Math and art might seem like completely different worlds - especially to the number-phobic. But where they intersect, we can find the fractal growth of a snowflake, the spiral seeds of a sunflower, and dazzling abstract designs born of patterns and randomness. Here are 65 math-inspired illustrations to meditate on as you colour, from the Sri Yantra (an ancient Hindu mandala of nine entwined triangles) to a page full of Penrose tiles (two shapes that can cover an infinite surface - but in a sequence that never perfectly repeats)! These Patterns of the Universe reveal their underlying logic as they are filled in, so colouring becomes an act of discovery. Bestselling author Alex Bellos and mathematical illustrator Edmund Harriss include friendly explanations of the math that add to the wonder. Plus, 13 bonus activities at the back of the book invite colourists to help create their own one-of-a-kind designs!