Birds, Bees and Burgers: Puzzling Geometry from EnigMaths (Paperback)
Problems are presented simply and colorfully, and solutions are well expounded and clear. The reader will enjoy the challenge, and the "aha" moment of understanding any solution that they did not come to themselves. Great fun—and enlightening, too!
Paulo Ferro is a mathematics teacher and author in Portugal, and tweets and blogs as EnigMaths.