El porque de las cosas? / The Why of Things

Mars is perhaps the most thrilling planet these days. With rovers exploring its surface and manned missions in the works, people are wondering if Mars is our next home! In this highinterest book, readers will learn more about Earth's neighbor, including what its climate and surface are like, why it's called the Red Planet, and about the recent discovery of water on its surface. They'll learn all this while solving "Your Mission" math problems that complement and support the text. This motivating volume is an engaging way to explore key aspects of science and math curricula.

Introduces the concept of heat, how it's created, how it affects materials around it, and how heat is used.

Spanish Language Discover Series Books for Babies & Toddlers: Heavy Equipment Get ready for some rough and tumble trucks! In this Discover Series title, 28 tractors, excavators, forklifts and more are featured in big, colorful photographs on white backgrounds. Each page features a photograph of the truck with a simple title beneath. Used as a jumpstart for interaction, Discover Series Picture Books are a great way to introduce new images, words, and concepts to kids. In this Xist Kids Spanish Edition, Spanish text brings the story to new audiences. This book is in Spanish only. There is no...

En esta novela épica, Ken Follett transportará al lector a través de una Europa en ruinas, quebrada de nuevo por las guerras y los conflictos ideológicos. Los hijos de las cinco familias, protagonistas de "La caída de los gigantes", forjarán su destino en los años turbulentos de la Segunda Guerra Mundial, la guerra civil española, el bombardeo de Pearl Harbor y la era de las bombas atómicas americanas y soviéticas