We start with a single tree; 1. As we turn the page, we are presented with a sum doubling the number on the page before it: 1+1 = 2; 2+2 = 4; 4+4 = 8. In this way, we reach a million (actually 1,048,576) within 40 pages. Each sum is brought to life with a simple graphic illustration in the distinctive style of Sven Volker. The dots form the back of a ladybird, the bubbles in a cup of soda and the water in a swimming pool. The final page opens up to a magnificent 8 page gatefold to accommodate the final two big numbers. Gloriously simple in its concept and execution, this is a book that will bring mathematics alive to parents as well as children.