Can’t remember the difference between a prime number and a square number? Forgotten how many sides on a pentagon (5), heptagon (7), or nonagon (9)? Then you need DK’s new Math Dictionary! Inside, you’ll find more than 300 entries on the words, phrases, and concepts used by grade-school students in their math classes and in their lives outside school.
Carol Vorderman is Britain’s leading female television host. For twenty-three years she has been known as the “Numbers Queen” on the hit quiz show Countdown, where she performs mental arithmetic at lightning speed. She has also presented science and technology… More about Carol Vorderman