eng: evaluation of a lesson
eng: aim of a lesson, a goal of a lesson
eng: teacher of a lesson
eng: course delivery, teaching
eng: textbook, tutorial
eng: textboook set
eng: textbook author
eng: textbook supply
eng: monitoring of textbooks
eng: set, battery
eng: support
eng: creation of a supportive environment
eng: invitation
eng: invitation card
eng: value, price, worth, merit
