Have you ever drawn a picture of your family or made a castle with blocks? That picture or castle is a mental representation! It's like a way for your brain to imagine things even when they're not right in front of you.
Imagine you're playing a game of Tic-Tac-Toe in your head - you can visualize the X's and O's on the board even though they aren't really there. That's another example of mental representation!
Our brains use mental representation to help us remember things, solve problems, and make decisions. It's like an imaginary tool that helps our brains think and imagine things.