(共24张PPT)
英语课件
北京版
六年级下册
Why
Are
People
of
Different
Colours?
Unit
2
Can
you
tell
me
more
about
her?
Lesson
8
How
many
basic
races?
white
yellow
brown
black
Why
Are
People
of
Different
Colours?
Why
Are
People
of
Different
Colours?
Free
Talk.
Let's
read
and
No.
the
Paragraph.
1
2
3
What's
the
main
idea?
A.All
skin
colours
come
from
melanin.
C.We
have
the
same
skin
colour
as
our
parents.
B.Melanin
protect
skin
from
the
sun.
Underline:
_______
Silent
reading.
Why
are
people
of
different
colours?
Underline:
_______
All
skin
colours
come
from
melanin.
Why
do
we
need
melanin?
Underline:
_______
epidermis
skin
People
with
more
melanin
are
darker
than
those
with
less
melanin
are
lighter.
more
melanin
darker
less
melanin
lighter
D.
B.
C.
A.
Our
body
make
melanin
to
protect
our
skin
from
the
sun
...
protect
us
from
the
sun
1
2
3
sun
skin
color
hot
area
colder
countries
more
more
darker
less
less
lighter
melanin
Jenny
and
Sue
are
both
American.
They
were
born
in
America.
Jenny's
parents
were
born
in
Africa.
Sue's
parents
were
born
in
Russia.
Which
is
Jenny?
Which
is
Sue?
Why?
Jenny
Sue
or
1
2
3
What
will
you
find
after
you
remove
the
bandage
several
days
later?
Why?
What
colour
are
the
most
people
in
Northern
Europe?
What
about
Africa?
Europe
Africa
Asia
America
Oceania
Homework.
1.
Tell
others
why
people
of
different
colors.
2.
Do
some
research
about
racist
and
racism.中小学教育资源及组卷应用平台
Unit
2
Can
you
tell
me
more
about
her?
Lesson
8?
一、教学内容：
二、教学目标：
能读懂短文，理解人的肤色与黑色素多少有关。
能通过阅读逐步形成根据上下文猜测、提取关键信息并归纳概括等能力。
了解世界上有不同肤色的人种、能简单说出其形成原因和聚集地区等感兴趣的信息，形成对信息调研和探究的能力。
三、教学重、难点：
教学重点：
能读懂短文，理解人的肤色与黑色素多少有关，并能用语言表达其因果关系。
形成针对长难语句文章的一些阅读策略。
教学难点：
形成针对长难语句文章的一些阅读策略。
用语言有逻辑的表达出人的肤色和人种形成的相关信息，形成综合语言运用能力。
四、教学过程
Step
1.
Before
Reading
活动1
.Talking
about
famous
persons.3m
T:
Guess
“Who
are
they?
”Do
they
have
the
same
color
of
their
faces?
活动目的：培养自信心，了解各色人种的和谐生活的情境，初步了解地球上有不同种类的各色人种。
活动2.
Free
talk
----
Basic
Race
Information.
3m
1)T:
How
many
people
are
there
on
the
earth?
Ss:
There
are
7.5
billion
people
till
2017.
T:
How
many
basic
races
among
these
people?
Ss:
3/4
races.
T:
What
are
they?
Ss:
white,
yellow,
black,
and?brown.
活动目的：引导学生世界人口和人种，了解常见的人种分类。
活动3
Free
talk.
Why
are
people
of
different
colors?
S1:
Because
of
the
pigments.
S2:
Some
people
likes
to
tan
more
than
others.
S3:
Our
genetics.
S4:
Tough
ones,
I
guess
I
have
to
do
some
research.
S5:
Upbringing,
where
you
live
where
you
are
from.
S6:
Some
people
just
enjoy
being
in
the
sun
more
than
others.
So
their
skin
are
darker.
S7:
No
clue.
S8:
That
I
don’t
know
the
answer
too.
S9:
You
talk
me
the
answer.
活动目的：聚焦阅读主题，引导学生思考肤色形成的原因，培养批判性思维能力。
Step
2.
While-reading
活动4.
Paragraph
Reading.
Read
and
No.
the
paragraph
T:
How
many
Paragraphs?
S:
There
are
3
paragraphs.
Read
and
underline
the
answer
with
double
lines.
Silently
reading
5m
and
then
talk
in
pairs
2m
Which
Paragraph
are
they
from?
All
skin
colours
come
from
melanin.
Melanin
protect
skin
from
the
sun.
We
have
the
same
skin
colour
as
our
parents.
In
cold
area,there
are
more
sunshine,
people
have
more
melanin,they
are
darker.
E.If
you
have
a
bandage
around
your
finger,
it
will
block
the
sun.
That
part
will
have
less
melanin.
F.When
the
sun
hits
you,
melanin
will
give
you
a
tan.
Sounding
and
watch
the
picture:
me.la.nin
Then
what
is
Melanin?
What
is
it
like?
Let’s
watch
the
pictures.
2m
活动目的：聚焦文本主题句，了解皮肤颜色形成的关键因素是melanin黑色素，并了解欧洲人文本的第一句是主题句的写作习惯。
活动5.
Know
more
about
melanin
T:
Now
we
know
skin
colors
come
from
melanin.
Why
do
we
need
melanin?
Let’s
listen
and
read
Paragraph
1
in
1
minute
and
find
out.
S:
Our
body
makes
melanin
to
protect
our
skin
from
the
sun.
T:
Because
too
much
sun
can
make
us
have
skin
illness
or
skin
cancer.
Watch
the
cartoon
of
making
melanin.
2m
T:
Let’s
watch，in
the
epidermis,
how
does
the
melanocytes
make
melanin.
So
our
skin
make
more
or
less
melanin,
and
also
make
our
skin
darker
and
lighter.
活动目的：通过单线批画，培养阅读技巧，通过观看视频，理解melanin的制作过程，理解深浅肤色形成的原因。
活动6理解
Darker
and
lighter
skin和protect
from
.
T:
Look
at
the
ABCD
kids:
Which
2
have
lighter
skin
and
which
2
have
lighter
skin.
Why？
S:
AB
have
lighter
skin.
Because
they
have
less
melanin.
CD
have
darker
skin.
Because
they
have
more
melanin.
T:
Melanin
can
protect
us
from
sun.
What
else
can
?
S:
For
example,
the
umbrella/
the
hat/the
sun
glasses/
the
sun
cream
can
protect
us
from
sun.
活动目的：通过看图和看动画，理解melanin和其作用后，通过4个小孩对比表达和保护皮肤免受太阳照射的物品的表达练习，检验文段理解和组织语言表达。
活动7
Paragraph
2
Reading.
T:
Now
we
know
melanin
makes
our
skin
darker
or
lighter.
Let’s
read
paragraph
2
and
find
out
how?
Can
you
divide
them
into
two
parts?
2)
Let’s
read
and
find
out
in
hot
area
and
in
colder
countries
how
does
the
sun
,
the
melanin
and
our
skin
change.
S:
hot
areas
are
near
the
equator.
Colder
countries
are
near
the
north
pole.
S:
in
hot
areas,
we
have
more
sun,
then
we
have
more
melanin,
at
last
our
skin
are
darker.
In
colder
countries,
we
have
less
sun,
then
we
have
less
melanin,
at
last
our
skin
are
lighter.
T:
So
we
know
the
places
are
different,
the
sunshine
are
different,
the
melanin
are
less
and
more,
that’s
why
we
have
different
races.
3)
But
look
at
Jenny
and
Sue,
they
are
from
the
same
America.
But
their
skin
colors
are
different.
Which
is
Jenny?
Which
is
Sue?
S:
Let’s
read
and
talk
in
pairs
why?
活动目的：通过观看地球仪了解赤道和北极附近阳光的多少，造成黑色素的多少，导致皮肤颜色的深浅。通过判断Jenny
and
Sue了解遗传对肤色的影响。
活动8
Paragraph
3
Reading.
T:
Now
let’s
listen
to
an
experiment
,which
one
do
you
think
it
is?
T:
read
it
ad
underline
why?
T:
What
is
tan?
Is
it
The
dark
part
?
活动目的：通过观看试验，理解绷带可以阻隔黑色素的形成，阳光照射皮肤后
会形成黑色斑。
Step
3
After-reading.
活动9
Watch
the
cartoon
and
talk
in
groups
Watch
the
cartoon
and
understand
Read
the
whole
passage
and
thing
about
the
questions.
Talk
in
group.
What
do
you
know
about
the
races?
Which
country
do
they
live
in？
Ss:
On
earth，
there
are
7.5
billion
people
in
2017.
Concasion,
Mogoloid,
Negroid
&
Australiod,
54%
,
37%，
8.5%，
0.5%
...
活动目的：关注整体文本，通过动画和阅读再次理解文本；通过讨论和资料补充，关注和思考不同人种居住的区域的不同，补充关于人口总数、比例和居住国家的信息。
Step
4
Homework.
Tell
others
why
people
of
different
colors.
Do
some
research
about
racist
and
racism.
五、板书设计
(
Unit
2
Lesson
8
W
hy
are
people
of
different
colours
?
melanin
sun
gene
)
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