四Module 4 Great Scientists

Module 4Great Scientists【美文阅读】What makes a person a scientist? Does he have ways or tools oflearning that are different from those of others? The answer is“no”．It isn't thetools a scientist uses but how he uses these tools that make him a scientist.Youwill probably agree that knowing how to use a power is important to acarpenter.You will probably agree，too，that knowing how to investigate，how todiscover information，is important to everyone.The scientist，however，goes onestep further；he must be sure that he has a reasonable answer to his question andthat his answers he gets to many questions are into a large set of ideas abouthow the world works.The scientist's knowledge must be exact.There's no room for half right orright just half the time.He must be as nearly right as the conditions permit.What works under one set of conditions at one time must work under the same conditions at other times.If the conditions are different，any changes the scientist observes in a demonstration must be explained by the changes in the conditions.This is one reason why investigations are important in science.Albert Einstein，who developed the Theory of Relativity，arrived at this theory through mathematics.The accuracy of his mathematics was later tested through investigation.Einstein's ideas were proved to be correct.A scientist uses many tools for measurements.Then the measurements are used to make mathematical calculations that may test his investigations.【诱思导学】Can you list some great scientists? What can you learn from her or him?【答案】略Period ⅠPreviewing(教师用书独具)●教学目标本课时主要是通过学生对学案所给出的内容的学习，了解本课文中所出现的词汇，初步了解课文以及相关的背景知识，对下一堂课对课文的全面理解起到一个铺垫作用。

●教学地位该部分包括三个活动，主要任务是学习词汇。

作用有两点：(1)通过图片、学科名称等内容的呈现，引出本模块的中心话题——伟大的科学家；(2)通过词汇、句子层面的练习为本话题的学习做语言铺垫。

这一部分是整个模块学习的热身活动。

(教师用书独具)●新课导入建议根据课本上的插图(四位科学家)，或者提供更多的插图，提问并回答以下问题。

然后导入新课。

1)What's his/her name?2) What did he/she invent or discover?3) When did he/she invent or discover it?●教学流程设计导入新课。

⇒学生阅读“美文阅读”与“诱思导学”(见学案第45页)。

⇒学生就“美文阅读”进行讨论，统一答案。

⇓学生再次阅读课文(见课本第32页)并完成“语篇理解”(见学案第46页)。

⇐师生共同讨论并统一答案。

⇐让学生快速阅读课文(见课本第32页)，并完成“篇章结构”(见学案第45页)。

⇓学生共同讨论，并让学生发表各自见解，最后统一答案。

⇒学生再次仔细阅读课文(见课本第32页)进行深度理解，并完成“课文缩写”(见学案第46页)。

⇒老师指导学生讨论，共同找出答案。

⇓让学生根据所给出的表格进行自我评估(见学案第47页)。

⇐学生讨论，并让学生代表发表他们讨论得出的答案。

老师予以更正。

⇐让学生完成“知识初探”部分(见学案第46页)。

⇓错误!Ⅰ.篇章结构阅读文章，完成下面表格(每空不超过3个词)Yuan Longping: a(n)1. in the rice-growing world.2. a boy He studied in many schools and liked askingquestions.From an early age He was interested in 3. .In college He studied 4. .As a young teacherHe began experiments in crop 5. .He thought that the only way to produce more rice more quickly is by crossing different 6.of rice plant.In 1966 The results of his experiments were7.in China.In 1970 He discovered a naturally sterile male rice plant，which was a 8. .In the 1990'sBecause of his discoveries，Chinese rice production rose by 47.5 percent.50 thousand square kilometres of rice fields were 9. to growing vegetables and other cash crops.In the following years His rice was 10. to other countries. 【答案】 1.leading figure 2.As 3.plants 4.agriculture5．breeding 6.species7.published8.breakthrough9.converted10.exportedⅡ.语篇理解阅读P32的Reading and V ocabulary部分，从每题所给的3个选项中选出最佳答案1．Why was Yuan given the nickname“the student who asks questions”？A．Because he was stupid.B．Because he did not learn well in the class.C．Because he was curious about the lessons and wanted to learn more.2．When did he begin experiments in crop breeding?A．When he was in college.B．When he was a young teacher.C．When he was supported by the government.3．How could he manage to produce more rice quickly?A．By crossing different species of rice plant.B．By planting more rice.C．By bringing in rice from other countries.4．Which reason is NOT true for Yuan's success?A．Researchers were brought in from all over China to help him.B．He was supported by the government.C．He wanted to get more money from the experiments.5．What is the advantage of Yuan's discovery?A．Chinese rice production rose by 45.7 percent.B．Many rice fields were converted to growing vegetables and other cash crops.C．Both A and B.【答案】1－5CBACBⅢ.课文缩写用所给单词或短语的正确形式完成课文缩写nickname；convert；figure；bring up；by；as a result；sterile；breakthrough；experiment；cash cropsYuan Longping is a leading 1. in the rice-growing world.He was born and 2. in China.When he was at school，he was interested in plants and was given the 3. “the student who asks questions”．As a young teacher，he began 4. in crop breeding.He thought there was only one way to have more rice quickly.That was to cross different species of rice plant.Then he began his search for a special type of rice plant.It had to be male and5. .When the naturally sterile male rice plant was discovered in 1970，it was a6. .7. ，China's rice production rose8. 47.5% in the 1990's.And 50 thousand square kilometres of rice fields were 9. to growing vegetables and other 10. .【答案】 1.figure 2.brought up 3.nickname 4.experiments 5.sterile 6.breakthrough 7.As a result8.by9.converted10.cash cropsⅠ.词义搭配1．leading A．existing or happening first，beforeother people or things 2．figure B．change(sth.)from one form or useto another3．original C．the business of selling andsending goods to other countries 4．breakthrough D．how good or bad something is 5．support E．to start doing something instead ofanother person，or start being usedinstead of another thing6．convert F．an amount of something that can becounted or measured7．export G．most important；chief8．replace H．an important new discovery insomething you are studying，especiallyone made after trying for a long time 9．quantity I．help sb./sth. by one's approval orsympathy or by giving money 10．quality J．someone who is important or famousin some way【答案】 1.G 2.J 3.A 4.H 5.I 6.B7.C8.E9．F10.DⅡ.短语填空bring up；make a breakthrough；as a result of；bring in；the key to1．the fire，thousands of people lost their homes.2．He in the country，so he was not used to the city life.3．learning English well is to practice a lot.4．After thousands of experiments，the researchers finally a big .5．We need to a lot more new business.【答案】 1.As a result of 2.was brought up 3.The key to 4.made；breakthrough 5.bring inⅢ.句型背诵1．As a boy he was educated in many schools and was given the nickname，“the student who asks questions”．小时候，他在许多学校读过书，得了个“问问题的学生”的绰号。