problem
Favourite
Substitution cipher
Age
11 to 14
Challenge level
Find the frequency distribution for ordinary English, and use it to help you crack the code.
problem
Alternative record book
Age
14 to 18
Challenge level
In which Olympic event does a human travel fastest? Decide which events to include in your Alternative Record Book.
problem
Secret transmissions
Age
14 to 16
Challenge level
How can Agent X transmit data on a faulty line and be sure that her message will get through?
problem
Stadium sightline
Age
14 to 18
Challenge level
How would you design the tiering of seats in a stadium so that all spectators have a good view?
problem
Favourite
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?
problem
The fastest cyclist
Age
14 to 16
Challenge level
Andy is desperate to reach John o'Groats first. Can you devise a winning race plan?
problem
Favourite
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?