Chapter 1: Think of a number Chapter 2: Number systems Chapter 3: The beginnings of geometry Chapter 4: The mathematics of music Chapter 5: Going around in circles - the path to pi Chapter 6: Zero - the nothing that was something Chapter 7: Algebra - solving the unknown Chapter 8: Putting things in perspective Chapter 9: Probability - what are the chances? Chapter 10: Logarithms - calculating made easy Chapter 11: Geometry gets co-ordinated Chapter 12: Calculus - a scientific revolution Chapter 13: Picture a number - visual data Chapter 14: Number theory Chapter 15: The problem of infinity Chapter 16: Topology - the transformation of shapes Chapter 17: The birth of computer science Chapter 18: Game theory Chapter 19: Chaos theory Chapter 20: Conclusion: Does mathematics describe reality?.