Desafíos matemáticos

Sesenta autores, desde catedráticos de universidad hasta estudiantes de Secundaria y Bachillerato, nos presentan los cuarenta desafíos que la Real Sociedad Matemática Española propuso con motivo de su centenario.Son cuarenta estimulantes retos que avivan el ingenio. Enfrentándose a ellos, el lector se sentirá un auténtico investigador matemático.Pero no hay que asustarse. No es necesario saber muchas matemáticas. La herramienta esencial para resolver los desafíos es pensar ordenadamente.

This beautifully illustrated book will begin to give the reader a glimpse into what Heaven will be like and what God has prepared for those of us who love Him and believe in His Son, Jesus! "What is Heaven Like, Mimi?" is based on the true story of Joy Brandt, born in 1929, and her near-death experience when she was 9 years old. Heaven is a real place and there are Biblical scriptures throughout the book to refer to. "I go to prepare a place for you, I will come again and receive you unto Myself; that where I am, there you may be also." John 14:3

Tommy Fuller and his family help a runaway slave family follow the stars in the Little Bear constellation to freedom.

Thomas Edison is considered by many to be one of the greatest inventors of all time. His creations changed the world, but there was more to his life than just his inventions. Readers of this engaging volume will learn all about the man behind the innovations. This fascinating biography introduces important subjects and encourages a further interest in history. Concise and accessible text paired with vibrant photographs is sure to captivate audiences of many ages and levels.

When Vladan Borojevic googles the name of his father Nedeljko, a former officer in the Yugoslav People's Army, supposedly killed in the civil war after the decay of Yugoslavia, he unexpectedly discovers a dark family secret which recollects the events of 1991. Seventeen years later, Vladan's discovery that he is the son of a fugitive war criminal sends him off on a journey around the Balkans to find his elusive father. The story of the Borojevic family strings and juxtaposes images of the Balkans past and present, but mainly deals with the tragic fates of people who managed to avoid the...