The document provides a lesson plan for a 6th grade English class. The lesson plan aims to teach students about the modal verbs "must" and "mustn't" to express obligation. It includes warm-up, development, and closing activities. For the warm-up, students will discuss rights and responsibilities. In the development, students will first match rights with responsibilities, then work in pairs writing classroom rules using "must" and "mustn't". To close, students will share their work from the paired activity.