The Concern Debates are Ireland's longest-running secondary-school debating competition. They began in 1984, when the winners were Rosaleen Grant, Estella Rogan, Carol Brunnock and Fiona Flood of Eureka Secondary School in Kells, Co Meath. Now more than 160 teams register each year, from all regions of the country.

The debates aim to engage students in tackling global issues that affect the lives of thousands of people in the developing world. The Concern Debates are open to all senior-cycle secondary students, from transition year to sixth year. Each team consists of four members and substitutes. Here are a few tips if you're taking part.

Research is crucial. Make sure that you have facts to back up your views. Judges will spot bluster - and, if the opposing team members have done their research, so will they.

Think about how you can logically construct your arguments. Both sides of the argument are important. Think about what the opposing team is likely to say, so that you can work out your case in advance.

Make sure you stick to the subject being debated.

During the debate, try to appear as if you are enjoying yourself. Don't be too serious. A smile will help you to relax.

Stand with two feet on the ground. Don't shift your weight and don't lean on the table or fidget. Stand up straight and use your hands as you would naturally when you're talking.

Make sure to project your voice. The best argument in the world will be worth nothing if the judges can't hear you. So direct your argument to them. Try not to look directly at the other team, but don't ignore them. Avoid turning your back to the audience or to the judges.

Confidence is everything. If you look confident your argument will seem more convincing. If a member of your team makes a mistake, don't react negatively. Instead, support what your team-mates are saying with nods or facial expressions. When you finish speaking, continue to look involved and interested in the debate.

Appearance can make a difference. Dress neatly and avoid distracting jewellery, such as bangles.

Practice makes perfect, even in debating.