This Book Thinks You're a Maths Genius explores seven key areas of maths: geometry, space and volume, statistics, numbers and number patterns, codes and ciphers and the concept of infinity. Each spread centres on an open-ended question that introduces a key mathematical concept and suggests activities that engage the child in a fun and entertaining way. Activities include predicting the trajectory of a Malteser; building loo roll skyscrapers; mind-reading magic tricks; devising your own spy code; and working out the physical correlations between your dad and Usain Bolt. The end of the book includes a section of paper-based crafts including the kit to make a cardboard football and a data log for family quirks.