Copyright © University of Cambridge. All rights reserved.

## 'Up and Down Staircases' printed from http://nrich.maths.org/

How many blocks are needed for a $3$ step up-and-down
staircase?

Try making a table of the number of blocks needed for each
numbers of steps.

Can you rearrange the blocks for each staircase to make a square
pattern? How might this help?

**If you can see this message Flash may not be working in your browser**
**Please see http://nrich.maths.org/techhelp/#flash to enable it.**