All about Maths helps make maths magically simple, from pi, the amazing number that unlocks the secret of circles and spheres, to perfect proportions - did you know Leonardo da Vinci figured out that a person's ear is one-third the length of their face? Along the way, you'll meet some of the most brilliant mathematical thinkers from history who have used numbers to make sense of the world. Discover how Pythagorus came upon his famous theorem, and how Galileo the Great became the father of clocks.