<s>
Professor	B-Application
Kageyama	I-Application
's	I-Application
Maths	I-Application
Training	I-Application
:	I-Application
The	I-Application
Hundred	I-Application
Cell	I-Application
Calculation	I-Application
Method	I-Application
is	O
a	O
puzzle	O
video	O
game	O
published	O
by	O
Nintendo	O
and	O
developed	O
by	O
Jupiter	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
handheld	B-Application
video	I-Application
game	I-Application
console	I-Application
.	O
</s>
<s>
It	O
was	O
released	O
in	O
North	O
America	O
as	O
Personal	B-Application
Trainer	I-Application
:	I-Application
Math	I-Application
on	O
January	O
12	O
,	O
2009	O
and	O
also	O
in	O
South	O
Korea	O
in	O
2009	O
.	O
</s>
<s>
Maths	B-Application
Training	I-Application
,	O
designed	O
to	O
be	O
played	O
daily	O
,	O
uses	O
a	O
method	O
called	O
"	O
The	O
Hundred	O
Cell	O
Calculation	O
Method	O
"	O
that	O
focuses	O
on	O
repetition	O
of	O
basic	O
arithmetic	O
.	O
</s>
<s>
The	O
game	O
is	O
played	O
by	O
holding	O
the	O
Nintendo	B-Device
DS	I-Device
vertically	O
like	O
a	O
book	O
,	O
and	O
it	O
supports	O
both	O
right	O
-	O
and	O
left-handed	O
users	O
,	O
allowing	O
them	O
to	O
view	O
the	O
exercises	O
on	O
the	O
message	O
screen	O
while	O
they	O
note	O
down	O
their	O
answers	O
with	O
the	O
stylus	O
on	O
the	O
Touch	O
Screen	O
.	O
</s>
<s>
The	O
user	O
can	O
play	O
against	O
up	O
to	O
15	O
other	O
Nintendo	B-Device
DS	I-Device
users	O
by	O
using	O
the	O
DS	B-Device
Download	O
Play	O
option	O
or	O
with	O
multiple	O
game	O
cards	O
.	O
</s>
