electric shock. Lighting was a form of electricity. Task 2 Franklins spirit of scientific exploration i
9、s still considered an inspiration. People are amazed at and inspired by Franklins experiment. Scientists question what really happened in Franklins experiment. Number the statements to show how peoples attitudes towards Franklins experiment have changed. 2 1 3 Task 3 P34 3 Q1:Whats the meaning of“if
10、 Franklin had actually touched the key, he would certainly have died from the electric shock.” Q2: Thus how much is true in this experiment? He didnt touch the key. Flying the kite and the kite hit by a lightning may have happened, but Franklin didnt touch the key. Look through the passage and answe
11、r the question. Task 4 After reading The title contains a question being answered in the essay. Introduction What is the experiment? Peoples attitude have changed over years. Conclusion The answer of the question in titile The authors opinion Learn to analyze an essay. 1 1. He raised the kite with a
12、 piece of string tied to it. With a lot work to do, I have no time to work with you. We found the house easily with the little boy leading the way. With all the things she needed bought, she went home happily. with 复合结构复合结构： with+宾语宾语+宾补（宾补（adj./adv./介词短语介词短语/-ing/- ed/to do） with 宾语宾语 宾语补足语宾语补足语 他放
13、飞了一个风筝他放飞了一个风筝, ,上面系着上面系着一条线。一条线。 Sentence analyzing for better understanding 2 2. Franklin, along with many other scientists, has inspired us and taught us that scientific experiments are important in order to establish the truth and to contribute towards later scientific discoveries and inventions
14、. 宾语从句宾语从句 along with Jim, along with his classmates, has seen the film. 吉姆吉姆和和他的同学他的同学一起一起看了这部电影。看了这部电影。 My father, along with I, is a base-ball fan. 我的父亲我的父亲和和我我一样一样也是个棒球迷。也是个棒球迷。 当连接两个主语时，当连接两个主语时， 谓语动词单复数应谓语动词单复数应 与与前面主语一致。前面主语一致。 和和一起一起 富兰克林和许多其他科学家一起启发并告富兰克林和许多其他科学家一起启发并告 诉我们，科学实验对于确立真理和为后来诉我们
15、，科学实验对于确立真理和为后来 的科学发现和发明做出贡献是很重要的。的科学发现和发明做出贡献是很重要的。 插入语插入语 3. But scientists all agree that if Franklin had actually touched the key, he would certainly have died from the electric shock. If 引导虚拟条件状语从句引导虚拟条件状语从句，与过去事实相反，与过去事实相反， 从句用从句用过去完成时过去完成时，主句用主句用would/could/might/ should have done. If you (fo
16、llow)my advice yesterday, you would not (make) such a mistake. had followed have made 宾语从句宾语从句 但是科学家们一致认为如果富兰克林真的碰但是科学家们一致认为如果富兰克林真的碰 到钥匙的话，他一定会死于触电。到钥匙的话，他一定会死于触电。 1. 我在房间坐了一会儿，眼睛盯着天花板。我在房间坐了一会儿，眼睛盯着天花板。 I sat in my room for a few minutes with my eyes fixed on the ceiling. 2. 假如他昨天来这儿的话，就会看见他的假如他昨天
17、来这儿的话，就会看见他的 老朋友。老朋友。 If he had come here yesterday, he would have seen his old friend. Franklins experiment: How much is true? what peoples attitude procedures aim conclusion material amazed &inspired inspired doubtful Critical thinking 3 Retell the essay with the help of graphic organizer. Make no
18、tes about your understanding of the saying and list supporting details. Work in group. Explain your understanding of the saying “Seeing is believing”, and then give a talk about it. You may use information in the passage as examples. P34 4 Organize your talk Start : Why you think this way： Ending: F
19、irstly, Secondly, Thirdly, / Another problem is that In my opinion / In my view/ As far as I am concerned, I believe Explaining how you understand this saying. 2 3 Give your talk to the class. Think and Share 1. Do you think it matters that Franklins experiment might not be true? Why? 2. What is you
20、r opinion about the statement “ we should not always believe everything we read or hear-even if it is a great story”? 3. What qualities do you think a great scientist should have? 4. In what ways do scientists contribute to society? 1. No. Although it might not be true, we are still inspired by his
21、spirit of scientific exploration. Yes. In science, facts should be more important than fiction. 2. We should be critical about everything we read or hear. 3. I think a great scientist should be brave, creative, and imaginative. 4. They devote themselves to scientific exploration. Possible answers Gr
22、oup Work How did you feel when you know that Franklins experiment as well as Newtons apple may not be true? Its easy to read, but its hard to think, but without one, its useless. Benjamin Franklin Developing ideas writing Writing an experiment report 1. What do you think the results of this experime
23、nt will be? 2. What can you learn from this experiment? Read the instructions for the experiment and answer the questions. 1. The egg may fall into the bottle. 2. When the bottle was heated, the air pressure outside is greater than inside. Possible answers Complete the boxes with the information in
24、Activity 5. Do futher research if necessary. to test if the egg will fall into the bottle. a boiled egg, a glass bottle(bottleneck a bit smaller than the egg) and hot water 1. Remove the shell of the egg. 2. Carefully pour some hot water into the bottle. 3. Shake the bottle gently. 4. Pour out the h
25、ot water. 5. Quickly put the egg on top of the bottle. when the bottle is heated, the air pressure outside is greater than inside, which pushes the egg into the bottle. This experiment is designed to test if the egg will fall into the bottle. I prepared a boiled egg, a glass bottle (bottleneck a bit
26、 smaller than the egg) and hot water to do this experiment. Then I began my experiment. Firstly, I removed the shell of the egg. Secondly, I poured some hot water into the bottle carefully and shook the bottle gently. Then I poured out the hot water and put the egg on top of the bottle quickly. Afte
27、r a few seconds, the egg fell into the bottle. To get the best results, the procedures should be under the instructions of a teacher. After this experiment, I draw the conclusion that when the bottle is heated, the air pressure outside is greater than inside, which pushes the egg into the bottle. Sh
28、are your report with the class. One possible answer Introduction Main body Conclusion Now 2 mins to test our spelling. 1. English-Chinese generation fiction string conduct scientific gravity admittedly 2. Chinese- English 著名的著名的 系，绑；贴系，绑；贴 传导（热、电）传导（热、电） 激发，鼓励激发，鼓励 建立建立 描述描述 证明证明 When finishing, exc
29、hange to see who does the best. 课时重点回顾课时重点回顾 1.1.在那个时候在那个时候 2.2.一种电的形式一种电的形式 3.3.不止一个不止一个 4.4.对对感到惊讶感到惊讶 5.5.寻找寻找 6.6.和和一起一起 7.7.发生发生 8.8.死于死于 9.9.想出，提出想出，提出 at that time a form of electricity more than one be amazed by look for along with take place die from come up with SelfSelf- -evaluationevalua
30、tion 1. Can you describe what Franklins experiment was? 2. How did peoples attitudes towards Franklins experiment change? 3. Whats your opinion on facts and fiction? 4. Can you do an experiment and write a report? Homework How do you deal with what you read and hear? Write an essay to express your opinions.
