A truth value is like a label that we put on a sentence or statement to say whether it is true or false. It's kind of like when we put stickers on things to show what they are or how we feel about them.
So let's say we have a statement like "the sky is blue." We can put a truth value on this statement by saying it is true. But if we have a statement like "the moon is made of cheese," we can put a truth value on this by saying it is false.
It's important to remember that truth values are not opinions or feelings. They are based on facts and evidence. So even if someone really wants to believe that the moon is made of cheese, the truth value of that statement is still false because we have evidence that shows the moon is not made of cheese.
Overall, truth values help us understand whether something is true or false, based on available evidence and facts.