With its lively, creative approach, this is a unique and highly memorable one-stop guide to the building blocks of mathematics. Meet bubbly Zero, who can dissolve you to nothing; all-action Units, who just love to measure; greedy-guts Multiply, a big guy who hoards numbers together; and mysterious Pi, who goes on and on and on... to Infinity! Plus tonnes of practical advice to help every child unravel the rules and regulations of mathematics.