外研版英语Book I Module 5 A Lesson in a Lab Introduction 教学设计

Module
5
Book
I
A
Lesson
in
a
Lab
一、课程分析
1、学习内容：
Period
I
(Introduction：引入话题，复习、学习数字和比较级)
本模块主要围绕话题
Science
Subjects
and
Experiments来设计教学内容。为了能让学生学习、完成实验报告，本模块首先在数字和比较级两个方面进行复习、学习，然后呈现给学生一篇小科技文章，这篇小文章既引入了部分金属名词词汇，又为学生进一步学习完成实验报告做好铺垫。
本节课是Period
I,
Introduction部分，即：引入话题，复习、学习数字和比较级，为学生使用科学描述性的语言，进一步学习完成实验报告打基础、做准备。
2、学习重点：
（1）学习话题：a
report
on
a
simple
scientific
experiment
（2）复习、学习数字的读法及在语言中表示的数量关系
（3）复习、学习比较级;
在语言中表示的程度比较、倍数关系、同级比较
3、学习难点：
本模块内容与实验有关，其中涉及到一系列金属元素符号的英文写法，在学习过程中会对学生理解文章内容造成直接影响，
因为本节课是本模块的第一节课，必须引导学生迅速进入“scientific
experiment”的语境，所以我们应该充分利用学生的好奇心、挑战欲，引导学生感知、体会英语中“生活语言”
、“文学语言”
与“科技语言”的不同。这也是学生本节课语言学习过程中的难点所在。
二、学情分析
对象是高一学生，他们处于十六、七岁的青少年时期，是向成年转化的特殊时期，也是人生观初步形成的时期，有很强的合作和参与意识。学生希望在课堂学习中通过与别人的合作来展示自己各个方面的能力，因此教师要根据学生成长阶段的特点培养其良好的学习情商。他们经过初中四年英语的学习，储备了一定量的词汇和英语知识。就本模块来讲，实验是学生生活中非常重要的一部分，学会用英语描绘实验生活是学生所渴望学到的，因此老师要增强学生求知欲，提高语言运用能力，应该结合学生的实际情况，用多种手段激发学生兴趣，使不同层次、不同水平的学生都能参与到课堂教学中来，让学生成为课堂主体，真正做到以学生为本。
三、设计理念
1、加强学生
“探究、合作精神”的培养
新课程标准在情感态度七级目标中明确指出：“学生在学习中要有较强的合作精神，愿意与他人分享各种学习资源”。这一节课主要是复习旧知识，难以提高学生的兴趣。所以，主要通过多媒体和小组活动来进行课堂教学。在分工合作的过程中各个成员为解决同一个问题来相互讨论、寻找答案。通过合作，各成员可以取长补短，互相帮助，最终完成共同的目标，这一过程能够使学生的合作精神得到很好的培养。
2、运用现代多媒体技术进行教学
新课程标准强调：“教师要开发并合理利用以现代信息技术为载体的英语教学资源，实现现代信息技术与英语教学的整合。”
四、学习目标
1、语言知识目标：
学习并掌握数词和形容词比较级结构及用法。
2、语言技能目标：
（1）通过小组分工的方式让学生用英语对问题进行讨论并对答案进行系统、条理地归纳总结，以锻炼学生英语的口语表达能力。
（2）在理解语言情景的基础上，运用所学知识准确地利用数字，准确比较。
3、情感目标：
让学生在分组合作中完成讨论问题、总结答案的任务，从而培养学生的团队协作意识，以增强学生集体合作的能力。
五、教学流程：
１.
课前准备：
屏幕呈现，小测验，小游戏：测测你的科学认知指数
Choose
the
correct
answers
to
the
quiz.
How
much
do
you
know
about
general
science
①.
(a)Water
exists
as
a
solid，a
liquid
and
a
gas.
(b)
Water
exists
as
a
solid
and
a
liquid
only.
②.
(a)
When
you
heat
a
metal,
it
expands.
(b)
When
you
heat
a
metal,
it
contracts.
③.
(a)
Steel
is
a
mixture
of
iron
and
other
substances．
(b)
Steel
is
a
mixture
of
iron
and
oxygen.
④.
(a)
Two
thirds
of
the
earth’s
surface
is
water.
(b)
50％of
the
earth’s
surface
is
water.
⑤.
(a)
The
distance
of
the
sun
from
the
earth
is
25,500
kilometres.
(b)
The
distance
of
the
sun
from
the
earth
is
1
50,500,500
kilometres.
⑥.
(a)
The
earth
is
4.6
million
years
old.
(b)
The
earth
is
4.6
billion
years
old.
⑦.
(a)
The
earth
is
twice
as
1arge
as
the
moon.
(b)
The
earth
is
forty-nine
times
larger
than
the
moon.
2.　新课导入
I.
Put
these
words
in
pairs
or
groups.
air
contract
earth
gas
liquid
oxygen
moon
solid
sun
expand
Example:
air-oxygen
contract-expand
II.
Answer
these
questions:
1).
Which
of
the
following
are
natural
2).
Which
are
man-made
3).
Which
can
be
both
electricity
iron
metal
steel
air
glass
点评：通过屏幕呈现，利用小测验，也是小游戏的形式，测测学生的科学认知指数，既能引导学生迅速进入本模块的话题语境，又顺利地完成了课本上的教学任务，同时为下一步的复习学习做好了铺垫。
3.
主要学习内容和过程：
（一）数字的复习与学习：
屏幕呈现下面的表格，学生同桌讨论这些数字的读法，同时完成所规定的任务。
Fill
in
the
blanks.
基数词
one
two
three
five
eight
nine
twelve
twenty
twenty-one
序数词
分数
one-fourth
2/3
小数
zero
point
five
1.35
百分数
sixty-two
percent
80%
代分数
Thirty
and
seven
eighths
2
3/5
数字
读作
223
1001
9,743
275,301
750,000,000
1,000,000,000,000
点评：本模块Vocabulary部分涉及到序数词、小数、百分数的有关知识，虽然在初中阶段有过基本了解，但在开始本模块的学习前对数字知识有必要进行总结学习，通过序数词、分数、百分数表格转换，为学生进一步掌握数字知识，在语言中自如地读懂、应用有关数字的信息做好准备。
（二）比较级的复习与学习：
1.屏幕呈现：
Look
at
the
sentence
from
Introduction
activity
1.
The
earth
is
forty-nine
times
larger
than
the
moon.
Or
we
can
say:
The
earth
is
fifty
times
as
large
as
the
moon.
Now
answer
the
questions.
1)
What
is
wrong
with
this
sentence
I
went
there
two
times.
2)
If
object
A
is
10
metres
long,
and
object
B
is
twice
as
long
as
A,
how
long
is
object
B
3)
If
object
A
weighs
100
kilogrammes,
and
object
B
is
four
times
heavier,
how
heavy
is
object
B
点评：通过这两个小练习简单思考、讲授，引导学生理解倍数比较的表述和应用。
2.
屏幕呈现：
Make
sentences
about
the
comparative
sizes
of
the
pairs．Use
the
words
in
the
brackets．
I
think
the
Yangtze
River
is
about
3
times
as
long
as
the
Songhua
River．
Or
we
can
say：
I
think
the
Yangtze
River
is
about
three
times
longer
than
the
Songhua
River．
1).
Songhua
River:
2,309
kilometres
Yangtze
River:
6,300
kilometres
(long)
2).
winter
in
Beijing:
-5℃
winter
in
Harbin:
20℃
(cold)
3).Mount
Tai:
1,521metres
Mount
Qomolangma:
8,844
metres
(high)
4).my
house:
80
square
metres
my
aunt’s
house:
80
square
metres
(large)
5).
Lily
weighs
45kilograms
Tom
weighs
45kilograms
(heavy)
点评:
通过这一练习，让学生仿照上面的例句，进一步理解倍数比较的表述和应用。
3.
屏幕呈现：
Look
at
these
sentences.
Answer
the
questions
below.
1）It’s
getting
brighter
and
brighter！
2）The
closer
you
are,
the
more
you’ll
see.
3）The
more
books
I
read,
the
more
information
I
learn.
4)
You
are
growing
taller
and
taller.
5)
Our
country
is
getting
more
and
more
powerful.
6)
In
spring
days
get
longer
and
longer.
7)
The
harder
you
work
at
your
lessons,
the
better
you
will
do
in
them.
8)
The
more
careful
you
are,
the
fewer
mistakes
you
will
make
in
the
experiment.
9)
The
more
you
practice,
the
more
fluently
you
will
speak.
A.
Which
of
these
structures
is
used
to
say
that
something
is
changing
B.
Which
of
these
structures
is
used
to
say
that
things
change/are
changing
together
C.
Which
structure
repeats
the
same
adjective
Exercises:
Use
the
words
below
to
write
sentences
as
in
the
example.
Example:
temperature/get/low
The
temperature
gets
lower
and
lower.
1)
hot
metal/get/big
2)
magnesium/get/hot
3)
sun/get/strong
during
the
morning
4)
sea/become/warm
点评：这一部分介绍了使用形容词和副词的比较级的两个句型。教师通过补充例句，增加学生的感性认识。
4.
屏幕呈现：通过这一练习，要求学生观察例句，考虑可以修饰形容词和副词比较级的副词，表示程度的副词(much，a
little…)+形容词和副词的比较级
Look
at
these
sentences.
1)
Come
a
bit
closer.
2)
We
need
rather
more
than
that.
3)
It
weighs
a
little
more
than
before.
4)
It’ll
be
a
lot
heavier
than
magnesium.
5)
Is
it
any
heavier
6)
We
need
a
piece
which
is(very)much
bigger
than
that.
A.
Underline
the
comparative
expressions.
B.
Circle
the
adverbs
used
to
give
more
information
about
the
comparative
expressions.
Exercises:
Compare
the
items/people
you
know.
Use
one
of
the
following
expressions
a
little
a
bit
a
lot
rather
no
any
(very)
much
lots
Example:
Two
lessons
The
physics
lesson
is
a
lot
more
interesting
than
the
chemistry
lesson.
1）
2）
3）
点评：这一活动通过小组讨论，写出规范的比较级的句子。学生在交流、讨论、思考中巩固了对形容词比较级的句子结构的认识和应用。
（三）Read
the
following
passage
My
friend
Paul
will
never
forget
his
first
chemistry
teacher．He
was
a
little
man
with
thick
glasses，but
he
had
a
strange
way
of
making
his
classes
lively
and
interesting．And
his
lessons
were
not
easily
forgotten．
Paul
remembers
one
of
his
first
lessons
from
this
teacher．After
the
students
were
all
in
the
chemistry
lab．the
teacher
brought
out
three
bottles．One
was
filled
with
petrol，one
with
castor
oil
and
one
with
vinegar．“Now
watch
carefully，”said
the
teacher．
He
then
filled
a
cup
with
some
of
the
petrol．some
of
the
castor
oil
and
some
of
the
vinegar．As
the
students
watched
him
quietly，he
mixed
the
three
together．After
that，he
held
up
one
of
his
fingers
and
showed
it
to
the
class．He
then
dipped
it
into
the
cup．After
a
few
seconds
he
took
his
finger
out．“Now
watch，”
he
said．“Remember，you
must
do
everything
as
I
do．”
He
put
a
finger
in
his
mouth，tasted
it
and
smiled，looking
rather
pleased．Then
he
handed
the
cup
around
the
class
of
students．Each
student
dipped
a
finger
into
the
mixture
and
sucked
it．Instead
of
smiling，each
of
them
made
a
face．The
mixture
tasted
terrible．
When
the
cup
was
at
last
returned
to
the
teacher，he
said
sadly，“I’m
sorry，none
of
you
watched
carefully
enough.
Yes,
I
sucked
a
finger,
but
the
finger
I
put
into
my
mouth
was
not
the
one
I
had
dipped
into
the
cup.”
It
was
Paul’s
first
important
lesson
as
a
student
of
chemistry
and
he
never
forgot
it．
点评：这是一篇与实验有关的小故事，引导学生阅读，即让学生体会到实验的乐趣，又让学生体会到描述实验的语言。文章内容与本模块教学内容紧密衔接，为学生提供了真实的语言情景。既用到了刚学过的部分语言知识，也接触到了如何准确描述实验过程等。
5.
Homework:
1）诵读本模块中的物质名词。
2）查阅化学实验中常用的工具名称。
六、课后反思：
在本节课教案的设计过程中，我们认为首先进行数字和形容词比较级的复习，能够为学生进一步学习实验描述做准备。所以我们整合了数词和有关比较级的内容作为这一课时的主要内容。把零散的知识集中起来，有利于学生的突破和提高。
导入环节能有效帮助学生将已知知识与新信息联系起来，激发其对科普文章的学习兴趣。最大限度地为不同层次的学生获得语言能力的提高大基础。
本节课设计还有一些不足之处。比如，复习的旧知识多而且零碎，学生水平又不统一。如何既保证学生的学习兴趣，又保证学习效果，是一个不好解决的难题。
七、总体点评:
这一堂课的设计符合新课标的要求，目标设定上从知识与技能、过程与方法、情感态度价值观等几个方面入手，符合学情，层层入深，分层设计。教学程序上，把巩固基础和新课讲授融为一体，把抽象的数字及其比较级讲授的面面俱到但不繁琐。把课文科学实验设计得生动有趣，学到了英语基础知识，也注重英语表达在化学实验报告中的应用。调动了学生学习积极性，以学生为主体，自我探究和小组讨论结合，有效地完成了任务型教学。符合和谐、高效课堂的要求，是一节比较成功的课。