Question

how do you change language arts to math on here (open study)??

Answer 1

You can follow this link:
http://openstudy.com/study#/groups/Mathematics
or, more generally, click "Find More Subjects" at the top of the page.

Answer 2

On the top left corner where the notifications, fanned users, and messages are, "Find more subjects" is right next to Fanned users.

Answer 3

But they don't have all the subjects that you might have that they don't so find ones that are similar to the subject you have....