An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
Choose any three by three square of dates on a calendar page...
Investigate how you can work out what day of the week your birthday will be on next year, and the year after...
A tile is fixed to a wall and then painted with four different colours, one for each quarter. One way of doing this is
How many other ways can the tile be painted?
If you liked this problem, here is an NRICH problem which is based on similar mathematical ideas
This problem is taken from the UKMT Mathematical Challenges.