Think of a Number

After the very successful television series of the same name. It contains jokes, puzzles, information about numbers: where they came from, what early mathematicians discovered, how big really big numbers can be, as well as things to make you think. What makes an arrow fly? What makes a boomerang come back? The book is very entertaining, very readable and strongly conveys Johnny Ball's enthusiasm and sense of fun. It's a book to dip into and suitable for top juniors upwards. A slight criticism - there are so many separate bits and pieces that one often seems to be left 'dangling' with nowhere to go. I'd like to see a follow-up.