Start with a single shape. Repeat it in some way—translation, reflection over a line, rotation around a point—and you have created symmetry. Symmetry is a fundamental phenomenon in art, science, and nature that has been captured, described, and analyzed using mathematical concepts for a long time. Inspired by the geometric intuition of Bill Thurston and empowered by his own analytical skills, John Conway, with his coauthors, has developed a comprehensive mathematical theory of symmetry that allows the description and classification of symmetries in numerous geometric environments. This richly and compellingly illustrated book addresses the phenomenological, analytical, and mathematical aspects of symmetry on three levels that build on one another and will speak to interested lay people, artists, working mathematicians, and researchers.

A multifaceted biography of a brilliant mathematician and iconoclast A mathematician unlike any other, John Horton Conway (1937–2020) possessed a rock star’s charisma, a polymath’s promiscuous curiosity, and a sly sense of humor. Conway found fame as a barefoot professor at Cambridge, where he discovered the Conway groups in mathematical symmetry and the aptly named surreal numbers. He also invented the cult classic Game of Life, a cellular automaton that demonstrates how simplicity generates complexity—and provides an analogy for mathematics and the entire universe. Moving to Princeton in 1987, Conway used ropes, dice, pennies, coat hangers, and the occasional Slinky to illustrate his winning imagination and share his nerdish delights. Genius at Play tells the story of this ambassador-at-large for the beauties and joys of mathematics, lays bare Conway’s personal and professional idiosyncrasies, and offers an intimate look into the mind of one of the twentieth century’s most endearing and original intellectuals.

This engaging new Pip and Posy picture book features richly-detailed scenes, a conversational, friendly text and Axel Scheffler's characteristic touches of humour. The 'Can you find these things?' panel along the bottom of each page adds an 'I-spy' game element for extra fun - an ideal book for parent and child to share.

These six titles each contain a sixteen-page story, some picture puzzles and a 'spot the difference' spread designed to engage the child's interest and confidence in reading. The vocabulary used is taken from the National Curriculum word list plus key words from the TTE Learning programme. These words are repeated both within the stories and across the range for maximum benefit to the child.

Follow a busy and exciting day in the lives of Tessa the Teacher, Fred the Firefighter, Vicky the Vet, Daisy the Doctor, Frank the Farmer and Sam the Chef.

A look-and-say nature book for inquisitive little ones