These squares have been made from Cuisenaire rods. Can you describe
the pattern? What would the next square look like?
Cut differently-sized square corners from a square piece of paper
to make boxes without lids. Do they all have the same volume?
Can you use this information to work out Charlie's house number?
How many blocks are needed for a $3$ step up-and-down
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?