Laws are decided on by a combination of the Scottish Parliament and the Parliament in Westminster. Proposals for new laws are raised, debated and voted upon by MPs or MSPs. Those that are approved become law. Some aspects of Scots law are based on principles laid down many years ago and have been developed by the legal decisions that judges come to in specific cases. In this way, judges too contribute to law making.
Students could generate a quiz on what is legal at what age. For example, 'at what age can you buy alcohol?' Students should try to come up with at least ten quiz questions and use their quiz to test each other.