Unit 1 Great scientists reading(共25张PPT)

(共25张PPT)
Unit1
Great
Scientists
教学模板PPT
英语人教版
必修5
Reading
John
Snow
Defeats“King
Cholera”
Get
the
main
idea
of
John
Snow
Defeats“King
Cholera”.
Know
how
to
prove
a
new
idea
in
scientific
research.
Learning
aims
Who
is
he?
He
has
made
a
famous
kite
experiment.
He
learned
a
lot
from
it
and
invented
lightning
rod
(避雷针).
Benjamin
Franklin
Lead
in
Who
is
he?
He
is
called
the
greatest
scientist
in
the
20th
century.
He
is
famous
for
the
Theory
of
Relativity.
Albert
Einstein
Who
is
he?
He
made
the
first
telescope
in
the
world.
His
observations
show
that
the
earth
moves
around
the
sun.
Galileo
麻醉学家、流行病专家。
首次提出预防霍乱的措施。
1854年，伦敦霍乱流行，斯诺通过研究霍乱病死者的日常生活情况，寻找到他们的共同行为模式，发现了霍乱与饮用不洁水的关系，由于及时切断了二者的联系，有效制止了霍乱的流行。
John
Snow
Can
you
guess
the
main
idea
of
the
passage?
John
Snow
was
a
well-known
doctor
in
London.
The
cause
of
Cholera
was
polluted
water.
The
source
of
all
drinking
water
should
be
examined.
How
John
Snow
collected,
analyzed
data
and
found
the
cause
of
the
cholera
and
solved
it
.
John
Snow
Defeats“King
Cholera”
what
why
how
Name
of
illness
Symptom(症状)
Aftereffect(后期)
cholera
(霍乱)
severe
vomiting
(呕吐)
and
diarrhoea
(腹泻)
die
quickly
from
a
loss
of
liquid
what
Many
deaths
in
African
countries
in
2005
and
even
now
5oo
deaths
in
10
days
in
1854
in
London.
why
draw
a
conclusion
think
of
a
method
collect
results
make
a
question
find
a
problem
analyse
the
results
find
supporting
evidence
find
a
problem
make
a
question
think
of
a
method
collect
results
analyse
the
results
draw
a
conclusion
How
to
prove
a
new
idea
in
scientific
research?
find
supporting
evidence
Who
is
John
Snow?
a
famous
doctor
in
London.
attended
her
as
her
personal
physician
Lead
in
draw
a
conclusion
find
a
problem
make
a
question
think
of
a
method
collect
results
analyse
the
results
Match-How
John
Snow
defeats“King
Cholera”
find
supporting
evidence
A.
Which
theory
is
correct?
B.
What
causes
cholera?
C.
Plot
information
on
a
map
to
find
out
where
people
died
or
did
not
die.
D.
Collect
data
on
those
who
were
ill
or
died
and
where
they
got
their
water.
E.
Find
other
evidence
to
support
the
analysis.
F.
Analyse
the
water
to
see
if
that
is
the
cause
of
the
illness.
G.
It
was
certain
that
polluted
water
carried
the
virus.
Find
a
problem:What
was
the
problem?
Cholera
was
a
deadly
disease
of
its
day,
but
neither
its
cause
nor
its
cure
was
understood.
Intensive
reading
Make
a
question:
What
were
the
two
theories
and
what
did
each
of
them
suggest?
The
first
theory
was
that
cholera
multiplied
in
the
air.
A
cloud
of
dangerous
gas
floated
around
until
it
found
its
victims.
It
suggested
that
cholera
was
spread
via
air.
The
second
theory
was
that
people
absorbed
cholera
into
their
bodies
with
their
meals.
It
suggested
that
cholera
was
spread
via
meals.
Think
of
a
method
&
collect
results:
Find
out
the
numbers
below
and
what
they
meant.
Numbers
What
they
meant
In
1854
500,
10
16,
37,
38&40
20,
21;
8,
9
7
Another
outbreak
of
cholera
hit
London.
More
than
500
people
died
in
10
days.
These
numbers
in
Broad
Street
near
the
water
pump
had
many
of
the
deaths
20
and
21
Broad
Street
and
8
and
9
Cambridge
Street
had
no
deaths
.
These
families
worked
in
the
pub
at
7
Cambridge
Street.
A
map
of
Broad
Street
What
method
did
he
use?
Broad
Street
Many
deaths
happened
here.
No
death
happened
here.
The
water
from
the
pump
was
to
blame.
Public
house
analyze
the
results:
What
was
the
source
of
water
for
the
two
streets?
The
source
was
the
river
polluted
by
the
dirty
water
from
London.
Find
supporting
evidence
:
What
extra
evidence
did
he
find?
A
woman
and
her
daughter
who
lived
far
away
but
drank
the
water
also
died.
Draw
a
conclusion
with
certainty
The
polluted
water
carried
the
disease.
Suggestion:
What
did
he
suggest?
He
suggested
that
the
source
of
all
the
water
supplies
be
examined.
Instruction:
What
were
the
water
companies
instructed
not
to
do?
They
were
instructed
not
to
expose
people
to
polluted
water
any
more.
Read
the
passage
again
and
fill
in
the
blanks:
John
Snow
was
a
well-known
______
in
London
in
the
___
century.
He
wanted
to
find
the
______
of
cholera
in
order
to
______
it.
In
1854
when
a
cholera
______
out,
he
began
to
gather
information.
He
_________
on
a
map
where
all
the
dead
people
had
lived
and
he
found
that
many
people
who
had
drunk
the
dirty
water
from
the
______
died.
So
he
decided
that
the
polluted
water
carried
cholera.
He
suggested
that
the
_______
of
all
water
supply
be
__________
and
new
methods
of
________
with
polluted
water
be
found.
Finally,
“King
Cholera”
was
defeated.
doctor
19th
cause
defeat
broke
marked
pump
source
examined
dealing
Comprehending
Ex.
1
Number
the
events
__
John
Snow
began
to
test
two
theories.
__
An
outbreak
of
cholera
hit
London
in
1854.
__
John
Snow
marked
the
deaths
on
a
map.
__
He
announced
that
the
water
carried
the
disease.
__
John
Snow
investigated
two
streets
where
the
outbreak
was
very
severe.
__
King
Cholera
was
defeated.
__
He
found
that
most
of
the
deaths
were
near
a
water
pump.
__
He
had
the
handle
removed
from
the
water
pump.
2
8
1
7
3
4
5
6
Post
reading
Heat
the
food
left
overnight
Cook
raw
food
thoroughly
Wash
hands
often
Keep
away
from
flies
choose
fresh
sea
food
Keep
the
kitchen
clean
Dispose
rubbish
properly.
Drink
boiled
water
How
do
we
keep
away
from
virus
and
stay
healthy？
谢谢
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