Unit 4 Astronomy教案
东京审判影评-成功招聘网
Unit 4 Astronomy: the science of the stars
I. 单元教学目标
技能目标Skill Goals
Talk about
the science of the stars, the development of life
and space travel and
gravity.
Practise
giving instructions.
Practise talking abut
problems in study or life.
Learn to use Noun
Clauses as the subject.
Learn to write an
essay to show your problems and the way to
overcome them.
II. 目标语言
Talk about the
science of the stars, the development of life and
space travel
功
and gravity
能
句
式
Where do we come from?
How did the
universe begin?
Why is the universe the way it
was?
How will it end?
How much do you know
about universe?
Do you want to have a space
travel?
Do you know something about gravity?
Do you know something about black holes?
Practise giving instructions
Please look
at listen to...
Please check that...
You
need...
Please pay attention to...
Don’t
forget to...
You’d better...
Make sure
you...
Watch out for...
You
mustn’t...
Practice talking about problems in
study or life
My problem is...
The
difficulty is...
My trouble is...
The
question is...
My advice is...
What I
think about it is...
The fact is...
My
suggestion is...
词
汇
1 四会词汇
astronomy, system, religion
theory atom billion globe violent carbon
atmosphere unlike fundamental harmful acid
chain multiply oxygen exist
thus dioxide
puzzle biology biologist gravity satellite gentle
physicist climate
crash spaceship pull float
mass
2认读词汇
astronomer, biochemistry,
geophysics, solar, Big Bang, vapour, nitrogen,
dissolve, amphibian, reptile, generally,
mammal, global, comet, Issac
Newton, Albert
Einstein, Stephen Hawking, lessen, weightlessly,
cabin,
exhaust, exclaim
3 词组
solar
system, in time, lay eggs, give birth to, in one’s
turn, carbon dioxide,
prevent…from, block out,
cheer up, now that, break out, watch out
Noun Clauses as the subject
Noun Clauses
as the subject is also called the Subject Clause.
That means a
语法
Noun Clause serves as
Subject in the sentence. The words which are used
in
this Noun Clause are: that, whether, who,
what, which, when, where, how,
why, etc.
Example
1. What it was to become
was a mystery.
2. It was not clear whether the
solid shape was to last or not.
III. 教材分析与教材重组
1. 教材分析
本单元以astronomy: the science of the
stars, the development of life, space travel
and gravity为话题,通过本单元的几篇阅读材料使学生对以上问题有所了解,并
通
过文章中的一些探讨性的问题,比如,The earth may become too hot for
the lives
on it. Then what will our future be?
使学生更好地了解我们的地球和我们的生活
环境,并引发对“地球的将来如何”的热烈讨论,通过这些讨
论激发学生对天文学
了解和探究的强烈兴趣。通过讨论登月球需要的物品和可能遇到的困难学会提出问题和解决问题的表达方法,并能就此写出一篇表达合理思路清晰的短文。
1.1
WARMING UP以讨论的形式通过三组问题引导学生讨论边缘科学,讨
论科学的方法以及要成为真
正的科学家所必须掌握的技能。
1.2 PRE-READING 主要让学生弄清楚什么是科学思
想,什么是宗教信仰或
文化传统。在探讨生命起源的科学道理之前,让学生以听故事或讲故事的方式,<
br>交流有关宇宙的起源的种种传说,既有趣味性,又能调动学生的相关知识,激活
学生的思维。
1.3 READING 讲述了地球上生命的起源。水的形成使得地球有别于其他星
球,它
使得地球上生命的诞生成为可能。科学家认为,地球上的生命首先诞生于
水中,上百万年后,陆地上才长
出绿色植物,随后出现了陆栖动物和水陆两栖动
物。最初的动物靠孵化繁衍后代,后来出现了哺乳动物,
人类也随之诞生了。文
章最后讲了令人深省的问题:The earth may become
too hot for the lives on it.
1.4 COMPREHENDIN
G通过四个选择填空题检测学生对本文核心问题的理
解:地球上生命的起源和延续需要哪些条件?随后通
过排序的方式帮助学生弄清
本文的行文线索,也就是地球上生命的起源和发展历程。最后提出两个问题,
考
查学生的深层理解和推断能力。
1.5 LEARNING ABOUT
LANGUAGE分词汇和语法两部分。其中,
Discovering useful words
and expressions通过英文释意,短文填空,词语分类和
单项选择等练习让学生在语境中
掌握和运用词汇。Grammar采用先发现后应用的
学习方法。先通过到课文中找句子
,让学生认识主语从句,然后,设置一个用一
手机发短信息的情景,让学生进行简单句与主语从句之间的
转换练习。最后设置
情景来复习表语从句。
1.6 USING
LANGUAGE由Listening、Reading和Speaking and Writing三部<
br>分交互组合而成。指导学生在听和读的输入性学习之后,完成说和写的输出性应
用练习。List
ening的内容介绍三位科学巨匠。不仅通过听力填表的形式训练学生
捕捉细节的能力,还通过四选一
的方式帮助学生找主题思想。在解释对与错的过
程中,教师可以适当的介绍一下概括主题的方法。Rea
ding是一个科幻小故事,
通过作者和作者的朋友乘宇宙飞船登月球的经历,介绍了重量、失重和地球
引力
等科学道理。Speaking 以Visiting the moon为话题,要求学生讨论登
月球需要携
带的物品和在月球上可能遇到的困难。Writing要求学生找出登月球可能遇到的
三个困难并找出克服这些困难的方法。在听说读写综合提高的同时,培养了学生
的创新意识和实践能力
。
2. 教材重组
2.1 将 Warming up、Pre-
reading、Reading 和Comprehending四部分整合在一起
上一节阅读课。
2.2 将Leaning about language和 Workbook中的 Using
Words and expressions
以及 Using
Structures整合在一起上一节语法课。
2.3 听力Using language中的
Listening与 Workbook中 Listening和Listening
task三
部分话题较为接近,其中Listening部分是介绍三位对地球引力的认识做
出巨大贡献的科学伟人
。在提高听力的同时,为下文的Reading部分作了铺垫。
Workbook中 Listenin
g是关于轰动一时的航天英雄杨利伟的故事。通过听力练
习,让学生了解作为宇航员所需要哪些素质。而
Listening task中的听力则是向
学生展示space travel
的潜在价值。既然三部分都在谈论与Astronomy有关的内
容,所以放在一起处理比较合适。
2.4 把Using Language 中的Speaking 和 Workbook 中的
Talking 和
Speaking task放在一起整合成一节口语训练课。这几部分涉及到本
单元的功能
句,指导学生学会如何思考需要的东西,怎样给别人以指示以及如何向别人问问
题。
2.5 泛读 是把Using
language中的Reading和Workbook中的Reading task
整
合在一起。这两部分利用science fiction
story向读者解释gravity和black hole.
2.6 写作练习是把Using
language中的Writing 和Workbook中的Writing
Task
以及Project整合在一起上一堂写作练习课。
3.
课型设计与课时分配(经教材分析,本单元可以用6课时教完)
1st period
Intensive Reading
Language study
Listening
Extensive Reading
Speaking
Writing
2nd period
3rd period
4th period
5th period
6th period
IV. 分课时教案
The First Period Intensive
Reading
Teaching goals 教学目标
1. Target
language目标语言
重点词语:theory, atom, billion,
globe, violent, carbon, atmosphere, fundamental,
harmful, acid, multiply, oxygen, exist,
prevent, dioxide
2. Ability goals 能力目标
a.
Enable Ss to talk about the science of the stars,
the development of life and space
travel and
gravity.
Where do we come from?
How did
the universe begin?
Why is the universe the
way it was?
How will it end?
How much do
you know about universe?
Do you want to have a
space travel?
Do you know something about
gravity?
b. Understand the text and answer the
following questions:
What was there on the
earth before life could begin?
Why do
scientists think there has never been life on the
moon?
Why did animals first appear in
the seas?
Why did green plants help life to
develop?
Why were mammals different from other
animals?
c. Enable the Ss to understand the
details about the passage, choosing the correct
answer according to the text and put the order
of development of life into a time line
and
answer questions.
d. Retell the passage using
key sentences.
3. Learning ability goals 学能目标
Enable Ss to learn how to talk about the
beginning of life on the earth.
Teaching
important points教学重点
a. Talk about the
beginning of life on the earth.
Why did
animals first appear in the seas?
Why did
green plants help life to develop?
b. Discuss
the order of development of life.
Teaching
difficult points教学难点
a. Understand the
beginning of life on the earth.
b. Discuss the
questions:
What will our future be if the
earth may become too hot for the lives on it?
Why are humans the cleverest animals on the
earth?
Teaching methods教学方法
a. Skimming
and scanning.
b. Asking-and-answering activity
to check the Ss’ understanding of the text.
c.
Individual, pair or group work to finish each
task.
d. Discussion.
Teaching aids教具准备
A recorder, a computer and a projector.
Teaching procedures & ways教学过程与方式
Step I
Presentation
T: Hello, everyone! Today we’ll
come to Unit 4 Astronomy. Before that I have a
question: Where do we come from? Or we can
say: Who are our ancestors?
S1:
Monkeys!
S2: Beijing Ren who lived many years
ago.
S3: Reptiles.
S4: Mammals.
S5:
Amphibians.
S6: Dinosaurs.
T: Very good!
Can you put them in right order?
S7:
Amphibians, Reptiles, Dinosaurs, Mammals, Beijing
Ren.
T: Do you know what it was like before
life appeared on earth?
S8: It was full of
water, perhaps.
T: Before that, what was it
like?
S9: Sorry, I don’t know.
T: Do you
want to get more information? Today we’ll learn
something about How
Life Began on the Earth.
Turn to Page 25. Let’s come to Warming up first.
Step II Warming up
1. Read the three
questions, while the students listen and follow.
2. Give the Ss several minutes to discuss the
questions.
3. Collect answers from the whole
class.
4. Check the answers while discussing.
T: I’ll read the three questions for you. You
should listen to me carefully. (If students
don’t know how to discuss, show them an
example.) For example, medicine. When
someone
gets serious illness, he will go to the hospital.
The doctor will examine him.
He will take his
temperature, measure his blood pressure and give
him an X-ray, or a
CT. For the whole process
of the examination, what kind of science has been
used?
S1: Biology.
S2: Chemistry.
T:
So we can say medicine combines biology and
chemistry. What about biochemistry
and
geophysics?
S3: I think biochemistry combines
biology and chemistry.
S4: Geophysics combines
geology and physics.
T: What about
astronomy?
S5: Physics.
S6: Mathematics.
T: Very good. We should know that astronomy is
a multidisciplinary subject and if we
want to
do some research on it, we should know many
science subjects related to it.
Now discuss
the second question:
What do we mean when we
say we are studying a subject scientifically? Or
what’s the
correct attitude towards science?
S7: We should be objective, not superstitious.
T: What’s the correct way to prove a
scientific idea?
S8: We should design
experiments to test it for several times.
S9:
Then we can analyze the results and draw a
conclusion at last.
T: Let’s sum up the
answers. To study a subject scientifically, we
must try to be
objective. In order to test our
idea, we should design experiments, then analyze
the
results and draw a conclusion. Now let’s
talk about the third question.
What are the
most important skills we need to be real
scientists?
S10: We should be very careful.
S11: Be objective and logical.
S12: We
should be wise enough to design an experiment and
write the reports clearly.
S13: We should be
able to draw conclusions from the experiments and
not impose
conclusions on the data.
T: I
think you have done great work. From the
discussion we know that it’s not easy
to be a
scientist. So you should work harder if you want
to be a scientist.
Step Ⅲ Pre-reading
Get
the Ss to discuss the questions on Page 25 with
their partners. Then ask the Ss to
tell their
stories. Encourage the Ss to tell different
stories. If they don’t know any, tell
them
some.
T: Now please look at the slide show.
And discuss these questions with your partners.
Then I’ll ask some students to tell us their
stories. Are you clear?
Ss: Yes, SirMadam.
1. Do you know each religion or culture
has its own ideas about the beginning of the
universe? Please give an example if you know.
2. Do you know what a scientific idea is?
After the Ss’ discussion, teacher says the
following.
T: Now who’d like to tell us a
story? Volunteer!
S1: Let me try. In China, we
all know that Pangu separates the sky from the
earth.
T: Can you describe the story in
details?
S1: Sorry, I can’t remember clearly.
T: Who can? Nobody? Now I’ll tell you. Look at
the screen.
Pangu separates the sky from the
earth
The sky and the earth were at first one
blurred entity
like an egg. Pangu was born
into it. The separation of the sky and the earth
took
18,000 years- the Yang which was light
and pure rose to become the sky, and the Yin
which was heavy and murky sank to form the
earth. Between them was Pangu, who
went
through nine changes every day, his wisdom,
greater than that of the sky and his
ability
greater than that of the earth. Every day the sky
rose ten feet higher, the earth
became ten
feet thicker, and Pangu grew ten feet taller.
Another 18,000 years passed,
and there was an
extremely high sky, an extremely thick earth, and
an extremely tall
Pangu. Then came the Three
Emperors (the Emperor of the Sky, the Emperor of
the
Earth, and the Emperor of the Men.)
So these numbers came into existence and evolve
like this. The number begins
with one, becomes
established at three, is completed at five,
prospers at seven, and
ends in nine. So the
sky is ninety thousand li from the earth.
Other legends about the beginning of universe
The Biblical Account
“In the beginning
God created the heavens and the earth. The earth
was formless
and empty, darkness was over the
surface of the deep, and the spirit of God was
hovering over the waters. And God said....”
Day 1: God spoke and separated light from
darkness creating Day and Night
Day 2: God
spoke and separated the water creating sky and
ocean
Day 3: God spoke and created dry
land
Day 4: God spoke and created the sun,
moon and stars
Day 5: God spoke and created
living creatures in the air and sea
Day 6:
God spoke and created the land animals and man
Day 7: God rested and blessed this day calling
it Holy
India
Brahma has created the
world many times. This creation is repeated every
four
ages or yugas. There are four yugas in
one eon or kalpa. In the beginning of each
kalpa the world is a watery chaos.
As
Brahma thought beings were created. The demons
were created by a wind
from his rectum. After
creating the demons he discarded his body which
became night.
He assumed a new body and out of
his mouth came the shining gods or devas. This
body was also discarded and became day. With
his next body he created ancestor
spirits.
With his fourth body Brahma created human beings.
This discarded body
became the moon. With the
fifth body Brahma had a strange thought and he
created
ogres, terrible creatures that wanted
to devour the primordial sea of chaos. In shock at
what he had done he then created ghouls.
Finally he regained his senses and created
birds, mammals, plants and all the other life
that we see today.
Japan
In the
beginning the world was chaos until the heaven and
earth separated. When
this separation occurred
the Three High Deities created two principles, the
passive,
Izanami or the Female, and the
active, Izanagi or the Male. It was these two
people
who are our ancestors.
In the
beginning the heaven and the earth were one. The
In (Yin) and Yo (Yang)
had not been separated.
All that existed was chaos in the form of an egg.
This egg
contained the seeds of the creation.
Heaven, being made of the purer portion of the
substance rose and the earth being heavier did
not. As the heaven rose, the islands
began to
be formed. Later a strange plant grew between
heaven and earth which
became a great male
god. Two additional male gods followed. These
three were
formed by the will of heaven.
Following this six deifies were formed and then
Izanagi
(the male ) and Izanami (the
female ). Izanagi and Izanami were the first
ancestors.
They thrust down the jeweled spear
of heaven into the sea. As they lifted the spear
the
liquid on the tip formed the islands of
Japan.
Europe
Celtic
There were
giants in the past. These giants were the gods.
During the first winter
a large giant was made
from the hoarfrost. When this giant was exposed to
fire he
naturally melted. The body of this
giant became the world. His hair became the
forests.
His skull became the sky. His blood
produced the sea. His bones produced the
mountains. In the middle of the earth on high
mountains live the gods. South America
Inca
The Incas worshiped a god named Pachacamac,
also known as Viracocha. This
god had
originally risen from the water of Lake Titicaca
and created the stars, planets
and the moon.
Pachacamac created everything, including people,
out of clay. Because
he felt sorry for humans,
Pachacamac sent his daughter, the moon god, to
teach
humans how to build houses, grow crops
and make clothes. The children of
Pachacamac
lived at lake Titicaca but could travel. When they
traveled they were
required to stick into the
ground a golden rod they received from their
father,
Pachacamac. Each time this happened
the humans would build a city.
T: Are they
interesting? Though they are interesting, they are
only legends. We should
believe a scientific
idea. What’s a scientific idea?
S2: It should
be an idea coming from scientific theory.
T:
Quite right. Now we’ll come to Reading. That’s a
scientific idea.
Step Ⅳ Reading
Read the
passage carefully and analyse its structure. Write
down the main idea for
each paragraph.
Para.1: A widely accepted theory about the
formation of the universe
Para 2: The
formation of the earth
Para.3: The importance
of water for life
Para.4: The development of
plants and animals on the earth
Para.5:
The arrival of humans and their impact on the
earth
Reading and answer the questions.
1.
Why was the earth different from other planets?
The water remained.
2. Why was life
able to develop on the earth but not on other
planets?
The water stayed on the earth
but not on other planets.
3. Why was it
necessary for plants to grow before animals?
Plants provided oxygen for animals to breathe.
4. What problem is caused by human beings?
They cause global warming.
5. Why is
it wrong in films and stories to show dinosaurs
and people together?
Because dinosaurs
died out long before human beings developed on the
earth.
6. Why do you think that humans are the
cleverest animals on the earth?
They are
the cleverest animals because they have larger
brains than any other
creature on the earth so
far.
7. Why is it wrong in films and stories
to show dinosaurs and people together?
Because dinosaurs died out long before human
beings developed on the earth.
8. There used
to be nine planets in the solar system. Recently
scientists have decided
that one of them can
no longer be considered a planet. Do you know the
name of that
planet? Do you know why they
removed it?
Pluto. Scientists now think it
is too small to be called a planet.
Analyze
how life began on earth.
Listening
Listen
to the tape for the students to follow and have
further understanding of the
passage.
T:
Read after the tape, then answer me some questions
with your book closed.
Play the tape
T:
How did water come into being on the earth?
If
one student can’t answer completely, ask two or
three or more students.
Ss: The explosion of
the earth produced water vapor, which turned into
water when
the earth cooled down.
T: Why is water important on the earth?
Ss: Because water allowed the earth to
dissolve harmful gases into the oceans and
seas.
T: No.3, finish the following form.
Key to the exercise:
2. shellfish and all
sorts of fish ian(on land and in water)
7.
reptiles (on land) urs(on land) s(on land)
T: That’s all for this passage. Now let’s deal
with some language points.
Passage Analyzing
Chart of the text
How life began on the
earth
4 insects(on
land)
5 amphibians(on land and in
water)
6 forests
2 shellfish and all
sorts of fish
3 green plants on land
water
1 small plants in water
6 forests
7
8
9
3 green plants on land
4insects(on land)
5
1 small plants in
water
2
7 reptiles (on land)
8 dinosaurs (on land)
9 mammals (on land)
10. small clever animals
with hands and
feet
Text
Retelling
Retell the text using about 100
words.
Notes: Use the two questions and the
chart to retell the passage; the possible version
below can be used as a material for both
retelling and dictation.
Retelling:
The
explosion of the earth produced water vapour,
which turned into water when
11. human
the
earth cooled down. Water allowed the earth to
dissolve harmful gases into the
oceans and
seas. That made it possible for life to begin to
develop. The arrival of
small plants
encouraged the development of early shellfish and
all sorts of fish. Many
millions of years
later the first green plants began to appear on
land. Later land
animals appeared. Some were
insects. Others, call beginning with two questions
so as
to arouse the readers’ strong curiosity
and interest.
2) The passage tells the readers
the scientific idea in order of time. Water made
everything possible on the earth. Then all
kinds of plants and animals appeared. At
last
mankind rule the world, but they are not taking
care of the earth very well. So the
readers
will think about a question carefully: What will
our earth be in the future?
2. Writing Style
The text is common science writing, which
tells the readers how the universe
developed
and how life began on the earth. It provides a
scientific background to any
investigation
into space and it’s factual. It’s written in a
formal way. And all the
information is based
on scientific research.
3. Main Idea
Through the writer’s clear description, we
know that how life began on the earth. It’s
a
long and slow process. From the passage, we know
that earth is the best place for
human to live
on. But humans didn’t take good care of it in the
past. Now we are
facing many
environmental problems now. What should we human
do? Everyone who
reads the passage will think
about this problem. We should pay more attention
to
taking care of our earth. Taking good care
of the earth means taking good care of
ourselves.
Step Ⅵ Homework
Retell
the passage according to the form.
Remember
important language points.
Second period
Extensive reading
Read and then describe the
three ways in which gravity changed for Li Yanping
and how his weight changed.
1. The pull of
gravity became very strong she left the earth’s
atmosphere. His weight
is normal.
2. It
disappeared when he was in space. He is
weightless.
3. It was very light when he was
on the moon. He weighs less than on earth.
Explanation (略)见课件
Third period Grammar
What part does the
underlined part serve as in each sentence?
A tree has fallen across the road.
You are a student.
To find your way can
be a problem.
Smoking is bad for you.
“How do you do?” is a greeting.
What she said is not yet known.
That we
shall be late is certain.
It is certain
that we shall be late.
We can see from
these sentences that a sentence serves as subject,
so we call it
Subject Clause.
主语从句
(Noun Clauses as the Subject)
定义:
用作主语的从句叫主语从句,它是名词性从句之一。引导主语从句的连接词
有:连词that,
whether;连接代词who, what和which;连接副词when, where,
how
和why。
1) 由what等代词引起的主语从句:
What the teacher said today was quite right.
老师今天说的话是十分正确的。
2) 由连词that引起的主语从句:
That they are badly in need of help is
quite clear.
他们急需帮助,这是十分明显的。
但是这类句子在大多数情况下会放到整个句子的后部去,而用代词it作形式
主语。
3)
由连接代词或连接副词以及whether引起的主语从句。
Whether
they will sell the house is not yet decided.
他们是否卖掉这所房子还没有决定。
4) whatever,
whoever也可引导主语从句。
Whatever was said
here must be kept secret.
这里说的话都应当保密。
Whoever makes mistakes must correct
them.
凡犯了错误的人都必须改正。
注意:
上述例句中的主语从句都是放在句首, 但有时为了使句子结构平衡,
避免 “头重脚轻”, 常用
it 作形式主语, 而把从句放在后面。 例如:
It is a pity that
she has made such a mistake.
她犯了这样一个错误, 真是遗憾。
这样就构成了下面一些常用句型:
1) It
is + adj. n. + 从句
It is a pityshame
that... 遗憾的是……
It is possible that...
很可能……
It is unlikely that... 不可能……
2) It + 不及物动词 + 从句
It
seemsappears that... 似乎……
It happened
that... 碰巧……
3) It + be +过去分词+从句
It is said that... 据说……
It is known
to all that... 众所周知……
It is reported
that... 据报道……
It is believed that...
据信……; 人们相信……
It is suggested that... 有人建议……
It must be pointed out that... 必须指出……
It has been proved that... 已证明…….
如: It is believed that at least a score of
buildings were damaged or destroyed.
据信, 至少有二十座楼房遭到破坏或彻底毁掉。
4) 用于It is important
natural necessary impossible that...句型中,
主语从句
应使用虚拟语气, 谓语动词用“should + 动词原形”的形式,
should有时有感情色
彩。
The
fourth period Speaking
Speaking on page 31
What do you need if you travel to the moon?
Sample:
S1: Let’s think about what we
would need to protect our skin if we visited the
Moon.
S2: I’d take some skin cream. That works
very well when we go to the sea.
S3: Yes, but
it’s going to be much too hot to put cream on your
skin on the Moon.
S4: What’s more you get
direct heat from the sun. There are no clouds on
the Moon to
protect you.
S3: Oh dear, and
I also have to carry oxygen around with me
everywhere because
there’s no oxygen on the
Moon.
S2: Why don’t we carry the oxygen on our
backs in a tank?
S1: Good idea, but won’t that
hurt our skin?
S4: I think it will. Why don’t
we wear a spacesuit which has the possibility of
protecting your skin and helping you
carry the oxygen very easily?
S1: A very good
idea. We also need some sunglasses as the sun will
be as bad for our
eyes as for our skin.
S3: That’s right. The helmet of the suit can
have sunglasses you can use.
S2: How will the
suit protect our skin?
S4: It’s so hot there
so I suggest we design suit that can supply cold
water so the
wearer feels cool and hot water
to warm us if we feel cold.
S2: Great! So I
won’t need sun cream after all. That’s good!