Sorting, processing and representing data

How can we make sense of national and global statistics involving very large numbers?

Is it the fastest swimmer, the fastest runner or the fastest cyclist who wins the Olympic Triathlon?

Looking at the 2012 Olympic Medal table, can you see how the data is organised? Could the results be presented differently to give another nation the top place?

This problem explores the range of events in a sports day and which ones are the most popular and attract the most entries.

Can you see who the gold medal winner is? What about the silver medal winner and the bronze medal winner?

Here is the start of a six-part challenge. Can you get to the end and crack the final message?

Substitution and Transposition all in one! How fiendish can these codes get?