![Mixing Lemonade](/sites/default/files/styles/medium/public/thumbnails/content-id-6870-icon.png?itok=aV_t_VbL)
![Olympic Measures](/sites/default/files/styles/medium/public/thumbnails/content-id-8318-icon.png?itok=K-j1ORoN)
problem
Olympic Measures
These Olympic quantities have been jumbled up! Can you put them back together again?
![Fractions Rectangle](/sites/default/files/styles/medium/public/thumbnails/content-id-13081-icon.gif?itok=JQcThgju)
problem
Fractions Rectangle
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?
![Mixing Paints](/sites/default/files/styles/medium/public/thumbnails/content-id-4793-icon.png?itok=S18g7PDu)
![All in a jumble](/sites/default/files/styles/medium/public/thumbnails/content-id-5994-icon.png?itok=sVnQZK_y)
problem
All in a jumble
My measurements have got all jumbled up! Swap them around and see
if you can find a combination where every measurement is valid.
![Thousands and Millions](/sites/default/files/styles/medium/public/thumbnails/content-id-6046-icon.jpg?itok=ZEocVOwg)
![Triathlon and Fitness](/sites/default/files/styles/medium/public/thumbnails/content-id-7586-icon.png?itok=ZumBOT28)
problem
Triathlon and Fitness
The triathlon is a physically gruelling challenge. Can you work out which athlete burnt the most calories?
![Speeding boats](/sites/default/files/styles/medium/public/thumbnails/content-id-6494-icon.png?itok=zxRzGJtN)
problem
Speeding boats
Two boats travel up and down a lake. Can you picture where they will cross if you know how fast each boat is travelling?
![Speed-time problems at the Olympics](/sites/default/files/styles/medium/public/thumbnails/content-id-7322-icon.png?itok=A6u897LM)
problem
Speed-time problems at the Olympics
Have you ever wondered what it would be like to race against Usain Bolt?
![Nutrition and Cycling](/sites/default/files/styles/medium/public/thumbnails/content-id-7571-icon.png?itok=7GvnTgar)
problem
Nutrition and Cycling
Andy wants to cycle from Land's End to John o'Groats. Will he be able to eat enough to keep him going?
![The Legacy](/sites/default/files/styles/medium/public/thumbnails/content-id-5893-icon.jpg?itok=RcKTAB2G)
problem
The Legacy
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?
![Mixing More Paints](/sites/default/files/styles/medium/public/thumbnails/content-id-4794-icon.png?itok=lFUr_0w-)
![Dating made Easier](/sites/default/files/styles/medium/public/thumbnails/content-id-5636-icon.png?itok=KlYOKzzk)
problem
Dating made Easier
If a sum invested gains 10% each year how long before it has
doubled its value?
![Areas and Ratios](/sites/default/files/styles/medium/public/thumbnails/content-00-04-15plus2-icon.png?itok=KCcw922_)
problem
Areas and Ratios
Do you have enough information to work out the area of the shaded quadrilateral?
Image
![Ratio STEM footer Ratio STEM footer](/sites/default/files/styles/large/public/thumbnails/content-id-13468-STEMlogo.png?itok=5_0dmbx3)
You may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.