I think its an elementary school text book that was found after being brought up from the center of the earth.
the writing looks like the elvish script from lord of the rings.

Reminds me of my 5th grade math book i threw down a well & said i lost.
it's probably sitting in a museum on middle earth right now still confusing the shit out of people.
god i hated math....
The elf kid who lost it probably got his ass whipped for losing his school book the same as i did,
as above so below.