<s>
TI-15	B-Device
Explorer	I-Device
is	O
a	O
calculator	B-Application
designed	O
by	O
Texas	O
Instruments	O
,	O
intended	O
for	O
use	O
in	O
classes	O
from	O
grades	O
3-5	O
.	O
</s>
<s>
It	O
is	O
the	O
successor	O
to	O
the	O
TI-12	B-Device
Math	I-Device
Explorer	I-Device
.	O
</s>
<s>
For	O
younger	O
students	O
,	O
TI	O
recommends	O
the	O
use	O
of	O
the	O
TI-108	B-Device
.	O
</s>
<s>
For	O
older	O
students	O
,	O
TI	O
recommends	O
the	O
use	O
of	O
the	O
TI-73	B-Device
Explorer	I-Device
.	O
</s>
<s>
Features	O
include	O
a	O
2-line	O
pixel	O
display	O
(	O
as	O
opposed	O
to	O
the	O
7-segment	B-General_Concept
display	I-General_Concept
of	O
several	O
other	O
calculators	B-Application
)	O
,	O
and	O
a	O
quiz-like	O
"	O
problem-solving	O
"	O
mode	O
.	O
</s>
