Explain the basic job of a court: to listen fairly to both sides of a disagreement and decide a fair solution.
Sometimes people disagree about whether a law was broken, or about how to fairly solve a problem between two people. A court is the place where a judge listens carefully to both sides before deciding what is fair.
A key rule of a court is that BOTH sides get to tell their story. The judge does not just believe the first person who talks -- everyone gets a fair chance to be heard before a decision is made.
Mastery looks like: They can explain that a court's job is to hear both sides fairly before a judge decides a fair solution.
Common stumbles: Assuming whoever speaks first or loudest should automatically be believed, instead of understanding that both sides must be heard.