El libro de las respuestas a todos los porques / The Answer book on all the Whys

There is growing concern over how we behave and interact online, from fighting, incivility, rudeness, and even criminal behaviors like cyberbullying, to simply adapting old forms of etiquette to a new landscape. This book, updated from an earlier resource, provides younger readers an introduction to this timely topic, a subject that they are both engaged in forming themselves as "digital natives," and one they also often require guidance in. It informs readers about the polite and productive use of social media networks and mobile platforms and discusses pressing issues of etiquette within...

Describes, in text and illustrations, the technological challenges involved in the design and construction of skyscrapers, oil rigs, nuclear reactors, and other complicated structures.

Introduces readers to amphibians and the concept of classes of animals. Simple text describes the common features and behaviors of amphibians as well as offering many examples of creatures in this group.

"Pterodactyls are one of the most fascinating ancient creatures. Now in Spanish, this carefully leveled text includes fascinating facts about these fancy flyers in an accessible format. Diagrams, age-appropriate critical thinking questions, and other features inspire visual learning and engagement."