What are edges?

Edges are the lines that show where one thing ends and another begins.

Imagine you're drawing a picture of your favorite toy, maybe a robot or a dinosaur. When you draw around it, the edges are like the outside lines of the drawing. They help you see where the robot stops and the background starts, or where the dinosaur’s tail ends and its body begins.

Think about playing with building blocks. Each block has sides, those are its edges. When you put two blocks together, their edges meet. If you look at a tower of blocks from the side, you can see all the edges that make it stand up tall.

Even when you're not drawing or building, edges are everywhere! A table has edges, where the top meets the legs. A cookie has edges, where the soft middle meets the hard crust. You might even feel edges when you touch something with your hands, like the corner of a book.

Edges help us understand shapes and spaces, just like lines in a picture or blocks stacked high!