Los sólidos (Solids)

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.

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.

Invite readers along on the preparations for a soccer tournament! With informational, Spanish-translated text, vibrant photos and charts, children are engaged from cover to cover while utilizing mathematical skills to increase understanding of all aspects of soccer, including sportsmanship and tournaments.

Readers will be amazed to discover that every time they climb onto bicycles and ride like the wind, they are defying gravity! This book explains the physics and history behind bicycles, skateboards, and surfboards. Readers learn what happens from the simplest movement of rolling forward to more complex tricks and stunts of jumping and spinning. Readers will never look at bikes, skateboards or surfboards the same way again.

Through innovation and imagination, savvy entrepreneur Richard King became a towering figure in the Texas cattle industry. The King Ranch, which continues to flourish today, is a symbol of his enduring legacy.

Las 15 B+leccionesB; magistrales que contiene este libro revolucionaron, ya en los anos sesenta, los fundamentos de la pedagogia de la musica. Por entonces, el prestigioso compositor y director de orquesta Leonard Bernstein (1918-1990) presentaba en television sus famosos B+Conciertos para jovenesB; , y explicaba de una forma amena y didactica esos conceptos y puntos considerados aburridos o dificiles en la musica (el solfeo, el contrapunto, los acordes, que es un concierto, la musica sinfonica, como suenan los diferentes instrumentos, etc.). En esta cuidada seleccion de dichos conciertos...

Arvid Falk, un joven idealista y generoso, deja su empleo para dedicarse a la literatura militante. Al cabo de muchas experiencias amargas, vuelve a su vida de empleado y, ya sin ilusiones, dedica sus horas libres a la numismática. A la figura de Arvid se contrapone la de su hermano, Carl Nicolaus, mezquino e hipócrita aunque con un fondo de humanidad verdadera. Una serie extraordinariamente incisiva de retratos de personajes y ambientes de la sociedad sueca de finales del siglo XIX completan el impresionante edificio narrativo de la novela: figuras de la vida bohemia, periodistas sin...

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.