Lo que el Frente Polisario esconde

¿Crees que los fantasmas existen? ¡Viaja al este de Estados Unidos y deci ́delo tu ́! Recorre el campo de batalla de Gettysburg, visita la histo ́rica Casa Blanca y pase ́ate por la casa de Lizzie Borden. ¡Te espera una aventura espeluznante!

Today’s computers come in all shapes and sizes, but not many people actually know how they’re made. The journey from circuits and wires to a ready-to-use computer is a fascinating exploration of science and engineering. Readers get a look inside their laptops, desktops, and even their tablets as they’re shown step-by-step how these electronic marvels are assembled. Readers will love knowing what goes on inside their own machines, and color photographs and simple instructions will show them how they can build their own computer!

The Mi Mini Biografia series are Spanish language biographies for the earliest readers. This book examines the life of Eleanor Roosevelt in a simple, age-appropriate way that will help children develop word recognition and reading skills. Includes a timeline and other informative backmatter.

Have you ever seen a skyscraper that is shaped like an elephant? How about one that looks like waves? Students will learn how to measure area while engaged in reading about the world's coolest skyscrapers! This Spanish book uses real-world examples to teach math concepts, and incorporates nonfiction reading to increase vocabulary and comprehension skills. The practice problems, graphs, and sidebars provide many opportunities for students to practice their developing math skills, and apply what they've learned to their daily lives. Essential text features like a glossary, index, and table of...