中小学教育资源及组卷应用平台
新人教版（2019）英语选修性必修二
Unit
1
Science
and
scientists
Period
4
Talk
about
scientific
experience教学设计
课题
Period
4
Talk
about
scientific
experience
单元
Unit
1
学科
English
年级
Grade
2
教材
分析
This
is
the
fourth
period
of
this
unit.
The
Using
Language
section
of
this
unit
is
mainly
divided
into
two
parts.
Under
the
theme
of
man
and
self,
man
and
society,
students
need
to
consider
and
explore
the
benefits
of
experiential
learning
in
combination
with
the
content
of
the
textbook,
as
well
as
the
connotation
of
the
literacy
and
scientific
spirit
that
scientists
possess.
In
the
part,
students
have
listening
comprehension
and
oral
expression.
教学目标与核心素养
Knowledge
objectives:
To
master
the
scientific
experiences
in
listening
comprehension.
Skill
objectives:
Enable
the
Ss
to
understand
speakers
more
efficiently.
Develop
the
listening
and
speaking
ability
.
Emotional
objectives:
To
learn
more
about
the
scientific
phenomena
and
experiments.
重点
Talk
about
scientific
experiences;
The
expressions
of
scientific
experiments
or
museum
experiences
.
难点
To
talk
about
different
types
of
scientific
inquiry
activities,
describe
their
own
experiences
in
scientific
experiments
and
scientific
research,
and
communicate
with
classmates.
教学过程
教学环节
教师活动
学生活动
设计意图
导入新课
leading
–in
(PPT1-6)
1.Show
students
a
picture
and
ask
a
question:.
1)What
is
the
date
of
May
30th
?
Answer:Science
and
Technology
Workers'
Day
2.Look
at
the
photos
below,
and
tell
me
the
scientists
and
their
achievements.
China
Jiaolong
Submarine
Xu
Qinan
China
Quantum
Computing
Machine
Kong
Wei
cheng
China
Sky
Eye
Telescope
Nan
Rendong
Beidou
Navigation
Satellite
System
Chen
Zhonggui
Students
can
make
a
prediction
or
have
a
discussion
with
partner,the
answer
varies.
To
guide
students
to
predictive
ability.
讲授新课
Pre-Listening
Task
1
PPT7-12
1.Look
at
the
photos
below,
and
discuss
in
groups
what
these
activities
have
to
do
with
science.
Picture1：
1.What
can
you
see
in
this
picture?
2.What’s
the
boy
doing?
3.
Why
is
he
doing
that?
Key
words：Picture
A:a
giant
dish,
whisper
2.Discuss
in
groups
what
these
activities
have
to
do
with
science.Then
find
out
the
key
words
of
each
picture.
You
can
find
out
the
answer
to
the
following
question
of
Picture
B,C,D
and
E.
What
is
going
on
and
what
makes
it
happen?
Picture
B:a
piano
keyboard,
play
with
feet
Picture
C:
a
blue
screen,
bright
lights
Picture
D:
a
hall
of
mirrors,
reflect
Picture
E:a
white
light,
cast
shadows,
in
the
colour
of
the
rainbow
While-Listening---Task
3
PPT13-20
The
photos
above
are
related
to
the
conversation
you
will
hear.
Using
the
photos,
try
to
predict
the
answers
to
the
following
questions.
1.Where
are
the
people
in
the
conversation
going
to
go?
2.What
kind
of
place
is
it
and
what
does
it
focus
on?
3.What
kinds
of
things
can
you
do
there?
Answers:
1.
They
are
going
to
a
science
museum.
2.
It
is
a
science
museum
that
focuses
on
letting
visitors
experience
science
through
interactive
learning
exhibitions.
3.
You
can
probably
try
different
activities
to
learn
about
sound,
light,
reflection,
and
so
on.
For
example,
you
can
go
to
a
room
with
many
mirrors
facing
each
other
so
it
looks
like
there
are
many
copies
of
you!
Or
you
can
play
with
a
big
piano
on
the
floor.
Listen
to
the
conversation
and
complete
the
descriptions
with
some
key
words
.
1.A
where
you
can
see
myself
reflected
thousands
of
times
.
2.You
look
at
a
blue
screen
for
a
while
,and
then
suddenly
you
can
see
moving
around
on
it.These
are
our
3.You
stand
in
front
of
,and
it
casts
different
shadows
of
you,in
the
rainbow.
4.A
giant
that
you
can
use
your
feel
to
play.In
stead
of
the
sounds
of
a
piano
,it
plays
voices
of
.
5.
A
giant
dish:when
you
speak
into
it
,it
the
sound
back
and
.You
can
use
it
to
speak
in
a
to
someone
17
metres
away.
.
Answers:1.hall
of
mirrors
;
2.tiny
bright
lights;blood
cells;
3.a
white
light;every
colour
of;
4.piano
keyboard;classical
singers;
5.reflects;makes
it
louder;whisper
While-Listening---Task
4
PPT21-26
Listen
to
the
conversation
carefully
and
match
each
picture
according
to
the
key
words.
a
hall
of
mirrors,
see
myself
reflected
thousands
of
times
Picture
D:
a
blue
screen,
tiny
bright
lights,
blood
cells
Picture
C:
a
white
light,
cast
different
shadows,
in
every
colour
of
the
rainbow
Picture
E:
a
giant
piano
keyboard,
use
your
feet
to
play,
play
voices
of
classical
Picture
B:
a
giant
dish,
reflect
the
sound
back,
speak
in
a
whisper,
17
metres
away
Picture
A:
Listen
to
the
conversation
and
see
if
your
answers
for
Activity
2
are
correct
.
Then
write
down
the
letters
(A-E)
for
the
photos
in
the
order
that
you
hear
them
described.
Answers:1.
D
2.
C
3.
E
4.B
5.
A
While-Listening---Task
5
PPT27-34
Look
at
the
pictures
and
guess
what
they
are
about.
Answers:The
City
of
Science
and
Industry
,a
museum
in
Paris
Listen
to
the
tape
and
discuss
the
following
questions
in
groups.
Would
you
like
to
go
to
this
museum?Why
or
why
not?
Suggested
simple
questions:
1)What
can
you
do
in
the
City
of
Science
and
Industry?
2)What
do
you
like
most
about
it?
Suggested
structures:
1).I
would
like
to
go
to
this
museum
to
see
...
I
am
curious
to
know
...
I
can
see
my
blood
cells
...
I
am
sure
it
will
be
...
2)What
I
like
most
is
that
I
can
...
The
reason
why
I
would
like
to
go
to
this
museum
is
that
it
is..
Answers
:
1).I
would
like
to
go
to
this
museum
to
see
the
blue
screen.
I
am
curious
to
know
what
on
earth
is
going
on
there
and
why
I
can
see
my
blood
cells
moving
around
like
tiny
bright
lights.
I
am
sure
it
will
be
a
lot
of
fun.
2).What
I
like
most
is
that
I
can
participate
in
the
interactive
activities
and
explore
the
scientific
phenomena
for
myself.
The
reason
why
I
would
like
to
go
to
this
museum
is
that
it
is
an
amazing
place
fbr
us
to
have
fun,
learn,
and
get
inspired.
Just
as
the
pictures
show,
there
is
a
lot
of
interesting
stuff
to
do
there.
2.
Are
there
any
museums
like
this
in
China?
What
other
interesting
museums
are
there?
You
can
discuss
like
these:
Have
you
ever
been
to
such
a
museum
in
China?
Where
is
it?
What
is
it
like?
What
did
you
do
there?
What
other
interesting
museums
did
you
visit?
Answers:Yes.There
is
the
China
Science
and
Technology
Museum
in
Beijing.
It's
very
grand
and
mysterious.
I
went
to
explore
the
theories
of
science.I
also
have
visited
the
Shanghai
Science
and
Technology
Museum.
Groupwork---Task
6
PPT35
Work
in
groups.
Brainstorm
some
scientific
research
or
experiment
that
you
are
interested
in.
Discussion-Task
7
PPT36-39
Discussion
and
presentation.
Reading
material:
Today,
I
want
to
talk
to
you
about
a
very
strange
phenomenon
called
a
non-Newtonian
fluid.
You
can
make
it
easily
using
equal
parts
of
water
and
cornflour,
like
I
have
here.
A
non-Newtonian
fluid
is
strange
because
you
can
pour
it
like
a
liquid
but
if
you
put
any
pressure
on
it,
it
suddenly
becomes
hard
as
concrete.
In
fact,
it
becomes
hard
enough
to
stand
on.
Then,
as
soon
as
you
take
the
pressure
off,
it
becomes
a
liquid
again.
This
shows
that
it
is
possible
that
something
can
exist
as
a
liquid
and
a
solid
at
the
same
time.
Ask:What
information
does
the
example
give
out
about
the
scientific
phenomenon
?
A
scientific
phenomenon/experimentNameMaterials
neededTheory
behind
itProcessSignificance
Discuss
to
prepare
for
the
presentation,considering
the
Useful
structures:
...can/cannot
exist
in
the
form
of
a
solid/gas
and
a
liquid/plasma
..
...is
both
a
...and
a
...
at
the
same
time...
how
light/sound
is
reflected...
...the
existence
of
other...
This
occurs
when...
If
you
...,it
will
become...
That
demonstrates...
This
experiment/research
shows...
Through
this,we
know
that...
We
can
prove
that...
This
evidence
proves...
Ask
students
to
have
a
presentation:
The
scientific
phenomenon
is
called
a
non-Newtonian
fluid.It
can
exist
in
the
form
of
a
solid
and
a
liquid.
What
is
strange
is
that
if
you
put
any
pressure
on
it,
it
suddenly
becomes
hard
as
concrete.
If
you
take
the
pressure
off,
it
will
become
a
liquid
again.
That
demonstrates
that
something
can
exist
as
a
liquid
and
a
solid
at
the
same
time.
To
make
students
think
about
or
imagine
the
picture’s
meaning.
Students
can
give
some
related
sentences
by
the
teachers’
guidance.
While
listening
,
students
can
match
each
picture
with
the
key
words.This
can
be
done
twice,make
notes
for
the
first,then
choose
the
correct
answer
the
second
time.
This
part
is
a
little
difficult
for
most
students.If
can
not
do
it
individually,they
can
have
a
discussion
with
partner
or
listen
to
the
audio
two
or
three
times.
Students
can
have
a
discussion
in
groups
and
brainstorm
the
names
of
some
great
people
and
write
them
in
the
table
below.
Cultivate
students'
imagination
To
discuss
what
the
experiment
develop
using
the
following
language
fillers
to
give
yourself
time
to
think.
To
inspire
students’
curiosity
and
thinking.
To
help
students
guess
the
meaning
of
each
picture
though
the
teacher’s
guidance
.
To
train
students
how
to
grasp
the
main
information
while
listening.
1.To
improve
students’
listening
comprehension
ability.
2.To
train
students’
verbal
ability.
1.To
train
students’
imagination
.
2.To
broaden
students’
view.
To
train
students’
expressiveness.
课堂练习
及课堂活动
PPT40-44
1.Translate
useful
structures
exist
in
the
form
of
__________
This
occurs
when...________________.
That
demonstrates...__________________
Through
this,we
know
that
...____________
This
evidence
proves
..._________________
这是一个以让参观者通过互动学习展览体验科学为重点的科学博物馆。
这表明某种物质有可能同时以液体和固体的形式存在。
Answers:以。。。形式存在
当。。。时这个会发生
那个证明了。。。
通过这个，我们得知。。。
这个证据证明。。。
It
is
a
science
museum
that
focuses
on
letting
visitors
experience
science
through
interactive
learning
exhibitions.
This
shows
that
it
is
possible
that
something
can
exist
as
a
liquid
and
a
solid
at
the
same
time.
Discussion
Talking
about
scientific
phenomenon
Today,
I
want
to
talk
to
you
about
the
positive
and
negative
charges
of
molecules.
We
can
demonstrate
how
these
interact
through
a
simple
experiment
using
milk,
dish
soap,
and
food
colouring.
First,
cover
the
bottom
of
a
shallow
plate
with
milk.
Now
add
two
or
three
drops
of
different
liquid
food
colouring
to
the
centre
of
the
milk.
They
should
form
one
large
dark
puddle
in
the
middle
of
the
milk.
Now,
dip
a
cotton
swab
into
dish
soap,
and
place
it
into
the
middle
of
the
food
colouring.
You
will
see
the
colours
quickly
move
to
escape
from
the
soap,
making
interesting
and
beautiful
patterns.
This
happens
because
the
dish
soap
molecules
have
a
strong
negative
charge,
and
the
milk
molecules
have
a
strong
positive
charge.
Like
magnets,
these
molecules
are
attracted
to
each
other,
and
so
they
appear
to
move
around
on
the
plate,
taking
the
food
colouring
with
them,
making
it
look
like
the
colours
are
quickly
moving
to
escape
from
the
soap.
Presentation
The
scientific
experiment
is
called
interact
between
the
positive
and
negative
charges.Milk,
dish
soap,
and
food
colouring
are
what
the
experiment
needs.
If
you
add
two
or
three
drops
of
different
liquid
food
colouring
to
the
milk,they
should
form
one
large
dark
puddle.But
after
you
do
so
,you
will
see
the
colours
quickly
move
to
escape
from
the
soap.
That
is
because
the
dish
soap
molecules
have
a
strong
negative
charge,
and
the
milk
molecules
have
a
strong
positive
charge.
They
attract
each
other,
and
so
they
move
around
on
the
plate,
taking
the
food
colouring
with
them,just
like
the
colours
are
escaping
from
the
soap.
3.Put
the
following
sentences
into
English
1).Milk,
dish
soap,
and
food
colouring
are___________________(实验所需要的）.
2)That
is
____________
(因为肥皂分子带有很强的负电荷）.
3)What
is
strange
is
___________________
__________(如果你对它施加任何压力，它会突然变得像混凝土一样硬）.
Answers:
1)what
the
experiment
needs.
2)because
the
dish
soap
molecules
have
a
strong
negative
charge.
3)that
if
you
put
any
pressure
on
it,
it
suddenly
becomes
hard
as
concrete.
To
name
the
predicative
clause
and
state
its
function.
After
discussion,
students
can
draw
a
conclusion
about
the
experiment
by
using
the
words
and
phrases
given.
Then
report
back
to
the
class.
To
summarize
grammar
rules
by
observing
and
discussing.
To
give
students
detailed
and
concrete
situations.
To
improve
students’
listening
and
comprehension
ability.
To
train
students’
verbal
ability.
课堂小结
Summary:
1.Develop
the
strategies
for
predicting
listening
content
with
pictures.
2.Help
students
understand
the
clues
and
key
information
in
the
listening
dialogue.
Homework:
Do
Exercise
3
on
page
63
of
the
workbook.
Prediction
Pre-listening
While-listening
Post-listening
Discussion
1.To
guide
students
to
predict
listening
contents.
2.To
help
students
improve
the
ability
of
input
and
output
though
the
listening
and
discussion
.
3.To
improve
students’
listening
and
comprehension
ability.
4.To
train
students’
verbal
ability.
To
train
students’
listening
ability
.
板书
1.
Picture
A:
a
giant
dish,
whisper
Picture
B:
a
piano
keyboard,
play
with
feet
Picture
C:
a
blue
screen,
bright
lights
Picture
D:
a
hall
of
mirrors,
reflect
Picture
E:
a
white
light,
cast
shadows,
in
the
colour
of
the
rainbow
2.
3.
What
scientific
phenomenon
does
Picture
A/B/C/D/E
show?
(A
sound/light
phenomenon.)
Did
you
guess
correctly?
How
did
you
make
the
guess?
/
Why
didn't
you
guess
correctly?
4.
What
can
you
do
in
the
City
of
Science
and
Industry?
What
do
you
like
most
about
it?
5.
A
scientific
phenomenon/experimentNameMaterials
neededTheory
behind
itProcessSignificance
21世纪教育网
www.21cnjy.com
精品试卷·第
2
页
（共
2
页）
21世纪教育网(www.21cnjy.com)(共47张PPT)
Period
4
Talk
about
scientific
experience
Unit
1
Science
and
Scientists
选择性必修二
人教版（2019）
Lead-in
What
is
the
date
of
May
30th
?
Science
and
Technology
Workers'
Day
Lead
in
Look
at
the
photos
below,
and
tell
me
the
scientists
and
their
achievements.
China
Jiaolong
Submarine
Xu
Qinan
Lead
in
Look
at
the
photos
below,
and
tell
me
the
scientists
and
their
achievements.
China
Quantum
Computing
Machine
Kong
Wei
cheng
Lead
in
Look
at
the
photos
below,
and
tell
me
the
scientists
and
their
achievements.
China
Sky
Eye
Telescope
Nan
Rendong
Lead
in
Look
at
the
photos
below,
and
tell
me
the
scientists
and
their
achievements.
The
Beidou
Navigation
Satellite
System
Chen
Zhonggui
Pre-Listening-Task
1
1.What
can
you
see
in
this
picture?
Look
at
the
photos
below,
and
discuss
in
groups
what
these
activities
have
to
do
with
science.
2.
What's
the
boy
doing?
3.
Why
is
he
doing
that?
Picture
A:
a
giant
dish,
whisper
Pre-Listening-Task
1
What
is
going
on
and
what
makes
it
happen?
B
C
D
E
Discuss
in
groups
what
these
activities
have
to
do
with
science.Then
find
out
the
key
words
of
each
picture.
Pre-Listening-Task
1
Picture
B:
a
piano
keyboard,
play
with
feet
Pre-Listening-Task
1
Picture
C:
a
blue
screen,
bright
lights
Pre-Listening-Task
1
Picture
D:
a
hall
of
mirrors,
reflect
Pre-Listening-Task
1
Picture
E:
a
white
light,
cast
shadows,
in
the
colour
of
the
rainbow
While-Listening---Task
3
Task
3
1.Where
are
the
people
in
the
conversation
going
to
go?
2.What
kind
of
place
is
it
and
what
does
it
focus
on?
3.What
kinds
of
things
can
you
do
there?
The
photos
above
are
related
to
theconversation
you
will
hear.
Using
the
photos,
try
to
predict
the
answers
to
the
following
questions.
1.Where
are
the
people
in
the
conversation
going
to
go?
They
are
going
to
a
science
museum.
Task
3
2.What
kind
of
place
is
it
and
what
does
it
focus
on?
It
is
a
science
museum
that
focuses
on
letting
visitors
experience
science
through
interactive
learning
exhibitions.
The
photos
above
are
related
to
theconversation
you
will
hear.
Using
the
photos,
try
to
predict
the
answers
to
the
following
questions.
3.What
kinds
of
things
can
you
do
there?
You
can
probably
try
different
activities
to
learn
about
sound,
light,
reflection,
and
so
on.
For
example,
you
can
go
to
a
room
with
many
mirrors
facing
each
other
so
it
looks
like
there
are
many
copies
of
you!
Or
you
can
play
with
a
big
piano
on
the
floor.
Task
3
The
photos
above
are
related
to
theconversation
you
will
hear.
Using
the
photos,
try
to
predict
the
answers
to
the
following
questions.
While-Listening---Task
3
1.A
where
you
can
see
myself
reflected
thousands
of
times
.
2.You
look
at
a
blue
screen
for
a
while
,and
then
suddenly
you
can
see
moving
around
on
it.These
are
our
.
Listen
to
the
conversation
and
complete
the
descriptions
with
some
key
words
.
3.You
stand
in
front
of
,and
it
casts
different
shadows
of
you,in
the
rainbow.
4.A
giant
that
you
can
use
your
feel
to
play.In
stead
of
the
sounds
of
a
piano
,it
plays
voices
of
.
5.
A
giant
dish:when
you
speak
into
it
,it
the
sound
back
and
.You
can
use
it
to
speak
in
a
to
someone
17
metres
away.
While-Listening---Task
3
1.A
where
you
can
see
myself
reflected
thousands
of
times
.
2.You
look
at
a
blue
screen
for
a
while
,and
then
suddenly
you
can
see
moving
around
on
it.These
are
our
.
Listen
to
the
conversation
and
complete
the
descriptions
with
some
key
words
.
hall
of
mirrors
tiny
bright
lights
blood
cells
While-Listening---Task
3
3.You
stand
in
front
of
,and
it
casts
different
shadows
of
you,in
the
rainbow.
4.A
giant
that
you
can
use
your
feel
to
play.In
stead
of
the
sounds
of
a
piano
,it
plays
voices
of
.
Listen
to
the
conversation
roughly
and
write
down
some
key
words
.
a
white
light
every
colour
of
piano
keyboard
classical
singers
While-Listening---Task
3
5.
A
giant
dish:when
you
speak
into
it
,it
the
sound
back
and
.You
can
use
it
to
speak
in
a
to
someone
17
metres
away.
Listen
to
the
conversation
roughly
and
write
down
some
key
words
.
makes
it
louder
whisper
reflects
While-Listening---Task
4
a
hall
of
mirrors,
see
myself
reflected
thousands
of
times
Listen
to
the
conversation
carefully
and
match
each
picture
according
to
the
key
words.
Picture
D:
While-Listening---Task
4
a
blue
screen,
tiny
bright
lights,
blood
cells
Listen
to
the
conversation
carefully
and
match
each
picture
according
to
the
key
words.
Picture
C:
While-Listening---Task
4
a
white
light,
cast
different
shadows,
in
every
colour
of
the
rainbow
Listen
to
the
conversation
carefully
and
match
each
picture
according
to
the
key
words.
Picture
E:
While-Listening---Task
4
a
giant
piano
keyboard,
use
your
feet
to
play,
play
voices
of
classical
Listen
to
the
conversation
carefully
and
match
each
picture
according
to
the
key
words.
Picture
B:
While-Listening---Task
4
a
giant
dish,
reflect
the
sound
back,
speak
in
a
whisper,
17
metres
away
Listen
to
the
conversation
carefully
and
match
each
picture
according
to
the
key
words.
Picture
A:
While-Listening---Task
4
Listen
to
the
conversation
and
see
if
your
answers
for
Activity
2
are
correct
.
Then
write
down
the
letters
(A-E)
for
the
photos
in
the
order
that
you
hear
them
described.
1.
D
2.
C
3.
E
4.
B
5.
A
While
-Listening---Task
5
Look
at
the
pictures
and
guess
what
they
are
about.
While
-Listening---Task
5
Look
at
the
pictures
and
guess
what
they
are
about.
While
-Listening---Task
5
Look
at
the
pictures
and
guess
what
they
are
about.
The
City
of
Science
and
Industry
,a
museum
in
Paris
While
-Listening---Task
5
Listen
to
the
tape
and
discuss
the
following
questions
in
groups.
I
would
like
to
go
to
this
museum
to
see
...
I
am
curious
to
know
...
I
can
see
my
blood
cells
...
I
am
sure
it
will
be
...
What
I
like
most
is
that
I
can
...
The
reason
why
I
would
like
to
go
to
this
museum
is
that
it
is..
1.
Would
you
like
to
go
to
this
museum?Why
or
why
not?
What
can
you
do
in
the
City
of
Science
and
Industry?
What
do
you
like
most
about
it?
While
-Listening---Task
5
Answer
the
following
questions.
What
can
you
do
in
the
City
of
Science
and
Industry?
I
would
like
to
go
to
this
museum
to
see
the
blue
screen.
I
am
curious
to
know
what
on
earth
is
going
on
there
and
why
I
can
see
my
blood
cells
moving
around
like
tiny
bright
lights.
I
am
sure
it
will
be
a
lot
of
fun.
While
-Listening---Task
5
Answer
the
following
questions.
What
do
you
like
most
about
it?
The
reason
why
I
would
like
to
go
to
this
museum
is
that
it
is
an
amazing
place
fbr
us
to
have
fun,
learn,
and
get
inspired.
Just
as
the
pictures
show,
there
is
a
lot
of
interesting
stuff
to
do
there.
What
I
like
most
is
that
I
can
participate
in
the
interactive
activities
and
explore
the
scientific
phenomena
for
myself.
While
-Listening---Task
5
Listen
to
the
tape
and
discuss
the
following
questions
in
groups.
You
can
discuss
like
these:
Have
you
ever
been
to
such
a
museum
in
China?
Where
is
it?
What
is
it
like?
What
did
you
do
there?
What
other
interesting
museums
did
you
visit?
2.
Are
there
any
museumes
like
this
in
China?
What
other
interesting
museums
are
there?
While
-Listening---Task
5
Yes.
There
is
the
China
Science
and
Technology
Museum
in
Beijing.
It's
very
grand
and
mysterious.
I
went
to
explore
the
theories
of
science.
I
also
have
visited
the
Shanghai
Science
and
Technology
Museum.
2.
Are
there
any
museumes
like
this
in
China?
What
other
interesting
museums
are
there?
Answer
the
following
questions.
Groupwork---Task
6
Work
in
groups.
Brainstorm
some
scientific
research
or
experiment
that
you
are
interested
in.
water
plants
5G
technology
life
environmental
science
force
energy
bacteria
Discussion-Task
7
Discussion
and
presentation.
Reading
material:
Today,
I
want
to
talk
to
you
about
a
very
strange
phenomenon
called
a
non-Newtonian
fluid.
You
can
make
it
easily
using
equal
parts
of
water
and
cornflour,
like
I
have
here.
A
non-Newtonian
fluid
is
strange
because
you
can
pour
it
like
a
liquid
but
if
you
put
any
pressure
on
it,
it
suddenly
becomes
hard
as
concrete.
In
fact,
it
becomes
hard
enough
to
stand
on.
Then,
as
soon
as
you
take
the
pressure
off,
it
becomes
a
liquid
again.
This
shows
that
it
is
possible
that
something
can
exist
as
a
liquid
and
a
solid
at
the
same
time.
Discussion-Task
7
Discussion
and
presentation.
What
information
does
the
example
give
out
about
the
scientific
phenomenon
?
A
scientific
phenomenon/experiment
Name
Materials
needed
Theory
behind
it
Process
Significance
a
non-Newtonian
fluid
water
，
cornflour
Isaac
Newton's
mathematical
principles
of
viscosity
You
can
pour
it
like
a
liquid
but
if
you
put
any
pressure
on
it,
it
suddenly
becomes
hard
as
concrete.
something
can
exist
as
a
liquid
and
a
solid
at
the
same
time
Discussion-Task
7
Discussion
and
presentation
Useful
structures:
...can/cannot
exist
in
the
form
of
a
solid/gas
and
aliquid/plasma
..
...is
both
a
...and
a
...
at
the
same
time...
how
light/sound
is
reflected...
...the
existence
of
other...
This
occurs
when...
If
you
...,it
will
become...
That
demonstrates...
This
experiment/research
shows...
Through
this,we
know
that...
We
can
prove
that...
This
evidence
proves...
Discussion-Task
7
Presentation
The
scientific
phenomenon
is
called
a
non-Newtonian
fluid.It
can
exist
in
the
form
of
a
solid
and
a
liquid.
What
is
strange
is
that
if
you
put
any
pressure
on
it,
it
suddenly
becomes
hard
as
concrete.
If
you
take
the
pressure
off,
it
will
become
a
liquid
again.
That
demonstrates
that
something
can
exist
as
a
liquid
and
a
solid
at
the
same
time.
Translate
useful
structures
以...形式存在
当...时这个发生
通过这个，我们得知...
那个证明...
这个证据证明...
exist
in
the
form
of
__________
This
occurs
when...________________.
That
demonstrates...__________________
Through
this,we
know
that
..._____________________
This
evdience
proves
..._________________
这是一个以让参观者通过互动学习展览体验科学为重点的科学博物馆。
It
is
a
science
museum
that
focuses
on
letting
visitors
experience
science
through
interactive
learning
exhibitions.
This
shows
that
it
is
possible
that
something
can
exist
as
a
liquid
and
a
solid
at
the
same
time.
这表明某种物质有可能同时以液体和固体的形式存在。
Discussion
Talking
about
scientific
phenomenon
Today,
I
want
to
talk
to
you
about
the
positive
and
negative
charges
of
molecules.
We
can
demonstrate
how
these
interact
through
a
simple
experiment
using
milk,
dish
soap,
and
food
colouring.
First,
cover
the
bottom
of
a
shallow
plate
with
milk.
Now
add
two
or
three
drops
of
different
liquid
food
colouring
to
the
centre
of
the
milk.
They
should
form
one
large
dark
puddle
in
the
middle
of
the
milk.
Now,
dip
a
cotton
swab
into
dish
soap,
and
place
it
into
the
middle
of
the
food
colouring.
Discussion
You
will
see
the
colours
quickly
move
to
escape
from
the
soap,
making
interesting
and
beautiful
patterns.
This
happens
because
the
dish
soap
molecules
have
a
strong
negative
charge,
and
the
milk
molecules
have
a
strong
positive
charge.
Like
magnets,
these
molecules
are
attracted
to
each
other,
and
so
they
appear
to
move
around
on
the
plate,
taking
the
food
colouring
with
them,
making
it
look
like
the
colours
are
quickly
moving
to
escape
from
the
soap.
Presentation
The
scientific
experiment
is
called
interact
between
the
positive
and
negative
charges.Milk,
dish
soap,
and
food
colouring
are
what
the
experiment
needs.
If
you
add
two
or
three
drops
of
different
liquid
food
colouring
to
the
milk,they
should
form
one
large
dark
puddle.But
after
you
do
so
,you
will
see
the
colours
quickly
move
to
escape
from
the
soap.
That
is
because
the
dish
soap
molecules
have
a
strong
negative
charge,
and
the
milk
molecules
have
a
strong
positive
charge.
They
attract
each
other,
and
so
they
move
around
on
the
plate,
taking
the
food
colouring
with
them,just
like
the
colours
are
escaping
from
the
soap.
Put
the
following
sentences
into
English
Milk,
dish
soap,
and
food
colouring
are___________________
(实验所需要的）.
what
the
experiment
needs.
That
is
__________
_________
(因为肥皂分子带有很强的负电荷）.
What
is
strange
is
______________________________________
_____________________________________________________(如果你对它施加任何压力，它会突然变得像混凝土一样硬.
because
the
dish
soap
molecules
have
a
strong
negative
charge.
that
if
you
put
any
pressure
on
it,
it
suddenly
becomes
hard
as
concrete.
Homework
Do
Exercise
3
on
page
63
of
the
workbook.
谢谢
21世纪教育网（www.21cnjy.com)
中小学教育资源网站
有大把高质量资料？一线教师？一线教研员？
欢迎加入21世纪教育网教师合作团队！！月薪过万不是梦！！
详情请看：
https://www.21cnjy.com/help/help_extract.php
