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.
Susie had a large bowl of cherries.
They were all in pairs.
Susie took out a pair, she ate one cherry and put the other one back. She took out another pair and did the same again.
Then she helped herself to one of the single cherries in the bowl.
Susie continued helping herself to the cherries in this way (pair, pair, single - pair, pair, single - ...)
After she had done this lots of times, there were just $14$ single cherries left.
How many cherries had there been in the bowl to start with?