### Babylon Numbers

Can you make a hypothesis to explain these ancient numbers?

### Ishango Bone

Can you decode the mysterious markings on this ancient bone tool?

### Cuboid Challenge

What's the largest volume of box you can make from a square of paper?

# Arithmagons

##### Age 14 to 16 Challenge Level:

How does the sum of the numbers at the edges relate to the sum of the numbers at the vertices?

It might help to label the numbers at the vertices $A$, $B$ and $C$ and then express the edge numbers in terms of $A$, $B$ and $C$.