Imagine you have a piece of string. You can tie it into all sorts of different shapes and sizes, right? A knot in math is kind of like that. But instead of just randomly tying string together, mathematicians use special rules to make sure they tie the string in a particular way.
The idea of knots in math is all about studying the different ways you can tie a piece of string so that it looks different from any other knot. Even if two knots look really similar, if they have different crossings or twists, then they're considered different knots.
Mathematicians use knots to help them understand lots of different things, like the shape of DNA molecules, the way proteins fold up, and even how the universe might be structured. They also study knots just for fun, trying to see if there are any patterns or rules that tie all knots together.
It might sound complicated, but just like with tying your shoelaces, all you need is the right technique and a little practice to get the hang of it. And who knows, maybe one day you'll be the one discovering the mysteries of the knot universe!