In section 26.1 of the textbook, we focus on three prepositions of time: at, in, on and from_to. This video follows the lesson from the book, but adds a quiz-like element which challenges English learners and helps them retain the rules. The completion of the sentences are timed, which presents another challenge to motivate learners to be more reactive in responses. Leave us a comment and tell us how it works with your class.