This document appears to be from an English medium high school lesson on subtraction where the difference is not more than 20. It includes the name of the school, lesson number, and subject being taught which is subtraction with differences of 20 or less. The teacher's name is also included.

1. BEF
AFTER
B.J.P.S.Samiti’s
M V HERWADKAR ENGLISH MEDIUM HIGH SCHOOL
LESSON NO -11
SUBTRACTION(DIFFERENCE NOT MORE THAN 20)
RESHMA S PATIL