This unique book gathers a collection of mathematical problems primarily aimed at upper elementary school students, but challenging at any age. These problems were carefully picked from the legendary Leningrad Mathematical Olympiads and were presented to the city’s Grade Five students between 1979 – the earliest year for which relevant records could be retrieved – and 1992, when the former Soviet Union was dissolved.The respective chapters reflect the famous four-step approach to problem solving developed by the great Hungarian mathematics educator Gyorgy Pólya. In Chapter One, the Grade Five Competition problems from the Leningrad Mathematical Olympiads from 1979 to 1992 are presented in chronological order. In Chapter Two, the 83 problems are loosely divided into 26 sets of three or four related problems, and an example is provided for each one. Chapter Three provides full solutions to all problems, while Chapter Four offers generalizations of the problems and discusses their further investigation.This book can be used by any keen student at the upper elementary school level. Teachers and organizers of outreach activities such as mathematical circles will also find this book useful. But the primary value of the book lies in the problems themselves, which were crafted by experts; therefore, anyone interested in problem solving will find this book a welcome addition to their library. weiterlesen