Sometimes a small, seemingly insignificant, variation in the specification of a problem makes a huge difference in how difficult it is to solve. This activity, like the The...

The twenty seven challenges contained in this booklet are designed to challenge and inspire students whilst helping them on their journey to becoming a ‘computational thinker’. The ideas contained in the booklet will also provide useful teacher stimulation when planning lessons.

Many of the challenges...

This activity shows how to accomplish a simple, but nevertheless seemingly impossible task -making a fair random choice by flipping a coin, between two people who don’t necessarily trust each other, and are connected only by a telephone. The resource begins with a detailed explanation of the activity and...

Many real-life situations can be modelled in the form of a network or “graph” of the kind used for colouring in the Poor Cartographer – Graph ...