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.

Teach students about the years of change and reform between World War I and World War II. With this Spanish-translated book, readers will learn about events such as the Harlem Renaissance, suffrage, the stock market crash on "Black Tuesday," and the Great Depression. Primary source documents and images, and other engaging features, aid students in understanding the social studies content.

The moon people use a cloud bridge to travel to the Earth, a messy but beautiful world of incredible variety that becomes their new home.

Dentro de una atmósfera inquietante, una adolescente madura en torno a los días muertos del verano que pasaba en una vieka casona de familia.

The world's myths are filled with characters, creatures, and stories that have fascinated people for thousands of years. This series mixes dramatic retellings and non-fiction information to give a full picture of a culture's myths. This book explores the gods, goddesses, heroes, villains, tricksters, and quests that make Egyptian myths and legends so compelling. Fully translated Spanish text.