The document is a lesson plan for teaching expressions of agreeing and disagreeing to third year middle school students. It includes 5 activities: 1) An introduction using classroom rules to discuss agreement and disagreement. 2) Presenting vocabulary and example sentences. 3) A practice activity comparing student opinions using charts and graphs. 4) A speaking activity in groups to produce the language. 5) A webquest for homework to reinforce the lesson. The justification explains that the plan draws from various teaching approaches like communicative language teaching and task-based learning to engage students and help them acquire and practice the target language.