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一. 说教材(Textbook)
在人教版高一英语的下册的Unit 19，曾经谈论过一些关于农业的话题，学生对中国早期的出名的农业家贾思勰有了一定的了解。人教版高三英语的Unit 4这个单元以Green World 为话题，让学生初步了解一些植物学方面的内容，如植物的分类、栽培以及植物学的发展的历程等等;语言技能和很多的语言点几乎都是围绕介绍绿色世界这一中心话题而展开的。要求学生能够运用所学的内容对相关话题进行流利的表述。
在READING部分，介绍了植物学正式成为一门科学的历史形成过程。重点介绍了两个为植物学发展做出过卓越贡献的重要人物林厄尼斯与班克斯。他们以独特的归类的方式对植物进行分类，从而征服了整个世界。
在POST-READING 部分，针对READING部分的相关内容设计了5个练习。第1个练习以选择填空的形式考查学生对课文细节内容的了解。第2-5小题以问句的形式进一步考查学生对课文重点内容的了解。
二.说教学目标(Teaching goals)
1.让学生了解植物这一学科的形成，并了解一个学科的形成需要经过漫长的时间及几代的科学家的努力和奋斗。
2.使学生了解科学家为科学事业所作的努力及其奋斗精神。
3.培养学生查找细节，分析主题从而提高学生的阅读理解能力。
4.学习一些有用的词汇和短语。
5.加深对阅读技巧(Scanning and skimming method)的理解及运用。
1. Target language语言目标
1).Learn some important words and phrases(学习一些有用的词汇和短语)
merely, classify, identification, male, promote, botanical, privilege, cosy, wealth, expense reward, appetite output,
accumulate, abandon, distinguish, appoint, calculate , astronomy, enterprise, settlement, abandon, on a large
scale, look out for2). Learn some important sentences(学习一些重要句子)
A. Attempts had been made by others to classify plant species into groups, but the breakthrough came with the
work of Carl Linnaeus. P30
B. In 1768, the Royal Navy appointed James Cook as the commander of the Endeavor to take members of the
Royal Society on an expedition to Tahiti. P31
C. He also looked out for new economic species: plants that could be grown in England or other parts of the
world to produce crops that could be sold. P31
D. Banks was the first to move crops from one continent to another on a large scale, helping to develop local
economies with these new imports. P31
2. Ability goals 能力目标
Enable students to talk about “Botany” and say something about the development history of botany. Help
the students to know the contribution of the three important persons to the science of botany. Try to improve
the reading ability of the students.三. Teaching important and difficult points说教学重点及教学难点
Help students to understand the whole passage. Help students to know how to use some key words and
understand the meaning of some difficult sentences.
四.说教学方法和学法指导Teaching methods and study guide
在本单元的Reading当中,文章比较长,有很多有的新单词,个别的句子非常难理解,学生在阅读当中一定会遇到一定的困难。因此，我采用了一些灵活的实用的教学方法(如Scanning and skimming method和Task-based method)，帮助学生理解文章的内容，努力提高阅读课的教学效果。具体做法如下：
解读标题 The Birth of a Science. 这能帮助学生快速了解文章的内容。对提高阅读效果有很大的帮助。 老师可向学生设问：What is Botany?让学生思考并回答。
通读课文，了解细节。老师可向学生提出问题：How many people are mentioned in the passage? 让学生快速阅读并寻找此问题的答案。
深层了解,归纳课文大意。What is the main idea of the passage? 让学生归纳文章的大意，从而帮助学生理解整篇文章的内容。
升华主题。What can we learn from the passage? 让学生能联系实际，学有所获。
让学生进行分组(Pair work/ Group work)的讨论(Discussion)，加深学生对课文的理解，进一步调动学生学习的积极性。
五.说教具准备Teaching aids
A recorder, a notebook computer and a projector.
六.说教学过程Teaching procedures
Step 1.Presentation
Step 2 Fast reading
Step 3 Listening
Step 4 Exercises
Step 5 Post reading
Step 6 Language points
Step 7 Homework
Step 1.Presentation
What is Botany? Science of studying plants is called Botany
Step 2 Fast reading (Reading material):
A. Pre-reading questions:
B. Fast-reading questions:( 3minutes)
§主旨大意■ The text“The Birth of a Science”mainly tells us _________ .A.the importance of botanyB.how to classify plant species into groupsC.the history and development of botanyD.Linnaeus’discoveries about different species
§推理判断●Captain Cook made ________voyages altogether around the world.A.one B.two C.three D. four
C .Intensive-reading questions: (5-10minutes)( ppt. is better for students to understand)
What were the goals of James Cook’s first voyage around the world?
Key: three goals: the first goal was to observe the planet Venus when it passed across the sun. This would
get theastronomers to have a chance to work out the distance between the earth and the sun. The second
goal was to record, classify and describe all plants and animal life observed during the trip. The third goal
was that Captain Cook was given secret instructions to search for an unknown southern continents.
Step 3 Listening
How many people are mentioned in the passage? Who were they?
Carl Linnaeus
Daniel Solander
Joseph Banks
Captain Cook
Step 4 Exercises
1.Before Linnaeus, botany was ________.A.studied by doctors B.unknown to anyoneC.fully developed D.a branch of medicine
2. Some economic species plants such as____could help to develop local economies.A.rose and peony B.tea and appleC.cocoa and hemp D.Cocoa and lemon
3. It was ____ who made Kew(地方名) a centre of scientific and economic research.A.Joseph Banks B.Captain CookC.Linnaeus D. Daniel Solander
4.Paragraph one of the text mainly tells us ___ .A.the importance of botany B.how to classify plant species into groupsC.Linnaeus’ contribution to botany D.Linnaeus’ discoveries about different species
5.Captain Cook made ___voyages altogether around the world.A.one B.two C.three D.four
Step 5 Post reading
1.Why was Karl Linnaeus important to the history of botany as a science?
Because his idea of grouping plants in families was ______. The identification of different species was based
on the arrangement of the female and male organs in the flowers.
2.How did scientists classify plants before Linnaeus?
They classified plants into _____ and herds according to the shape of the _____ and whether they had flowers
or not.
3 What were the goals of James Cook’s first voyage around the world?
There are _____. First ,it was to study the passing of the planet Venus. Second,it was to record and classify
all plant and animal life. Third, it was to search for unknown southern land.
4 Why did Banks have to supply his own money to equip part of the expedition?
Because the __________ would not pay for all the equipment and expenses.