Centred Shapes are made by building up a pattern of dots in a certain shape. Explore how centred shapes can fit together, and see how many patterns you can find!
Find out about centred shapes here! You can watch a short video that shows, in pictures, how centred triangles are made up of a triangular number and a square number. Then, why not explore some of these suggested number relationships yourself?
Can you find any other relationships between different centred shapes, triangular numbers and square numbers? Can you draw diagrams to show why the relationship is true?
If you're up for a real challenge, have a go at drawing some pictures to prove these relationships between centred shape numbers and other numbers.