El ferrocarril transcontinental (The Transcontinental Railroad)

Christopher Columbus most likely wasn’t the person to discover the Americas. He wasn’t even the first European to do so! Despite that, his three trips to the Western Hemisphere led to many more European explorers heading in that direction. In this volume, readers familiar with Columbus’s travels on the Nina, Pinta, and Santa Maria can learn who Columbus was beyond his travels. Supported by full-color and historic images, interesting main content turns what readers think they know about the life of Columbus on its head while expounding on an important period in the history of the world.

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.

Now in Spanish -- make any moment mindful from morning to night with 5 categories of sturdy activity cards, designed to fit into each part of the day. Full-color illustrations, easy-to-follow instructions and an 8-page instruction booklet make this one-of-a-kind mindfulness deck an inclusive tool for nurturing inner peace and strength.

Describes the U.S. Navy, including their vehicles such as jets, aircraft carriers, and submarines, their weapons, and some of the different jobs that members perform in the Navy. Written in English and Spanish.