This document provides a lesson plan for a 90-minute English class for intermediate level teenagers focusing on dealing with misunderstandings. The lesson plan includes 5 stages: a warmup activity introducing misunderstanding sounds and situations; a presentation of phrases to show misunderstanding and structures to deal with them; two role-playing activities where students practice the language; a listening activity with conversations involving misunderstandings; and a closing game to review the content. The plan aims to develop students' listening, speaking, and language skills through collaborative and production-based tasks.