Olympic Measures
Age 11 to 14
Challenge Level
These Olympic quantities have been jumbled up! Can you put them back together again?
All in a Jumble
Age 11 to 14
Challenge Level
My measurements have got all jumbled up! Swap them around and see if you can find a combination where every measurement is valid.
Triathlon and Fitness
Age 11 to 14
Challenge Level
The triathlon is a physically gruelling challenge. Can you work out which athlete burnt the most calories?
Mixing Paints
Age 11 to 14
Challenge Level
Can you work out how to produce different shades of pink paint?
Mixing More Paints
Age 14 to 16
Challenge Level
Can you find an efficent way to mix paints in any ratio?
Nutrition and Cycling
Age 14 to 16
Challenge Level
Andy wants to cycle from Land's End to John o'Groats. Will he be able to eat enough to keep him going?
Speed-time Problems at the Olympics
Age 14 to 16
Challenge Level
Have you ever wondered what it would be like to race against Usain Bolt?
Speeding Boats
Age 14 to 16
Challenge Level
Two boats travel up and down a lake. Can you picture where they will cross if you know how fast each boat is travelling?
The Legacy
Age 14 to 16
Challenge Level
Your school has been left a million pounds in the will of an ex- pupil. What model of investment and spending would you use in order to ensure the best return on the money?
Dating Made Easier
Age 14 to 16
Challenge Level
If a sum invested gains 10% each year how long before it has doubled its value?
Areas and Ratios
Age 16 to 18
Challenge Level
Do you have enough information to work out the area of the shaded quadrilateral?
Fractions Rectangle
Age 11 to 14
Challenge Level
The large rectangle is divided into a series of smaller quadrilaterals and triangles. Can you untangle what fractional part is represented by each of the ten numbered shapes?
Ratio, Proportion and Rates of Change - Short Problems
Age 11 to 16
A collection of short problems on ratio, proportion and rates of change.
You may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.
NRICH is part of the family of activities in the Millennium Mathematics Project.