¡Sin resolver! Lugares misteriosos

What does this Spanish-translated book, a table, and your big toe have in common? They are all solids! A solid keeps its shape and always has the same volume. Read this Spanish-translated book to learn about solids and how they are different from liquids and gases.

From Stonehenge to the Bermuda Triangle, there are many places on Earth that remain a mystery to scientists! Readers will discover these curious places--and more!--as they move through this fascinating, Spanish-translated nonfiction title. This mysterious book features detailed images, informational text, and stimulating facts and theories in conjunction with upper-level features, such as chapter format, a glossary of terms, and an index.

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther.

Presents a line-by-line explanation of the entire United States Constitution, in English and Spanish. Provides a Spanish translation of the Constitution, historical context and student exercises that approximate the decisions made by the Constitution's authors. Written at the fifth grade level.

Los juegos, los maetriales y los ejercicios que se proponen en el libro están destinados a promover el desarrollo de la actividad matemática y de toda la actividad intelectual que existe detrás de ella (clasificación, seriación, simbolización...) entre los más pequeños. Cada uan de estas propuestas tiene un sinificado y viene descrita con detalle del material material necesario, instrucciones de realización, organización del aula, etc.

Learn all about the amazing things your muscular system and skeleton do and how to keep them healthy and strong! With vivid images and clear, informational text in conjunction with supportive diagrams, this Spanish-translated nonfiction title introduces readers to basic biological ideas and vocabulary.

Describes the physical characteristics of spiders, different species, the webs they build, how they hunt for food, reproduction, and more.