Harriet Tubman

Take a journey into the wild world of reptiles and amphibians! Readers will learn about crocodiles, lizards, snakes, tortoises, and salamanders. Featuring a glossary, index, colorful images and charts, intriguing facts, and clear, informative text, readers will be sure to be enthralled as they move through this engaging, Spanish-translated book.

In this biographical book, young readers will learn about the brave life of Harriet Tubman. Readers will discover how Tubman bravely escaped from her life as a slave to cross the Mason-Dixon line into freedom and how she helped hundreds of other slaves into freedom through the Underground Railroad with the help of abolitionists. The vivid images, stunning facts, and supportive text work in conjunction with the helpful glossary, index, and timeline of Tubman's life to give readers an engaging experience as they move from cover to cover. This book has been translated into Spanish.

Read Along or Enhanced eBook: Discover the world of mammals in this delightful nonfiction title! Readers will learn all about different mammals--from primates to marsupials, and rabbits to whales, even omnivores and herbivores. Featuring vivid photos and charts, clear text, and stimulating facts, this Spanish-translated book will have children eager to learn all they can about mammals!

Introduces the holiday Cinco de Mayo and describes how it is celebrated in Mexico and in the United States.

Where is your brain exactly? What does it do? Use your brain to read this engaging, Spanish-translated title and learn all about it!

Vicky, una joven ejecutiva bancaria de Santiago de Compostela, vive felizmente con su dudoso marido y triunfos en su vida profesional. Un día recibe una señal al descubrir una infidelidad que palpa sin querer y ve que su vida personal no iba por el sendero correcto y cambia radicalmente su adorada rutina. Entonces expulsa al ibicenco de su camino, aunque lo ve todos los días en su trabajo. Entre otras medidas, decide hacer el viaje que tenían programado y opta ir acompañada por otra persona. Así inicia un nuevo peregrinaje que jamás había pensado y no tiene en cuenta la orientación...

Esta cuarta edición expone los fundamentos de las señales y sistemas discretos en el tiempo y procesamiento digital de señales. Este texto es adecuado para estudiantes de Ingeniería eléctrica, ingeniería informática y Ciencia de la computación.