The Professor’s Puzzle is designed as a handbook for new and aspiring professors to help them transition from the independent research of their doctoral progr

Nancy and her friends are on an epic quest to discover the identity of a treacherous Greek scholar in this fifteenth book of the Nancy Drew Diaries, a fresh app

School maths is not the interesting part. The real fun is elsewhere. Like a magpie, Ian Stewart has collected the most enlightening, entertaining and vexing 'cu

In Volume 1 of the large print edition of Professor Puzzleworth's Number Searches, the good professor has gathered together 100 of his favorite mind-boggling nu