Take Three from Five
Age 11 to 16
Challenge Level
Caroline and James pick sets of five numbers. Charlie chooses three of them that add together to make a multiple of three. Can they stop him?
Number Rules - OK
Age 14 to 16
Challenge Level
Can you produce convincing arguments that a selection of statements about numbers are true?
Always Perfect
Age 14 to 18
Challenge Level
Show that if you add 1 to the product of four consecutive numbers the answer is ALWAYS a perfect square.
Maths Makes A Difference
Age 14 to 18
Recording and links to the resources used during the MMAD webinar on 2nd February 2021.
Curve Hunter
Age 14 to 18
Challenge Level
This problem challenges you to sketch curves with different properties.
Exploring Cubic Functions
Age 14 to 18
Challenge Level
Quadratic graphs are very familiar, but what patterns can you explore with cubics?
Curve Fitter
Age 14 to 18
Challenge Level
This problem challenges you to find cubic equations which satisfy different conditions.
The Farmers' Field Boundary
Age 11 to 14
Challenge Level
The farmers want to redraw their field boundary but keep the area the same. Can you advise them?
The Better Choice
Age 14 to 16
Challenge Level
Here are two games you can play. Which offers the better chance of winning?
NRICH is part of the family of activities in the Millennium Mathematics Project.