Think of a side like a line on a piece of paper. If you draw a square, it has four lines, or sides. Each side is like a wall that helps make the shape. Now, imagine a toy block. Each flat part you touch is a side. These sides make the block look like a box.
When you look at a book, the cover is one side, and the back is another side. The sides help hold all the pages together, just like how the sides of a house hold the roof.
In a game of hide and seek, if you hide behind a tree, you’re on one side of the tree, and your friend looking for you is on the other side. Sides help us know where things are.
Even when you eat a sandwich, you have two sides: the top bread and the bottom bread. They keep all the yummy stuff inside.
So, a side is like a part of something that helps make it whole, like a piece of a puzzle or a slice of cake that fits with other slices to make a whole cake.