Alex Through the Looking-Glass
How Numbers Reflect Life and Life Reflects Numbers
Alex Bellos, author of Snowflake Seashell Star, takes the reader on a tour of his favourite mathematical concepts to reveal the hidden numbers that underpin our everyday lives. In the course of his travels he explores the Ordnance Survey's obsession with trigonometry, explains why rollercoasters are a monument to Newton's innovations, ponders why we have superstitions about certain numbers, delves into the mysteries of hyperboloids and meets an anonymous member of a secret mathematical sect.
Number Treasury 3
Investigations, Facts and Conjectures About More than 100 Number Families
Written as a resource for both teachers and students, this enlarged third edition of Number Treasury is designed to guide readers through the steps that will help them to think critically, to provide explanations and to formulate conjectures about different families of positive integers. Its 137 exercises and 28 'investigations', at three levels of difficulty, cover such intriguing topics as magic squares, palindromic numbers and twin primes. Detailed solutions are provided at the back of the book.