Using a grid can help you understand scale factors. It makes it easier to see how much a shape grows when you enlarge it. Here is a rectangle. It has a width of 2 squares and a length of 4 squares.

In this KS2 maths article you’ll learn what a scale factor is and how to use them to describe how a shape has been made larger or smaller. We also have a KS2 maths quiz and lots of examples.