T H E E F F E CT O F US I NG RI D DL E S O N T H E S E V E NT H G RADE S T UDE NT S ’ VO CAB UL ARY ACH I E VE M E NT AT S M P N I JE N G G AW AH I N T H E 2012/ 2013 ACADE M I C YE AR I N T H E 2012/ 2013 ACADE M I C YE AR I N T H E 2012/ 2013 ACADE M I C YE AR
Abstract
Voc
a
bul
a
r
y
i
s
one
of
t
he
l
a
ng
ua
ge
c
om
pone
nt
s
t
ha
t
c
a
nnot
be
s
e
pa
r
a
t
e
d
f
r
om
l
e
a
r
ni
n
g
E
n
g
l
i
s
h
i
n
g
e
n
e
r
a
l
.
I
t
i
s
t
he
ke
y
a
s
pe
c
t
of
t
he
f
our
l
a
n
g
ua
ge
s
ki
l
l
s
.
Ac
c
or
di
n
g
t
o
Ta
r
i
ga
n
One
of
t
he
t
e
c
hni
que
s
t
h
a
t
c
a
n
be
us
e
d
t
o
t
e
a
c
h
v
oc
a
bul
a
r
y
i
s
r
i
ddl
e
s
.
R
i
d
dl
e
s
c
a
n
m
a
ke
t
h
e
s
t
ude
nt
s
e
nj
o
y
i
n
t
e
a
c
hi
n
g
l
e
a
r
ni
ng
pr
o
c
e
s
s
a
nd
m
a
k
e
t
he
s
t
ude
nt
s
i
nt
e
r
e
s
t
e
d
a
nd
m
ot
i
va
t
e
d
i
n
l
e
a
r
ni
ng
En
g
l
i
s
h.
I
n
o
t
he
r
wor
ds
,
i
f
t
he
s
t
ude
nt
s
a
r
e
i
nt
e
r
e
s
t
e
d
a
nd
m
ot
i
va
t
e
d
i
n
l
e
a
r
ni
ng
En
g
l
i
s
h,
t
he
y
wi
l
l
b
e
e
a
s
i
e
r
t
o
unde
r
s
t
a
nd
a
nd
c
om
pr
e
he
n
d
t
he
wor
ds
t
h
e
y
l
e
a
r
n
s
o t
ha
t
i
t
c
a
n i
nf
l
ue
nc
e
t
he
i
r
a
c
hi
e
v
e
m
e
nt
.
Thi
s
r
e
s
e
a
r
c
h
w
a
s
qua
s
i
e
x
pe
r
i
m
e
nt
a
l
r
e
s
e
a
r
c
h.
The
pur
p
os
e
of
t
hi
s
r
e
s
e
a
r
c
h
wa
s
t
o
i
nve
s
t
i
ga
t
e
wh
e
t
he
r
or
not
t
he
r
e
w
a
s
a
s
i
gni
f
i
c
a
nt
e
f
f
e
c
t
o
f
us
i
ng
R
i
ddl
e
s
on
t
he
s
e
ve
nt
h
g
r
a
de
s
t
ude
nt
s
’
v
oc
a
bul
a
r
y
a
c
hi
e
ve
m
e
nt
a
t
S
M
P
N
1
J
e
ng
ga
wa
h
i
n
t
he
2012/
2013
a
c
a
de
m
i
c
y
e
a
r
.
The
a
r
e
a
of
t
hi
s
r
e
s
e
a
r
c
h
wa
s
S
M
P
N
1
J
e
ng
g
a
wa
h
.
I
t
wa
s
c
ho
s
e
n
pur
pos
i
ve
l
y
be
c
a
us
e
t
he
us
e
of
r
i
ddl
e
s
h
a
d
ne
ve
r
b
e
e
n
a
ppl
i
e
d
i
n
t
e
a
c
hi
n
g
x
i
i
i
l
e
a
r
ni
n
g
pr
oc
e
s
s
i
n
t
hi
s
s
c
hool
.
The
popul
a
t
i
on
s
of
t
hi
s
r
e
s
e
a
r
c
h
we
r
e
t
he
s
e
ve
n
t
h
g
r
a
de
s
t
ud
e
nt
s
of
S
M
P
N
1
J
e
ngg
a
w
a
h
i
n
t
he
201
2
/
201
3
a
c
a
de
m
i
c
y
e
a
r
.
Th
e
r
e
s
e
a
r
c
h
r
e
s
ponde
nt
s
w
e
r
e
de
t
e
r
m
i
ne
d
b
y
c
l
us
t
e
r
r
a
ndom
s
a
m
pl
i
ng
t
hr
ou
g
h
a
l
ot
t
e
r
y
.
Th
e
t
ot
a
l
num
be
r
of
t
he
r
e
s
ponde
n
t
s
wa
s
78
s
t
ude
nt
s
t
ha
t
c
ons
i
s
t
e
d
of
40
s
t
ude
nt
s
of
V
I
I
C
a
s
t
he
e
x
p
e
r
i
m
e
nt
a
l
g
r
oup
t
a
ug
ht
vo
c
a
bul
a
r
y
b
y
us
i
ng
r
i
ddl
e
s
a
nd
38
s
t
ude
n
t
s
of
V
I
I
A
a
s
c
ont
r
ol
g
r
oup
t
a
u
ght
voc
a
bul
a
r
y
b
y
us
i
n
g
l
e
c
t
ur
i
n
g
a
nd
q
ue
s
t
i
on
a
ns
we
r
t
e
c
hni
que
s
.
The
da
t
a
of
t
hi
s
r
e
s
e
a
r
c
h
w
e
r
e
c
ol
l
e
c
t
e
d
f
r
o
m
t
he
s
t
ude
nt
s
’
s
c
or
e
s
of
voc
a
bul
a
r
y
a
c
hi
e
ve
m
e
n
t
t
e
s
t
,
i
n
t
e
r
vi
e
w
a
nd
doc
um
e
nt
a
t
i
on
.
The
voc
a
bul
a
r
y
a
c
hi
e
ve
m
e
nt
t
e
s
t
wa
s
c
ol
l
e
c
t
e
d
f
r
om
t
he
pos
t
t
e
s
t
t
o
know
t
he
m
e
a
n
s
c
or
e
of
t
he
t
w
o
g
r
oups
,
a
nd
t
he
r
e
s
ul
t
wa
s
a
n
a
l
y
z
e
d
b
y
us
i
n
g
t
t
e
s
t
f
or
m
ul
a
t
hr
oug
h
S
P
S
S
.
B
a
s
e
d
on
t
he
c
a
l
c
ul
a
t
i
on,
t
he
m
e
a
n
s
c
or
e
of
t
he
e
x
pe
r
i
m
e
nt
a
l
g
r
oup
wa
s
hi
g
he
r
t
ha
n
t
he
m
e
a
n
s
c
or
e
of
t
he
c
ont
r
ol
gr
o
up
.
The
r
e
s
ul
t
of
t
h
e
t
t
e
s
t
a
na
l
y
s
i
s
wi
t
h
s
i
g
ni
f
i
c
a
nt
l
e
ve
l
of
5%
s
hows
t
h
a
t
t
he
s
i
g
ni
f
i
c
a
nt
v
a
l
ue
i
s
0.
0
33
t
ha
t
i
s
l
owe
r
t
ha
n
0
.
05
.
I
t
m
e
a
ns
t
ha
t
t
he
r
e
wa
s
a
s
t
a
t
i
s
t
i
c
a
l
di
f
f
e
r
e
n
c
e
be
t
we
e
n
t
he
e
x
p
e
r
i
m
e
nt
a
l
a
nd
t
he
c
ont
r
ol
g
r
oups
.
I
t
i
ndi
c
a
t
e
d
t
ha
t
t
he
r
e
w
a
s
a
s
i
g
ni
f
i
c
a
nt
e
f
f
e
c
t
of
us
i
ng
r
i
ddl
e
s
on
t
he
s
e
v
e
nt
h
g
r
a
de
s
t
ude
nt
s
’
voc
a
bul
a
r
y
a
c
h
i
e
ve
m
e
nt
a
t
S
M
P
N
1
J
e
ngg
a
wa
h
i
n
t
he
2012/
201
3
a
c
a
d
e
m
i
c
y
e
a
r
.
The
r
e
f
or
e
,
i
t
i
s
r
e
c
om
m
e
nde
d
f
or
t
he
t
e
a
c
h
e
r
t
o
us
e
r
i
ddl
e
s
a
s
a
t
e
c
hni
que
i
n
t
e
a
c
hi
n
g
voc
a
bul
a
r
y
Voc
a
bul
a
r
y
i
s
one
of
t
he
l
a
ng
ua
ge
c
om
pone
nt
s
t
ha
t
c
a
nnot
be
s
e
pa
r
a
t
e
d
f
r
om
l
e
a
r
ni
n
g
E
n
g
l
i
s
h
i
n
g
e
n
e
r
a
l
.
I
t
i
s
t
he
ke
y
a
s
pe
c
t
of
t
he
f
our
l
a
n
g
ua
ge
s
ki
l
l
s
.
Ac
c
or
di
n
g
t
o
Ta
r
i
ga
n
One
of
t
he
t
e
c
hni
que
s
t
h
a
t
c
a
n
be
us
e
d
t
o
t
e
a
c
h
v
oc
a
bul
a
r
y
i
s
r
i
ddl
e
s
.
R
i
d
dl
e
s
c
a
n
m
a
ke
t
h
e
s
t
ude
nt
s
e
nj
o
y
i
n
t
e
a
c
hi
n
g
l
e
a
r
ni
ng
pr
o
c
e
s
s
a
nd
m
a
k
e
t
he
s
t
ude
nt
s
i
nt
e
r
e
s
t
e
d
a
nd
m
ot
i
va
t
e
d
i
n
l
e
a
r
ni
ng
En
g
l
i
s
h.
I
n
o
t
he
r
wor
ds
,
i
f
t
he
s
t
ude
nt
s
a
r
e
i
nt
e
r
e
s
t
e
d
a
nd
m
ot
i
va
t
e
d
i
n
l
e
a
r
ni
ng
En
g
l
i
s
h,
t
he
y
wi
l
l
b
e
e
a
s
i
e
r
t
o
unde
r
s
t
a
nd
a
nd
c
om
pr
e
he
n
d
t
he
wor
ds
t
h
e
y
l
e
a
r
n
s
o t
ha
t
i
t
c
a
n i
nf
l
ue
nc
e
t
he
i
r
a
c
hi
e
v
e
m
e
nt
.
Thi
s
r
e
s
e
a
r
c
h
w
a
s
qua
s
i
e
x
pe
r
i
m
e
nt
a
l
r
e
s
e
a
r
c
h.
The
pur
p
os
e
of
t
hi
s
r
e
s
e
a
r
c
h
wa
s
t
o
i
nve
s
t
i
ga
t
e
wh
e
t
he
r
or
not
t
he
r
e
w
a
s
a
s
i
gni
f
i
c
a
nt
e
f
f
e
c
t
o
f
us
i
ng
R
i
ddl
e
s
on
t
he
s
e
ve
nt
h
g
r
a
de
s
t
ude
nt
s
’
v
oc
a
bul
a
r
y
a
c
hi
e
ve
m
e
nt
a
t
S
M
P
N
1
J
e
ng
ga
wa
h
i
n
t
he
2012/
2013
a
c
a
de
m
i
c
y
e
a
r
.
The
a
r
e
a
of
t
hi
s
r
e
s
e
a
r
c
h
wa
s
S
M
P
N
1
J
e
ng
g
a
wa
h
.
I
t
wa
s
c
ho
s
e
n
pur
pos
i
ve
l
y
be
c
a
us
e
t
he
us
e
of
r
i
ddl
e
s
h
a
d
ne
ve
r
b
e
e
n
a
ppl
i
e
d
i
n
t
e
a
c
hi
n
g
x
i
i
i
l
e
a
r
ni
n
g
pr
oc
e
s
s
i
n
t
hi
s
s
c
hool
.
The
popul
a
t
i
on
s
of
t
hi
s
r
e
s
e
a
r
c
h
we
r
e
t
he
s
e
ve
n
t
h
g
r
a
de
s
t
ud
e
nt
s
of
S
M
P
N
1
J
e
ngg
a
w
a
h
i
n
t
he
201
2
/
201
3
a
c
a
de
m
i
c
y
e
a
r
.
Th
e
r
e
s
e
a
r
c
h
r
e
s
ponde
nt
s
w
e
r
e
de
t
e
r
m
i
ne
d
b
y
c
l
us
t
e
r
r
a
ndom
s
a
m
pl
i
ng
t
hr
ou
g
h
a
l
ot
t
e
r
y
.
Th
e
t
ot
a
l
num
be
r
of
t
he
r
e
s
ponde
n
t
s
wa
s
78
s
t
ude
nt
s
t
ha
t
c
ons
i
s
t
e
d
of
40
s
t
ude
nt
s
of
V
I
I
C
a
s
t
he
e
x
p
e
r
i
m
e
nt
a
l
g
r
oup
t
a
ug
ht
vo
c
a
bul
a
r
y
b
y
us
i
ng
r
i
ddl
e
s
a
nd
38
s
t
ude
n
t
s
of
V
I
I
A
a
s
c
ont
r
ol
g
r
oup
t
a
u
ght
voc
a
bul
a
r
y
b
y
us
i
n
g
l
e
c
t
ur
i
n
g
a
nd
q
ue
s
t
i
on
a
ns
we
r
t
e
c
hni
que
s
.
The
da
t
a
of
t
hi
s
r
e
s
e
a
r
c
h
w
e
r
e
c
ol
l
e
c
t
e
d
f
r
o
m
t
he
s
t
ude
nt
s
’
s
c
or
e
s
of
voc
a
bul
a
r
y
a
c
hi
e
ve
m
e
n
t
t
e
s
t
,
i
n
t
e
r
vi
e
w
a
nd
doc
um
e
nt
a
t
i
on
.
The
voc
a
bul
a
r
y
a
c
hi
e
ve
m
e
nt
t
e
s
t
wa
s
c
ol
l
e
c
t
e
d
f
r
om
t
he
pos
t
t
e
s
t
t
o
know
t
he
m
e
a
n
s
c
or
e
of
t
he
t
w
o
g
r
oups
,
a
nd
t
he
r
e
s
ul
t
wa
s
a
n
a
l
y
z
e
d
b
y
us
i
n
g
t
t
e
s
t
f
or
m
ul
a
t
hr
oug
h
S
P
S
S
.
B
a
s
e
d
on
t
he
c
a
l
c
ul
a
t
i
on,
t
he
m
e
a
n
s
c
or
e
of
t
he
e
x
pe
r
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