<s>
The	O
catalog	O
on	O
OpenEd	O
is	O
searchable	B-Application
by	O
keyword	O
and	O
by	O
standard	O
:	O
Common	O
Core	O
Math	O
,	O
Common	O
Core	O
Language	O
Arts	O
,	O
Next	O
Gen	O
Science	O
Standards	O
,	O
California	O
History	O
,	O
TEKS	O
(	O
Texas	O
)	O
and	O
New	O
York	O
Common	O
Core	O
Social	O
Studies	O
.	O
</s>
