(specifically for 2nd grade in Russia or Eastern Europe).

Could you clarify which one you're interested in? For example,

I’m not quite sure what you’re looking for with "," and I want to make sure I give you the right information. That phrase could mean a few different things:

(like addition and subtraction drills) for 2nd-grade students.

A specific titled "Primery Matem" for 2nd graders.