Book excerpt: Make maths as easy as 1 2 3 with Carol VordermanDoes your child find maths tricky? Are they stuck on their square roots or puzzled by prime numbers? Help is at instant hand with Carol Vorderman's essential maths explainer.It's packed with hundreds of mathematical entries covering words, phrases, shapes, measurements, concepts, calculations and much more, making everything easy to understand. Perfect for children of all ages up to the start of secondary school (and for mums and dads who need a hand in helping out with maths homework!)