Frederick Douglass: Líder del movimiento abolicionista (Frederick Douglass)

Learn how zookeepers at the National Zoo keep the animals healthy and happy. This Spanish book features a hands-on STEAM challenge and uses real-world examples to give insight into how the engineering design process is used to solve problems.

With a direct tone and based on testimony, questions, real emotions, and inquiries, this book advises adolescent young men on several different topics: muscles, sports, women, acne, humor, the Internet, music, jokes, money, risks, and protection, among others. A book filled with information, practical ideas, modern tips, and illustrations, it has the added benefit of being endorsed by professionals specializing in each of the subjects it covers. Con un tono directo y sin prejuicio, este libro surge de testimonios, preguntas, emociones e inquietudes reales, intentando orientar y dar respuesta...

Readers won't have to disassemble their favorite toys to discover what makes them work. This book explores electric, magnetic, and motion-powered toys from design to function. It introduces readers to the six simple machines and explains how they use force and motion to do work. Not every toy is a technological marvel. Readers learn about time-honored favorites including the rocking horse, Slinky, and rattles.

This informative, Spanish-translated book teaches early readers about the importance of government and how it impacts our lives. Readers will learn about taxes, the three branches of government, voting, and more. Engaging, primary source documents and images keep students reading as they build their literacy skills and social studies content knowledge.