El espacio exterior

Explore outer space and learn about stars, galaxies, planets, asteroids and how these bodies are all related to one another. Featured in this book are photographs from outer space and related vocabulary.

Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!

Rabbit burrows play an important part in the life of a rabbit. A burrow provides a place to live, a place to raise baby rabbits, and a place to stay safe from predators. This volume, which was written to support elementary science curricula, examines the role a burrow plays in the survival of a warren, and how that in turn helps rabbits contribute to ecosystems around the world. The text’s age-appropriate, science-rich content focuses on rabbit behavior and encourages readers to draw connections between what they learn in science class and what they see outside. This text is complemented by ...

As the COVID-19 pandemic has spread around the world, it's left many adults and children searching for answers about how they can stay safe. By focusing on facts presented in a relatable way rather than fear, this illustrated guide to health and safety gives children the tools they need to understand what's happening in the world and to discover how they can become a virus warrior. Facts about coronaviruses are paired with essential information about social distancing, personal hygiene, and the things we can control in uncertain times, creating a learning experience designed to reduce...

A finales de 1938, Manuel y su madre enferma intentan alejarse del hambre, el frío y los bombardeos que sacuden la ciudad de Barcelona. En su huida hacia el exilio tendrán que recorrer un largo camino salpicado de peligros y sinsabores. Manuel, solo y al límite de su resistencia física, conseguirá sobrevivir gracias a la amistad y generosidad de héroes anónimos que se cruzan en su camino.