This document provides an overview of a 40-minute English grammar class for 7th grade students on the topic of prepositions. It introduces prepositions and their kinds, including prepositions of place and direction, time and date, and travel and movement. Examples and exercises are provided to help students understand and practice using different prepositions. The class includes filling in blanks on the board, other exercises to choose the correct preposition, and an activity where students write out prepositions.