These two group activities use mathematical reasoning - one is
numerical, one geometric.
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.
It might be easier to work from this picture of the top of the cake with all possible cuts marked:
You will find two copies of the cake top marked like this on this sheet.
What do all the numbers $0$ to $9$ add to? So what will the numbers on each of the three pieces add to?