How do you know if your set of dominoes is complete?
How many ways can you find to do up all four buttons on my coat? How about if I had five buttons? Six ...?
I've made some cubes and some cubes with holes in. This challenge invites you to explore the difference in the number of small cubes I've used. Can you see any patterns?
In how many different ways can you break up a stick of 7 interlocking cubes? Now try with a stick of 8 cubes and a stick of 6 cubes.