The document provides a lesson plan for teaching commerce students about bills of exchange using role-playing. It consists of three phases:
1. In the orientation phase, the teacher draws students' attention to a scenario of a girl needing credit at a supermarket to familiarize them with the topic.
2. The presentation phase involves enacting a role play with three students as a supermarket manager, buyer, and bill payer, demonstrating a bill of exchange.
3. In the concluding phase, the teacher explains the key parties and features of a bill of exchange, consolidating student understanding through group work and review questions.