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.
Tell your friends that you have a strange calculator that turns
numbers backwards. Secretly enter 9+ then enter 12 and show a
friend. Press = and up comes 21.
Try another one: Secretly enter 36+ then enter 15 and show a
friend. Press = and up comes 51.
What secret number do you have to enter to make this large
number turn around: 141 414?