Here are 20 topics to discuss with a friend or group. Practise agreeing and disagreeing even if you have to argue against something you actually believe in. One way to have fun with this is to make up a bunch of cards that say agree or disagree . Each person has to pick up a card and then the topic is read out. It is more fun to have a debate this way because you don't have to play your true self. Try to continue each discussion for at least five minutes. Use the expressions that you learned, including agreeing, disagreeing, asking for opinions, interrupting, etc.
If students are comfortable with the role-play debate format, you might present a handful of questions for debate. Students decide which stakeholders should be represented in a debate of each question. Then each student is assigned a question. Students assigned the same question gather together. Each decides (or draws a card to determine) which stakeholder they will represent. Students research the question from the perspective of their assigned stakeholder. The groups hold their own debates for practice. Then each small group presents its debate to the class. Students decide which stakeholders presented the strongest arguments.